| Write message using io.WriteCloser | Yes | No, see note 3 |
-Notes:
+Notes:
1. Large messages are fragmented in [Chrome's new WebSocket implementation](http://www.ietf.org/mail-archive/web/hybi/current/msg10503.html).
2. The application can get the type of a received data message by implementing
diff --git a/vendor/github.com/gorilla/websocket/client.go b/vendor/github.com/gorilla/websocket/client.go
index 43a87c753..2e32fd506 100644
--- a/vendor/github.com/gorilla/websocket/client.go
+++ b/vendor/github.com/gorilla/websocket/client.go
@@ -5,15 +5,15 @@
package websocket
import (
- "bufio"
"bytes"
+ "context"
"crypto/tls"
- "encoding/base64"
"errors"
"io"
"io/ioutil"
"net"
"net/http"
+ "net/http/httptrace"
"net/url"
"strings"
"time"
@@ -53,6 +53,10 @@ type Dialer struct {
// NetDial is nil, net.Dial is used.
NetDial func(network, addr string) (net.Conn, error)
+ // NetDialContext specifies the dial function for creating TCP connections. If
+ // NetDialContext is nil, net.DialContext is used.
+ NetDialContext func(ctx context.Context, network, addr string) (net.Conn, error)
+
// Proxy specifies a function to return a proxy for a given
// Request. If the function returns a non-nil error, the
// request is aborted with the provided error.
@@ -71,6 +75,17 @@ type Dialer struct {
// do not limit the size of the messages that can be sent or received.
ReadBufferSize, WriteBufferSize int
+ // WriteBufferPool is a pool of buffers for write operations. If the value
+ // is not set, then write buffers are allocated to the connection for the
+ // lifetime of the connection.
+ //
+ // A pool is most useful when the application has a modest volume of writes
+ // across a large number of connections.
+ //
+ // Applications should use a single pool for each unique value of
+ // WriteBufferSize.
+ WriteBufferPool BufferPool
+
// Subprotocols specifies the client's requested subprotocols.
Subprotocols []string
@@ -86,52 +101,13 @@ type Dialer struct {
Jar http.CookieJar
}
-var errMalformedURL = errors.New("malformed ws or wss URL")
-
-// parseURL parses the URL.
-//
-// This function is a replacement for the standard library url.Parse function.
-// In Go 1.4 and earlier, url.Parse loses information from the path.
-func parseURL(s string) (*url.URL, error) {
- // From the RFC:
- //
- // ws-URI = "ws:" "//" host [ ":" port ] path [ "?" query ]
- // wss-URI = "wss:" "//" host [ ":" port ] path [ "?" query ]
- var u url.URL
- switch {
- case strings.HasPrefix(s, "ws://"):
- u.Scheme = "ws"
- s = s[len("ws://"):]
- case strings.HasPrefix(s, "wss://"):
- u.Scheme = "wss"
- s = s[len("wss://"):]
- default:
- return nil, errMalformedURL
- }
-
- if i := strings.Index(s, "?"); i >= 0 {
- u.RawQuery = s[i+1:]
- s = s[:i]
- }
-
- if i := strings.Index(s, "/"); i >= 0 {
- u.Opaque = s[i:]
- s = s[:i]
- } else {
- u.Opaque = "/"
- }
-
- u.Host = s
-
- if strings.Contains(u.Host, "@") {
- // Don't bother parsing user information because user information is
- // not allowed in websocket URIs.
- return nil, errMalformedURL
- }
-
- return &u, nil
+// Dial creates a new client connection by calling DialContext with a background context.
+func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Response, error) {
+ return d.DialContext(context.Background(), urlStr, requestHeader)
}
+var errMalformedURL = errors.New("malformed ws or wss URL")
+
func hostPortNoPort(u *url.URL) (hostPort, hostNoPort string) {
hostPort = u.Host
hostNoPort = u.Host
@@ -150,26 +126,29 @@ func hostPortNoPort(u *url.URL) (hostPort, hostNoPort string) {
return hostPort, hostNoPort
}
-// DefaultDialer is a dialer with all fields set to the default zero values.
+// DefaultDialer is a dialer with all fields set to the default values.
var DefaultDialer = &Dialer{
- Proxy: http.ProxyFromEnvironment,
+ Proxy: http.ProxyFromEnvironment,
+ HandshakeTimeout: 45 * time.Second,
}
-// Dial creates a new client connection. Use requestHeader to specify the
+// nilDialer is dialer to use when receiver is nil.
+var nilDialer = *DefaultDialer
+
+// DialContext creates a new client connection. Use requestHeader to specify the
// origin (Origin), subprotocols (Sec-WebSocket-Protocol) and cookies (Cookie).
// Use the response.Header to get the selected subprotocol
// (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
//
+// The context will be used in the request and in the Dialer
+//
// If the WebSocket handshake fails, ErrBadHandshake is returned along with a
// non-nil *http.Response so that callers can handle redirects, authentication,
// etcetera. The response body may not contain the entire response and does not
// need to be closed by the application.
-func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Response, error) {
-
+func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader http.Header) (*Conn, *http.Response, error) {
if d == nil {
- d = &Dialer{
- Proxy: http.ProxyFromEnvironment,
- }
+ d = &nilDialer
}
challengeKey, err := generateChallengeKey()
@@ -177,7 +156,7 @@ func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Re
return nil, nil, err
}
- u, err := parseURL(urlStr)
+ u, err := url.Parse(urlStr)
if err != nil {
return nil, nil, err
}
@@ -205,6 +184,7 @@ func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Re
Header: make(http.Header),
Host: u.Host,
}
+ req = req.WithContext(ctx)
// Set the cookies present in the cookie jar of the dialer
if d.Jar != nil {
@@ -237,45 +217,83 @@ func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Re
k == "Sec-Websocket-Extensions" ||
(k == "Sec-Websocket-Protocol" && len(d.Subprotocols) > 0):
return nil, nil, errors.New("websocket: duplicate header not allowed: " + k)
+ case k == "Sec-Websocket-Protocol":
+ req.Header["Sec-WebSocket-Protocol"] = vs
default:
req.Header[k] = vs
}
}
if d.EnableCompression {
- req.Header.Set("Sec-Websocket-Extensions", "permessage-deflate; server_no_context_takeover; client_no_context_takeover")
+ req.Header["Sec-WebSocket-Extensions"] = []string{"permessage-deflate; server_no_context_takeover; client_no_context_takeover"}
+ }
+
+ if d.HandshakeTimeout != 0 {
+ var cancel func()
+ ctx, cancel = context.WithTimeout(ctx, d.HandshakeTimeout)
+ defer cancel()
+ }
+
+ // Get network dial function.
+ var netDial func(network, add string) (net.Conn, error)
+
+ if d.NetDialContext != nil {
+ netDial = func(network, addr string) (net.Conn, error) {
+ return d.NetDialContext(ctx, network, addr)
+ }
+ } else if d.NetDial != nil {
+ netDial = d.NetDial
+ } else {
+ netDialer := &net.Dialer{}
+ netDial = func(network, addr string) (net.Conn, error) {
+ return netDialer.DialContext(ctx, network, addr)
+ }
+ }
+
+ // If needed, wrap the dial function to set the connection deadline.
+ if deadline, ok := ctx.Deadline(); ok {
+ forwardDial := netDial
+ netDial = func(network, addr string) (net.Conn, error) {
+ c, err := forwardDial(network, addr)
+ if err != nil {
+ return nil, err
+ }
+ err = c.SetDeadline(deadline)
+ if err != nil {
+ c.Close()
+ return nil, err
+ }
+ return c, nil
+ }
+ }
+
+ // If needed, wrap the dial function to connect through a proxy.
+ if d.Proxy != nil {
+ proxyURL, err := d.Proxy(req)
+ if err != nil {
+ return nil, nil, err
+ }
+ if proxyURL != nil {
+ dialer, err := proxy_FromURL(proxyURL, netDialerFunc(netDial))
+ if err != nil {
+ return nil, nil, err
+ }
+ netDial = dialer.Dial
+ }
}
hostPort, hostNoPort := hostPortNoPort(u)
-
- var proxyURL *url.URL
- // Check wether the proxy method has been configured
- if d.Proxy != nil {
- proxyURL, err = d.Proxy(req)
- }
- if err != nil {
- return nil, nil, err
+ trace := httptrace.ContextClientTrace(ctx)
+ if trace != nil && trace.GetConn != nil {
+ trace.GetConn(hostPort)
}
- var targetHostPort string
- if proxyURL != nil {
- targetHostPort, _ = hostPortNoPort(proxyURL)
- } else {
- targetHostPort = hostPort
+ netConn, err := netDial("tcp", hostPort)
+ if trace != nil && trace.GotConn != nil {
+ trace.GotConn(httptrace.GotConnInfo{
+ Conn: netConn,
+ })
}
-
- var deadline time.Time
- if d.HandshakeTimeout != 0 {
- deadline = time.Now().Add(d.HandshakeTimeout)
- }
-
- netDial := d.NetDial
- if netDial == nil {
- netDialer := &net.Dialer{Deadline: deadline}
- netDial = netDialer.Dial
- }
-
- netConn, err := netDial("tcp", targetHostPort)
if err != nil {
return nil, nil, err
}
@@ -286,42 +304,6 @@ func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Re
}
}()
- if err := netConn.SetDeadline(deadline); err != nil {
- return nil, nil, err
- }
-
- if proxyURL != nil {
- connectHeader := make(http.Header)
- if user := proxyURL.User; user != nil {
- proxyUser := user.Username()
- if proxyPassword, passwordSet := user.Password(); passwordSet {
- credential := base64.StdEncoding.EncodeToString([]byte(proxyUser + ":" + proxyPassword))
- connectHeader.Set("Proxy-Authorization", "Basic "+credential)
- }
- }
- connectReq := &http.Request{
- Method: "CONNECT",
- URL: &url.URL{Opaque: hostPort},
- Host: hostPort,
- Header: connectHeader,
- }
-
- connectReq.Write(netConn)
-
- // Read response.
- // Okay to use and discard buffered reader here, because
- // TLS server will not speak until spoken to.
- br := bufio.NewReader(netConn)
- resp, err := http.ReadResponse(br, connectReq)
- if err != nil {
- return nil, nil, err
- }
- if resp.StatusCode != 200 {
- f := strings.SplitN(resp.Status, " ", 2)
- return nil, nil, errors.New(f[1])
- }
- }
-
if u.Scheme == "https" {
cfg := cloneTLSConfig(d.TLSClientConfig)
if cfg.ServerName == "" {
@@ -329,22 +311,31 @@ func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Re
}
tlsConn := tls.Client(netConn, cfg)
netConn = tlsConn
- if err := tlsConn.Handshake(); err != nil {
- return nil, nil, err
+
+ var err error
+ if trace != nil {
+ err = doHandshakeWithTrace(trace, tlsConn, cfg)
+ } else {
+ err = doHandshake(tlsConn, cfg)
}
- if !cfg.InsecureSkipVerify {
- if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
- return nil, nil, err
- }
+
+ if err != nil {
+ return nil, nil, err
}
}
- conn := newConn(netConn, false, d.ReadBufferSize, d.WriteBufferSize)
+ conn := newConn(netConn, false, d.ReadBufferSize, d.WriteBufferSize, d.WriteBufferPool, nil, nil)
if err := req.Write(netConn); err != nil {
return nil, nil, err
}
+ if trace != nil && trace.GotFirstResponseByte != nil {
+ if peek, err := conn.br.Peek(1); err == nil && len(peek) == 1 {
+ trace.GotFirstResponseByte()
+ }
+ }
+
resp, err := http.ReadResponse(conn.br, req)
if err != nil {
return nil, nil, err
@@ -390,3 +381,15 @@ func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Re
netConn = nil // to avoid close in defer.
return conn, resp, nil
}
+
+func doHandshake(tlsConn *tls.Conn, cfg *tls.Config) error {
+ if err := tlsConn.Handshake(); err != nil {
+ return err
+ }
+ if !cfg.InsecureSkipVerify {
+ if err := tlsConn.VerifyHostname(cfg.ServerName); err != nil {
+ return err
+ }
+ }
+ return nil
+}
diff --git a/vendor/github.com/gorilla/websocket/conn.go b/vendor/github.com/gorilla/websocket/conn.go
index 97e1dbacb..d2a21c148 100644
--- a/vendor/github.com/gorilla/websocket/conn.go
+++ b/vendor/github.com/gorilla/websocket/conn.go
@@ -76,7 +76,7 @@ const (
// is UTF-8 encoded text.
PingMessage = 9
- // PongMessage denotes a ping control message. The optional message payload
+ // PongMessage denotes a pong control message. The optional message payload
// is UTF-8 encoded text.
PongMessage = 10
)
@@ -100,9 +100,8 @@ func (e *netError) Error() string { return e.msg }
func (e *netError) Temporary() bool { return e.temporary }
func (e *netError) Timeout() bool { return e.timeout }
-// CloseError represents close frame.
+// CloseError represents a close message.
type CloseError struct {
-
// Code is defined in RFC 6455, section 11.7.
Code int
@@ -224,6 +223,20 @@ func isValidReceivedCloseCode(code int) bool {
return validReceivedCloseCodes[code] || (code >= 3000 && code <= 4999)
}
+// BufferPool represents a pool of buffers. The *sync.Pool type satisfies this
+// interface. The type of the value stored in a pool is not specified.
+type BufferPool interface {
+ // Get gets a value from the pool or returns nil if the pool is empty.
+ Get() interface{}
+ // Put adds a value to the pool.
+ Put(interface{})
+}
+
+// writePoolData is the type added to the write buffer pool. This wrapper is
+// used to prevent applications from peeking at and depending on the values
+// added to the pool.
+type writePoolData struct{ buf []byte }
+
// The Conn type represents a WebSocket connection.
type Conn struct {
conn net.Conn
@@ -233,6 +246,8 @@ type Conn struct {
// Write fields
mu chan bool // used as mutex to protect write to conn
writeBuf []byte // frame is constructed in this buffer.
+ writePool BufferPool
+ writeBufSize int
writeDeadline time.Time
writer io.WriteCloser // the current writer returned to the application
isWriting bool // for best-effort concurrent write detection
@@ -264,64 +279,29 @@ type Conn struct {
newDecompressionReader func(io.Reader) io.ReadCloser
}
-func newConn(conn net.Conn, isServer bool, readBufferSize, writeBufferSize int) *Conn {
- return newConnBRW(conn, isServer, readBufferSize, writeBufferSize, nil)
-}
+func newConn(conn net.Conn, isServer bool, readBufferSize, writeBufferSize int, writeBufferPool BufferPool, br *bufio.Reader, writeBuf []byte) *Conn {
-type writeHook struct {
- p []byte
-}
-
-func (wh *writeHook) Write(p []byte) (int, error) {
- wh.p = p
- return len(p), nil
-}
-
-func newConnBRW(conn net.Conn, isServer bool, readBufferSize, writeBufferSize int, brw *bufio.ReadWriter) *Conn {
- mu := make(chan bool, 1)
- mu <- true
-
- var br *bufio.Reader
- if readBufferSize == 0 && brw != nil && brw.Reader != nil {
- // Reuse the supplied bufio.Reader if the buffer has a useful size.
- // This code assumes that peek on a reader returns
- // bufio.Reader.buf[:0].
- brw.Reader.Reset(conn)
- if p, err := brw.Reader.Peek(0); err == nil && cap(p) >= 256 {
- br = brw.Reader
- }
- }
if br == nil {
if readBufferSize == 0 {
readBufferSize = defaultReadBufferSize
- }
- if readBufferSize < maxControlFramePayloadSize {
+ } else if readBufferSize < maxControlFramePayloadSize {
+ // must be large enough for control frame
readBufferSize = maxControlFramePayloadSize
}
br = bufio.NewReaderSize(conn, readBufferSize)
}
- var writeBuf []byte
- if writeBufferSize == 0 && brw != nil && brw.Writer != nil {
- // Use the bufio.Writer's buffer if the buffer has a useful size. This
- // code assumes that bufio.Writer.buf[:1] is passed to the
- // bufio.Writer's underlying writer.
- var wh writeHook
- brw.Writer.Reset(&wh)
- brw.Writer.WriteByte(0)
- brw.Flush()
- if cap(wh.p) >= maxFrameHeaderSize+256 {
- writeBuf = wh.p[:cap(wh.p)]
- }
- }
-
- if writeBuf == nil {
- if writeBufferSize == 0 {
- writeBufferSize = defaultWriteBufferSize
- }
- writeBuf = make([]byte, writeBufferSize+maxFrameHeaderSize)
+ if writeBufferSize <= 0 {
+ writeBufferSize = defaultWriteBufferSize
+ }
+ writeBufferSize += maxFrameHeaderSize
+
+ if writeBuf == nil && writeBufferPool == nil {
+ writeBuf = make([]byte, writeBufferSize)
}
+ mu := make(chan bool, 1)
+ mu <- true
c := &Conn{
isServer: isServer,
br: br,
@@ -329,6 +309,8 @@ func newConnBRW(conn net.Conn, isServer bool, readBufferSize, writeBufferSize in
mu: mu,
readFinal: true,
writeBuf: writeBuf,
+ writePool: writeBufferPool,
+ writeBufSize: writeBufferSize,
enableWriteCompression: true,
compressionLevel: defaultCompressionLevel,
}
@@ -343,7 +325,8 @@ func (c *Conn) Subprotocol() string {
return c.subprotocol
}
-// Close closes the underlying network connection without sending or waiting for a close frame.
+// Close closes the underlying network connection without sending or waiting
+// for a close message.
func (c *Conn) Close() error {
return c.conn.Close()
}
@@ -370,7 +353,16 @@ func (c *Conn) writeFatal(err error) error {
return err
}
-func (c *Conn) write(frameType int, deadline time.Time, bufs ...[]byte) error {
+func (c *Conn) read(n int) ([]byte, error) {
+ p, err := c.br.Peek(n)
+ if err == io.EOF {
+ err = errUnexpectedEOF
+ }
+ c.br.Discard(len(p))
+ return p, err
+}
+
+func (c *Conn) write(frameType int, deadline time.Time, buf0, buf1 []byte) error {
<-c.mu
defer func() { c.mu <- true }()
@@ -382,15 +374,14 @@ func (c *Conn) write(frameType int, deadline time.Time, bufs ...[]byte) error {
}
c.conn.SetWriteDeadline(deadline)
- for _, buf := range bufs {
- if len(buf) > 0 {
- _, err := c.conn.Write(buf)
- if err != nil {
- return c.writeFatal(err)
- }
- }
+ if len(buf1) == 0 {
+ _, err = c.conn.Write(buf0)
+ } else {
+ err = c.writeBufs(buf0, buf1)
+ }
+ if err != nil {
+ return c.writeFatal(err)
}
-
if frameType == CloseMessage {
c.writeFatal(ErrCloseSent)
}
@@ -476,7 +467,19 @@ func (c *Conn) prepWrite(messageType int) error {
c.writeErrMu.Lock()
err := c.writeErr
c.writeErrMu.Unlock()
- return err
+ if err != nil {
+ return err
+ }
+
+ if c.writeBuf == nil {
+ wpd, ok := c.writePool.Get().(writePoolData)
+ if ok {
+ c.writeBuf = wpd.buf
+ } else {
+ c.writeBuf = make([]byte, c.writeBufSize)
+ }
+ }
+ return nil
}
// NextWriter returns a writer for the next message to send. The writer's Close
@@ -484,6 +487,9 @@ func (c *Conn) prepWrite(messageType int) error {
//
// There can be at most one open writer on a connection. NextWriter closes the
// previous writer if the application has not already done so.
+//
+// All message types (TextMessage, BinaryMessage, CloseMessage, PingMessage and
+// PongMessage) are supported.
func (c *Conn) NextWriter(messageType int) (io.WriteCloser, error) {
if err := c.prepWrite(messageType); err != nil {
return nil, err
@@ -599,6 +605,10 @@ func (w *messageWriter) flushFrame(final bool, extra []byte) error {
if final {
c.writer = nil
+ if c.writePool != nil {
+ c.writePool.Put(writePoolData{buf: c.writeBuf})
+ c.writeBuf = nil
+ }
return nil
}
@@ -764,7 +774,6 @@ func (c *Conn) SetWriteDeadline(t time.Time) error {
// Read methods
func (c *Conn) advanceFrame() (int, error) {
-
// 1. Skip remainder of previous frame.
if c.readRemaining > 0 {
@@ -1033,7 +1042,7 @@ func (c *Conn) SetReadDeadline(t time.Time) error {
}
// SetReadLimit sets the maximum size for a message read from the peer. If a
-// message exceeds the limit, the connection sends a close frame to the peer
+// message exceeds the limit, the connection sends a close message to the peer
// and returns ErrReadLimit to the application.
func (c *Conn) SetReadLimit(limit int64) {
c.readLimit = limit
@@ -1046,24 +1055,22 @@ func (c *Conn) CloseHandler() func(code int, text string) error {
// SetCloseHandler sets the handler for close messages received from the peer.
// The code argument to h is the received close code or CloseNoStatusReceived
-// if the close message is empty. The default close handler sends a close frame
-// back to the peer.
+// if the close message is empty. The default close handler sends a close
+// message back to the peer.
//
-// The application must read the connection to process close messages as
-// described in the section on Control Frames above.
+// The handler function is called from the NextReader, ReadMessage and message
+// reader Read methods. The application must read the connection to process
+// close messages as described in the section on Control Messages above.
//
-// The connection read methods return a CloseError when a close frame is
+// The connection read methods return a CloseError when a close message is
// received. Most applications should handle close messages as part of their
// normal error handling. Applications should only set a close handler when the
-// application must perform some action before sending a close frame back to
+// application must perform some action before sending a close message back to
// the peer.
func (c *Conn) SetCloseHandler(h func(code int, text string) error) {
if h == nil {
h = func(code int, text string) error {
- message := []byte{}
- if code != CloseNoStatusReceived {
- message = FormatCloseMessage(code, "")
- }
+ message := FormatCloseMessage(code, "")
c.WriteControl(CloseMessage, message, time.Now().Add(writeWait))
return nil
}
@@ -1077,11 +1084,12 @@ func (c *Conn) PingHandler() func(appData string) error {
}
// SetPingHandler sets the handler for ping messages received from the peer.
-// The appData argument to h is the PING frame application data. The default
+// The appData argument to h is the PING message application data. The default
// ping handler sends a pong to the peer.
//
-// The application must read the connection to process ping messages as
-// described in the section on Control Frames above.
+// The handler function is called from the NextReader, ReadMessage and message
+// reader Read methods. The application must read the connection to process
+// ping messages as described in the section on Control Messages above.
func (c *Conn) SetPingHandler(h func(appData string) error) {
if h == nil {
h = func(message string) error {
@@ -1103,11 +1111,12 @@ func (c *Conn) PongHandler() func(appData string) error {
}
// SetPongHandler sets the handler for pong messages received from the peer.
-// The appData argument to h is the PONG frame application data. The default
+// The appData argument to h is the PONG message application data. The default
// pong handler does nothing.
//
-// The application must read the connection to process ping messages as
-// described in the section on Control Frames above.
+// The handler function is called from the NextReader, ReadMessage and message
+// reader Read methods. The application must read the connection to process
+// pong messages as described in the section on Control Messages above.
func (c *Conn) SetPongHandler(h func(appData string) error) {
if h == nil {
h = func(string) error { return nil }
@@ -1141,7 +1150,14 @@ func (c *Conn) SetCompressionLevel(level int) error {
}
// FormatCloseMessage formats closeCode and text as a WebSocket close message.
+// An empty message is returned for code CloseNoStatusReceived.
func FormatCloseMessage(closeCode int, text string) []byte {
+ if closeCode == CloseNoStatusReceived {
+ // Return empty message because it's illegal to send
+ // CloseNoStatusReceived. Return non-nil value in case application
+ // checks for nil.
+ return []byte{}
+ }
buf := make([]byte, 2+len(text))
binary.BigEndian.PutUint16(buf, uint16(closeCode))
copy(buf[2:], text)
diff --git a/vendor/github.com/gorilla/websocket/conn_read_legacy.go b/vendor/github.com/gorilla/websocket/conn_read_legacy.go
deleted file mode 100644
index 018541cf6..000000000
--- a/vendor/github.com/gorilla/websocket/conn_read_legacy.go
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !go1.5
-
-package websocket
-
-import "io"
-
-func (c *Conn) read(n int) ([]byte, error) {
- p, err := c.br.Peek(n)
- if err == io.EOF {
- err = errUnexpectedEOF
- }
- if len(p) > 0 {
- // advance over the bytes just read
- io.ReadFull(c.br, p)
- }
- return p, err
-}
diff --git a/vendor/github.com/gorilla/websocket/conn_read.go b/vendor/github.com/gorilla/websocket/conn_write.go
similarity index 52%
rename from vendor/github.com/gorilla/websocket/conn_read.go
rename to vendor/github.com/gorilla/websocket/conn_write.go
index 1ea15059e..a509a21f8 100644
--- a/vendor/github.com/gorilla/websocket/conn_read.go
+++ b/vendor/github.com/gorilla/websocket/conn_write.go
@@ -2,17 +2,14 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
-// +build go1.5
+// +build go1.8
package websocket
-import "io"
+import "net"
-func (c *Conn) read(n int) ([]byte, error) {
- p, err := c.br.Peek(n)
- if err == io.EOF {
- err = errUnexpectedEOF
- }
- c.br.Discard(len(p))
- return p, err
+func (c *Conn) writeBufs(bufs ...[]byte) error {
+ b := net.Buffers(bufs)
+ _, err := b.WriteTo(c.conn)
+ return err
}
diff --git a/vendor/github.com/gorilla/websocket/conn_write_legacy.go b/vendor/github.com/gorilla/websocket/conn_write_legacy.go
new file mode 100644
index 000000000..37edaff5a
--- /dev/null
+++ b/vendor/github.com/gorilla/websocket/conn_write_legacy.go
@@ -0,0 +1,18 @@
+// Copyright 2016 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !go1.8
+
+package websocket
+
+func (c *Conn) writeBufs(bufs ...[]byte) error {
+ for _, buf := range bufs {
+ if len(buf) > 0 {
+ if _, err := c.conn.Write(buf); err != nil {
+ return err
+ }
+ }
+ }
+ return nil
+}
diff --git a/vendor/github.com/gorilla/websocket/doc.go b/vendor/github.com/gorilla/websocket/doc.go
index e291a952c..dcce1a63c 100644
--- a/vendor/github.com/gorilla/websocket/doc.go
+++ b/vendor/github.com/gorilla/websocket/doc.go
@@ -6,9 +6,8 @@
//
// Overview
//
-// The Conn type represents a WebSocket connection. A server application uses
-// the Upgrade function from an Upgrader object with a HTTP request handler
-// to get a pointer to a Conn:
+// The Conn type represents a WebSocket connection. A server application calls
+// the Upgrader.Upgrade method from an HTTP request handler to get a *Conn:
//
// var upgrader = websocket.Upgrader{
// ReadBufferSize: 1024,
@@ -31,10 +30,12 @@
// for {
// messageType, p, err := conn.ReadMessage()
// if err != nil {
+// log.Println(err)
// return
// }
-// if err = conn.WriteMessage(messageType, p); err != nil {
-// return err
+// if err := conn.WriteMessage(messageType, p); err != nil {
+// log.Println(err)
+// return
// }
// }
//
@@ -85,20 +86,26 @@
// and pong. Call the connection WriteControl, WriteMessage or NextWriter
// methods to send a control message to the peer.
//
-// Connections handle received close messages by sending a close message to the
-// peer and returning a *CloseError from the the NextReader, ReadMessage or the
-// message Read method.
+// Connections handle received close messages by calling the handler function
+// set with the SetCloseHandler method and by returning a *CloseError from the
+// NextReader, ReadMessage or the message Read method. The default close
+// handler sends a close message to the peer.
//
-// Connections handle received ping and pong messages by invoking callback
-// functions set with SetPingHandler and SetPongHandler methods. The callback
-// functions are called from the NextReader, ReadMessage and the message Read
-// methods.
+// Connections handle received ping messages by calling the handler function
+// set with the SetPingHandler method. The default ping handler sends a pong
+// message to the peer.
//
-// The default ping handler sends a pong to the peer. The application's reading
-// goroutine can block for a short time while the handler writes the pong data
-// to the connection.
+// Connections handle received pong messages by calling the handler function
+// set with the SetPongHandler method. The default pong handler does nothing.
+// If an application sends ping messages, then the application should set a
+// pong handler to receive the corresponding pong.
//
-// The application must read the connection to process ping, pong and close
+// The control message handler functions are called from the NextReader,
+// ReadMessage and message reader Read methods. The default close and ping
+// handlers can block these methods for a short time when the handler writes to
+// the connection.
+//
+// The application must read the connection to process close, ping and pong
// messages sent from the peer. If the application is not otherwise interested
// in messages from the peer, then the application should start a goroutine to
// read and discard messages from the peer. A simple example is:
@@ -137,19 +144,12 @@
// method fails the WebSocket handshake with HTTP status 403.
//
// If the CheckOrigin field is nil, then the Upgrader uses a safe default: fail
-// the handshake if the Origin request header is present and not equal to the
-// Host request header.
+// the handshake if the Origin request header is present and the Origin host is
+// not equal to the Host request header.
//
-// An application can allow connections from any origin by specifying a
-// function that always returns true:
-//
-// var upgrader = websocket.Upgrader{
-// CheckOrigin: func(r *http.Request) bool { return true },
-// }
-//
-// The deprecated Upgrade function does not enforce an origin policy. It's the
-// application's responsibility to check the Origin header before calling
-// Upgrade.
+// The deprecated package-level Upgrade function does not perform origin
+// checking. The application is responsible for checking the Origin header
+// before calling the Upgrade function.
//
// Compression EXPERIMENTAL
//
diff --git a/vendor/github.com/gorilla/websocket/json.go b/vendor/github.com/gorilla/websocket/json.go
index 4f0e36875..dc2c1f641 100644
--- a/vendor/github.com/gorilla/websocket/json.go
+++ b/vendor/github.com/gorilla/websocket/json.go
@@ -9,12 +9,14 @@ import (
"io"
)
-// WriteJSON is deprecated, use c.WriteJSON instead.
+// WriteJSON writes the JSON encoding of v as a message.
+//
+// Deprecated: Use c.WriteJSON instead.
func WriteJSON(c *Conn, v interface{}) error {
return c.WriteJSON(v)
}
-// WriteJSON writes the JSON encoding of v to the connection.
+// WriteJSON writes the JSON encoding of v as a message.
//
// See the documentation for encoding/json Marshal for details about the
// conversion of Go values to JSON.
@@ -31,7 +33,10 @@ func (c *Conn) WriteJSON(v interface{}) error {
return err2
}
-// ReadJSON is deprecated, use c.ReadJSON instead.
+// ReadJSON reads the next JSON-encoded message from the connection and stores
+// it in the value pointed to by v.
+//
+// Deprecated: Use c.ReadJSON instead.
func ReadJSON(c *Conn, v interface{}) error {
return c.ReadJSON(v)
}
diff --git a/vendor/github.com/gorilla/websocket/mask.go b/vendor/github.com/gorilla/websocket/mask.go
index 6a88bbc74..577fce9ef 100644
--- a/vendor/github.com/gorilla/websocket/mask.go
+++ b/vendor/github.com/gorilla/websocket/mask.go
@@ -11,7 +11,6 @@ import "unsafe"
const wordSize = int(unsafe.Sizeof(uintptr(0)))
func maskBytes(key [4]byte, pos int, b []byte) int {
-
// Mask one byte at a time for small buffers.
if len(b) < 2*wordSize {
for i := range b {
diff --git a/vendor/github.com/gorilla/websocket/prepared.go b/vendor/github.com/gorilla/websocket/prepared.go
index 1efffbd1e..74ec565d2 100644
--- a/vendor/github.com/gorilla/websocket/prepared.go
+++ b/vendor/github.com/gorilla/websocket/prepared.go
@@ -19,7 +19,6 @@ import (
type PreparedMessage struct {
messageType int
data []byte
- err error
mu sync.Mutex
frames map[prepareKey]*preparedFrame
}
diff --git a/vendor/github.com/gorilla/websocket/proxy.go b/vendor/github.com/gorilla/websocket/proxy.go
new file mode 100644
index 000000000..bf2478e43
--- /dev/null
+++ b/vendor/github.com/gorilla/websocket/proxy.go
@@ -0,0 +1,77 @@
+// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+ "bufio"
+ "encoding/base64"
+ "errors"
+ "net"
+ "net/http"
+ "net/url"
+ "strings"
+)
+
+type netDialerFunc func(network, addr string) (net.Conn, error)
+
+func (fn netDialerFunc) Dial(network, addr string) (net.Conn, error) {
+ return fn(network, addr)
+}
+
+func init() {
+ proxy_RegisterDialerType("http", func(proxyURL *url.URL, forwardDialer proxy_Dialer) (proxy_Dialer, error) {
+ return &httpProxyDialer{proxyURL: proxyURL, fowardDial: forwardDialer.Dial}, nil
+ })
+}
+
+type httpProxyDialer struct {
+ proxyURL *url.URL
+ fowardDial func(network, addr string) (net.Conn, error)
+}
+
+func (hpd *httpProxyDialer) Dial(network string, addr string) (net.Conn, error) {
+ hostPort, _ := hostPortNoPort(hpd.proxyURL)
+ conn, err := hpd.fowardDial(network, hostPort)
+ if err != nil {
+ return nil, err
+ }
+
+ connectHeader := make(http.Header)
+ if user := hpd.proxyURL.User; user != nil {
+ proxyUser := user.Username()
+ if proxyPassword, passwordSet := user.Password(); passwordSet {
+ credential := base64.StdEncoding.EncodeToString([]byte(proxyUser + ":" + proxyPassword))
+ connectHeader.Set("Proxy-Authorization", "Basic "+credential)
+ }
+ }
+
+ connectReq := &http.Request{
+ Method: "CONNECT",
+ URL: &url.URL{Opaque: addr},
+ Host: addr,
+ Header: connectHeader,
+ }
+
+ if err := connectReq.Write(conn); err != nil {
+ conn.Close()
+ return nil, err
+ }
+
+ // Read response. It's OK to use and discard buffered reader here becaue
+ // the remote server does not speak until spoken to.
+ br := bufio.NewReader(conn)
+ resp, err := http.ReadResponse(br, connectReq)
+ if err != nil {
+ conn.Close()
+ return nil, err
+ }
+
+ if resp.StatusCode != 200 {
+ conn.Close()
+ f := strings.SplitN(resp.Status, " ", 2)
+ return nil, errors.New(f[1])
+ }
+ return conn, nil
+}
diff --git a/vendor/github.com/gorilla/websocket/server.go b/vendor/github.com/gorilla/websocket/server.go
index 3495e0f1a..a761824b3 100644
--- a/vendor/github.com/gorilla/websocket/server.go
+++ b/vendor/github.com/gorilla/websocket/server.go
@@ -7,7 +7,7 @@ package websocket
import (
"bufio"
"errors"
- "net"
+ "io"
"net/http"
"net/url"
"strings"
@@ -33,10 +33,23 @@ type Upgrader struct {
// or received.
ReadBufferSize, WriteBufferSize int
+ // WriteBufferPool is a pool of buffers for write operations. If the value
+ // is not set, then write buffers are allocated to the connection for the
+ // lifetime of the connection.
+ //
+ // A pool is most useful when the application has a modest volume of writes
+ // across a large number of connections.
+ //
+ // Applications should use a single pool for each unique value of
+ // WriteBufferSize.
+ WriteBufferPool BufferPool
+
// Subprotocols specifies the server's supported protocols in order of
- // preference. If this field is set, then the Upgrade method negotiates a
+ // preference. If this field is not nil, then the Upgrade method negotiates a
// subprotocol by selecting the first match in this list with a protocol
- // requested by the client.
+ // requested by the client. If there's no match, then no protocol is
+ // negotiated (the Sec-Websocket-Protocol header is not included in the
+ // handshake response).
Subprotocols []string
// Error specifies the function for generating HTTP error responses. If Error
@@ -44,8 +57,12 @@ type Upgrader struct {
Error func(w http.ResponseWriter, r *http.Request, status int, reason error)
// CheckOrigin returns true if the request Origin header is acceptable. If
- // CheckOrigin is nil, the host in the Origin header must not be set or
- // must match the host of the request.
+ // CheckOrigin is nil, then a safe default is used: return false if the
+ // Origin request header is present and the origin host is not equal to
+ // request Host header.
+ //
+ // A CheckOrigin function should carefully validate the request origin to
+ // prevent cross-site request forgery.
CheckOrigin func(r *http.Request) bool
// EnableCompression specify if the server should attempt to negotiate per
@@ -76,7 +93,7 @@ func checkSameOrigin(r *http.Request) bool {
if err != nil {
return false
}
- return u.Host == r.Host
+ return equalASCIIFold(u.Host, r.Host)
}
func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header) string {
@@ -99,42 +116,44 @@ func (u *Upgrader) selectSubprotocol(r *http.Request, responseHeader http.Header
//
// The responseHeader is included in the response to the client's upgrade
// request. Use the responseHeader to specify cookies (Set-Cookie) and the
-// application negotiated subprotocol (Sec-Websocket-Protocol).
+// application negotiated subprotocol (Sec-WebSocket-Protocol).
//
// If the upgrade fails, then Upgrade replies to the client with an HTTP error
// response.
func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeader http.Header) (*Conn, error) {
- if r.Method != "GET" {
- return u.returnError(w, r, http.StatusMethodNotAllowed, "websocket: not a websocket handshake: request method is not GET")
- }
-
- if _, ok := responseHeader["Sec-Websocket-Extensions"]; ok {
- return u.returnError(w, r, http.StatusInternalServerError, "websocket: application specific 'Sec-Websocket-Extensions' headers are unsupported")
- }
+ const badHandshake = "websocket: the client is not using the websocket protocol: "
if !tokenListContainsValue(r.Header, "Connection", "upgrade") {
- return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: 'upgrade' token not found in 'Connection' header")
+ return u.returnError(w, r, http.StatusBadRequest, badHandshake+"'upgrade' token not found in 'Connection' header")
}
if !tokenListContainsValue(r.Header, "Upgrade", "websocket") {
- return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: 'websocket' token not found in 'Upgrade' header")
+ return u.returnError(w, r, http.StatusBadRequest, badHandshake+"'websocket' token not found in 'Upgrade' header")
+ }
+
+ if r.Method != "GET" {
+ return u.returnError(w, r, http.StatusMethodNotAllowed, badHandshake+"request method is not GET")
}
if !tokenListContainsValue(r.Header, "Sec-Websocket-Version", "13") {
return u.returnError(w, r, http.StatusBadRequest, "websocket: unsupported version: 13 not found in 'Sec-Websocket-Version' header")
}
+ if _, ok := responseHeader["Sec-Websocket-Extensions"]; ok {
+ return u.returnError(w, r, http.StatusInternalServerError, "websocket: application specific 'Sec-WebSocket-Extensions' headers are unsupported")
+ }
+
checkOrigin := u.CheckOrigin
if checkOrigin == nil {
checkOrigin = checkSameOrigin
}
if !checkOrigin(r) {
- return u.returnError(w, r, http.StatusForbidden, "websocket: 'Origin' header value not allowed")
+ return u.returnError(w, r, http.StatusForbidden, "websocket: request origin not allowed by Upgrader.CheckOrigin")
}
challengeKey := r.Header.Get("Sec-Websocket-Key")
if challengeKey == "" {
- return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: `Sec-Websocket-Key' header is missing or blank")
+ return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: `Sec-WebSocket-Key' header is missing or blank")
}
subprotocol := u.selectSubprotocol(r, responseHeader)
@@ -151,17 +170,12 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
}
}
- var (
- netConn net.Conn
- err error
- )
-
h, ok := w.(http.Hijacker)
if !ok {
return u.returnError(w, r, http.StatusInternalServerError, "websocket: response does not implement http.Hijacker")
}
var brw *bufio.ReadWriter
- netConn, brw, err = h.Hijack()
+ netConn, brw, err := h.Hijack()
if err != nil {
return u.returnError(w, r, http.StatusInternalServerError, err.Error())
}
@@ -171,7 +185,21 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
return nil, errors.New("websocket: client sent data before handshake is complete")
}
- c := newConnBRW(netConn, true, u.ReadBufferSize, u.WriteBufferSize, brw)
+ var br *bufio.Reader
+ if u.ReadBufferSize == 0 && bufioReaderSize(netConn, brw.Reader) > 256 {
+ // Reuse hijacked buffered reader as connection reader.
+ br = brw.Reader
+ }
+
+ buf := bufioWriterBuffer(netConn, brw.Writer)
+
+ var writeBuf []byte
+ if u.WriteBufferPool == nil && u.WriteBufferSize == 0 && len(buf) >= maxFrameHeaderSize+256 {
+ // Reuse hijacked write buffer as connection buffer.
+ writeBuf = buf
+ }
+
+ c := newConn(netConn, true, u.ReadBufferSize, u.WriteBufferSize, u.WriteBufferPool, br, writeBuf)
c.subprotocol = subprotocol
if compress {
@@ -179,17 +207,23 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
c.newDecompressionReader = decompressNoContextTakeover
}
- p := c.writeBuf[:0]
+ // Use larger of hijacked buffer and connection write buffer for header.
+ p := buf
+ if len(c.writeBuf) > len(p) {
+ p = c.writeBuf
+ }
+ p = p[:0]
+
p = append(p, "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: "...)
p = append(p, computeAcceptKey(challengeKey)...)
p = append(p, "\r\n"...)
if c.subprotocol != "" {
- p = append(p, "Sec-Websocket-Protocol: "...)
+ p = append(p, "Sec-WebSocket-Protocol: "...)
p = append(p, c.subprotocol...)
p = append(p, "\r\n"...)
}
if compress {
- p = append(p, "Sec-Websocket-Extensions: permessage-deflate; server_no_context_takeover; client_no_context_takeover\r\n"...)
+ p = append(p, "Sec-WebSocket-Extensions: permessage-deflate; server_no_context_takeover; client_no_context_takeover\r\n"...)
}
for k, vs := range responseHeader {
if k == "Sec-Websocket-Protocol" {
@@ -230,13 +264,14 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade
// Upgrade upgrades the HTTP server connection to the WebSocket protocol.
//
-// This function is deprecated, use websocket.Upgrader instead.
+// Deprecated: Use websocket.Upgrader instead.
//
-// The application is responsible for checking the request origin before
-// calling Upgrade. An example implementation of the same origin policy is:
+// Upgrade does not perform origin checking. The application is responsible for
+// checking the Origin header before calling Upgrade. An example implementation
+// of the same origin policy check is:
//
// if req.Header.Get("Origin") != "http://"+req.Host {
-// http.Error(w, "Origin not allowed", 403)
+// http.Error(w, "Origin not allowed", http.StatusForbidden)
// return
// }
//
@@ -289,3 +324,40 @@ func IsWebSocketUpgrade(r *http.Request) bool {
return tokenListContainsValue(r.Header, "Connection", "upgrade") &&
tokenListContainsValue(r.Header, "Upgrade", "websocket")
}
+
+// bufioReaderSize size returns the size of a bufio.Reader.
+func bufioReaderSize(originalReader io.Reader, br *bufio.Reader) int {
+ // This code assumes that peek on a reset reader returns
+ // bufio.Reader.buf[:0].
+ // TODO: Use bufio.Reader.Size() after Go 1.10
+ br.Reset(originalReader)
+ if p, err := br.Peek(0); err == nil {
+ return cap(p)
+ }
+ return 0
+}
+
+// writeHook is an io.Writer that records the last slice passed to it vio
+// io.Writer.Write.
+type writeHook struct {
+ p []byte
+}
+
+func (wh *writeHook) Write(p []byte) (int, error) {
+ wh.p = p
+ return len(p), nil
+}
+
+// bufioWriterBuffer grabs the buffer from a bufio.Writer.
+func bufioWriterBuffer(originalWriter io.Writer, bw *bufio.Writer) []byte {
+ // This code assumes that bufio.Writer.buf[:1] is passed to the
+ // bufio.Writer's underlying writer.
+ var wh writeHook
+ bw.Reset(&wh)
+ bw.WriteByte(0)
+ bw.Flush()
+
+ bw.Reset(originalWriter)
+
+ return wh.p[:cap(wh.p)]
+}
diff --git a/vendor/github.com/gorilla/websocket/trace.go b/vendor/github.com/gorilla/websocket/trace.go
new file mode 100644
index 000000000..834f122a0
--- /dev/null
+++ b/vendor/github.com/gorilla/websocket/trace.go
@@ -0,0 +1,19 @@
+// +build go1.8
+
+package websocket
+
+import (
+ "crypto/tls"
+ "net/http/httptrace"
+)
+
+func doHandshakeWithTrace(trace *httptrace.ClientTrace, tlsConn *tls.Conn, cfg *tls.Config) error {
+ if trace.TLSHandshakeStart != nil {
+ trace.TLSHandshakeStart()
+ }
+ err := doHandshake(tlsConn, cfg)
+ if trace.TLSHandshakeDone != nil {
+ trace.TLSHandshakeDone(tlsConn.ConnectionState(), err)
+ }
+ return err
+}
diff --git a/vendor/github.com/gorilla/websocket/trace_17.go b/vendor/github.com/gorilla/websocket/trace_17.go
new file mode 100644
index 000000000..77d05a0b5
--- /dev/null
+++ b/vendor/github.com/gorilla/websocket/trace_17.go
@@ -0,0 +1,12 @@
+// +build !go1.8
+
+package websocket
+
+import (
+ "crypto/tls"
+ "net/http/httptrace"
+)
+
+func doHandshakeWithTrace(trace *httptrace.ClientTrace, tlsConn *tls.Conn, cfg *tls.Config) error {
+ return doHandshake(tlsConn, cfg)
+}
diff --git a/vendor/github.com/gorilla/websocket/util.go b/vendor/github.com/gorilla/websocket/util.go
index 9a4908df2..354001e1e 100644
--- a/vendor/github.com/gorilla/websocket/util.go
+++ b/vendor/github.com/gorilla/websocket/util.go
@@ -11,6 +11,7 @@ import (
"io"
"net/http"
"strings"
+ "unicode/utf8"
)
var keyGUID = []byte("258EAFA5-E914-47DA-95CA-C5AB0DC85B11")
@@ -111,14 +112,14 @@ func nextTokenOrQuoted(s string) (value string, rest string) {
case escape:
escape = false
p[j] = b
- j += 1
+ j++
case b == '\\':
escape = true
case b == '"':
return string(p[:j]), s[i+1:]
default:
p[j] = b
- j += 1
+ j++
}
}
return "", ""
@@ -127,8 +128,31 @@ func nextTokenOrQuoted(s string) (value string, rest string) {
return "", ""
}
+// equalASCIIFold returns true if s is equal to t with ASCII case folding.
+func equalASCIIFold(s, t string) bool {
+ for s != "" && t != "" {
+ sr, size := utf8.DecodeRuneInString(s)
+ s = s[size:]
+ tr, size := utf8.DecodeRuneInString(t)
+ t = t[size:]
+ if sr == tr {
+ continue
+ }
+ if 'A' <= sr && sr <= 'Z' {
+ sr = sr + 'a' - 'A'
+ }
+ if 'A' <= tr && tr <= 'Z' {
+ tr = tr + 'a' - 'A'
+ }
+ if sr != tr {
+ return false
+ }
+ }
+ return s == t
+}
+
// tokenListContainsValue returns true if the 1#token header with the given
-// name contains token.
+// name contains a token equal to value with ASCII case folding.
func tokenListContainsValue(header http.Header, name string, value string) bool {
headers:
for _, s := range header[name] {
@@ -142,7 +166,7 @@ headers:
if s != "" && s[0] != ',' {
continue headers
}
- if strings.EqualFold(t, value) {
+ if equalASCIIFold(t, value) {
return true
}
if s == "" {
@@ -154,9 +178,8 @@ headers:
return false
}
-// parseExtensiosn parses WebSocket extensions from a header.
+// parseExtensions parses WebSocket extensions from a header.
func parseExtensions(header http.Header) []map[string]string {
-
// From RFC 6455:
//
// Sec-WebSocket-Extensions = extension-list
diff --git a/vendor/github.com/gorilla/websocket/x_net_proxy.go b/vendor/github.com/gorilla/websocket/x_net_proxy.go
new file mode 100644
index 000000000..2e668f6b8
--- /dev/null
+++ b/vendor/github.com/gorilla/websocket/x_net_proxy.go
@@ -0,0 +1,473 @@
+// Code generated by golang.org/x/tools/cmd/bundle. DO NOT EDIT.
+//go:generate bundle -o x_net_proxy.go golang.org/x/net/proxy
+
+// Package proxy provides support for a variety of protocols to proxy network
+// data.
+//
+
+package websocket
+
+import (
+ "errors"
+ "io"
+ "net"
+ "net/url"
+ "os"
+ "strconv"
+ "strings"
+ "sync"
+)
+
+type proxy_direct struct{}
+
+// Direct is a direct proxy: one that makes network connections directly.
+var proxy_Direct = proxy_direct{}
+
+func (proxy_direct) Dial(network, addr string) (net.Conn, error) {
+ return net.Dial(network, addr)
+}
+
+// A PerHost directs connections to a default Dialer unless the host name
+// requested matches one of a number of exceptions.
+type proxy_PerHost struct {
+ def, bypass proxy_Dialer
+
+ bypassNetworks []*net.IPNet
+ bypassIPs []net.IP
+ bypassZones []string
+ bypassHosts []string
+}
+
+// NewPerHost returns a PerHost Dialer that directs connections to either
+// defaultDialer or bypass, depending on whether the connection matches one of
+// the configured rules.
+func proxy_NewPerHost(defaultDialer, bypass proxy_Dialer) *proxy_PerHost {
+ return &proxy_PerHost{
+ def: defaultDialer,
+ bypass: bypass,
+ }
+}
+
+// Dial connects to the address addr on the given network through either
+// defaultDialer or bypass.
+func (p *proxy_PerHost) Dial(network, addr string) (c net.Conn, err error) {
+ host, _, err := net.SplitHostPort(addr)
+ if err != nil {
+ return nil, err
+ }
+
+ return p.dialerForRequest(host).Dial(network, addr)
+}
+
+func (p *proxy_PerHost) dialerForRequest(host string) proxy_Dialer {
+ if ip := net.ParseIP(host); ip != nil {
+ for _, net := range p.bypassNetworks {
+ if net.Contains(ip) {
+ return p.bypass
+ }
+ }
+ for _, bypassIP := range p.bypassIPs {
+ if bypassIP.Equal(ip) {
+ return p.bypass
+ }
+ }
+ return p.def
+ }
+
+ for _, zone := range p.bypassZones {
+ if strings.HasSuffix(host, zone) {
+ return p.bypass
+ }
+ if host == zone[1:] {
+ // For a zone ".example.com", we match "example.com"
+ // too.
+ return p.bypass
+ }
+ }
+ for _, bypassHost := range p.bypassHosts {
+ if bypassHost == host {
+ return p.bypass
+ }
+ }
+ return p.def
+}
+
+// AddFromString parses a string that contains comma-separated values
+// specifying hosts that should use the bypass proxy. Each value is either an
+// IP address, a CIDR range, a zone (*.example.com) or a host name
+// (localhost). A best effort is made to parse the string and errors are
+// ignored.
+func (p *proxy_PerHost) AddFromString(s string) {
+ hosts := strings.Split(s, ",")
+ for _, host := range hosts {
+ host = strings.TrimSpace(host)
+ if len(host) == 0 {
+ continue
+ }
+ if strings.Contains(host, "/") {
+ // We assume that it's a CIDR address like 127.0.0.0/8
+ if _, net, err := net.ParseCIDR(host); err == nil {
+ p.AddNetwork(net)
+ }
+ continue
+ }
+ if ip := net.ParseIP(host); ip != nil {
+ p.AddIP(ip)
+ continue
+ }
+ if strings.HasPrefix(host, "*.") {
+ p.AddZone(host[1:])
+ continue
+ }
+ p.AddHost(host)
+ }
+}
+
+// AddIP specifies an IP address that will use the bypass proxy. Note that
+// this will only take effect if a literal IP address is dialed. A connection
+// to a named host will never match an IP.
+func (p *proxy_PerHost) AddIP(ip net.IP) {
+ p.bypassIPs = append(p.bypassIPs, ip)
+}
+
+// AddNetwork specifies an IP range that will use the bypass proxy. Note that
+// this will only take effect if a literal IP address is dialed. A connection
+// to a named host will never match.
+func (p *proxy_PerHost) AddNetwork(net *net.IPNet) {
+ p.bypassNetworks = append(p.bypassNetworks, net)
+}
+
+// AddZone specifies a DNS suffix that will use the bypass proxy. A zone of
+// "example.com" matches "example.com" and all of its subdomains.
+func (p *proxy_PerHost) AddZone(zone string) {
+ if strings.HasSuffix(zone, ".") {
+ zone = zone[:len(zone)-1]
+ }
+ if !strings.HasPrefix(zone, ".") {
+ zone = "." + zone
+ }
+ p.bypassZones = append(p.bypassZones, zone)
+}
+
+// AddHost specifies a host name that will use the bypass proxy.
+func (p *proxy_PerHost) AddHost(host string) {
+ if strings.HasSuffix(host, ".") {
+ host = host[:len(host)-1]
+ }
+ p.bypassHosts = append(p.bypassHosts, host)
+}
+
+// A Dialer is a means to establish a connection.
+type proxy_Dialer interface {
+ // Dial connects to the given address via the proxy.
+ Dial(network, addr string) (c net.Conn, err error)
+}
+
+// Auth contains authentication parameters that specific Dialers may require.
+type proxy_Auth struct {
+ User, Password string
+}
+
+// FromEnvironment returns the dialer specified by the proxy related variables in
+// the environment.
+func proxy_FromEnvironment() proxy_Dialer {
+ allProxy := proxy_allProxyEnv.Get()
+ if len(allProxy) == 0 {
+ return proxy_Direct
+ }
+
+ proxyURL, err := url.Parse(allProxy)
+ if err != nil {
+ return proxy_Direct
+ }
+ proxy, err := proxy_FromURL(proxyURL, proxy_Direct)
+ if err != nil {
+ return proxy_Direct
+ }
+
+ noProxy := proxy_noProxyEnv.Get()
+ if len(noProxy) == 0 {
+ return proxy
+ }
+
+ perHost := proxy_NewPerHost(proxy, proxy_Direct)
+ perHost.AddFromString(noProxy)
+ return perHost
+}
+
+// proxySchemes is a map from URL schemes to a function that creates a Dialer
+// from a URL with such a scheme.
+var proxy_proxySchemes map[string]func(*url.URL, proxy_Dialer) (proxy_Dialer, error)
+
+// RegisterDialerType takes a URL scheme and a function to generate Dialers from
+// a URL with that scheme and a forwarding Dialer. Registered schemes are used
+// by FromURL.
+func proxy_RegisterDialerType(scheme string, f func(*url.URL, proxy_Dialer) (proxy_Dialer, error)) {
+ if proxy_proxySchemes == nil {
+ proxy_proxySchemes = make(map[string]func(*url.URL, proxy_Dialer) (proxy_Dialer, error))
+ }
+ proxy_proxySchemes[scheme] = f
+}
+
+// FromURL returns a Dialer given a URL specification and an underlying
+// Dialer for it to make network requests.
+func proxy_FromURL(u *url.URL, forward proxy_Dialer) (proxy_Dialer, error) {
+ var auth *proxy_Auth
+ if u.User != nil {
+ auth = new(proxy_Auth)
+ auth.User = u.User.Username()
+ if p, ok := u.User.Password(); ok {
+ auth.Password = p
+ }
+ }
+
+ switch u.Scheme {
+ case "socks5":
+ return proxy_SOCKS5("tcp", u.Host, auth, forward)
+ }
+
+ // If the scheme doesn't match any of the built-in schemes, see if it
+ // was registered by another package.
+ if proxy_proxySchemes != nil {
+ if f, ok := proxy_proxySchemes[u.Scheme]; ok {
+ return f(u, forward)
+ }
+ }
+
+ return nil, errors.New("proxy: unknown scheme: " + u.Scheme)
+}
+
+var (
+ proxy_allProxyEnv = &proxy_envOnce{
+ names: []string{"ALL_PROXY", "all_proxy"},
+ }
+ proxy_noProxyEnv = &proxy_envOnce{
+ names: []string{"NO_PROXY", "no_proxy"},
+ }
+)
+
+// envOnce looks up an environment variable (optionally by multiple
+// names) once. It mitigates expensive lookups on some platforms
+// (e.g. Windows).
+// (Borrowed from net/http/transport.go)
+type proxy_envOnce struct {
+ names []string
+ once sync.Once
+ val string
+}
+
+func (e *proxy_envOnce) Get() string {
+ e.once.Do(e.init)
+ return e.val
+}
+
+func (e *proxy_envOnce) init() {
+ for _, n := range e.names {
+ e.val = os.Getenv(n)
+ if e.val != "" {
+ return
+ }
+ }
+}
+
+// SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given address
+// with an optional username and password. See RFC 1928 and RFC 1929.
+func proxy_SOCKS5(network, addr string, auth *proxy_Auth, forward proxy_Dialer) (proxy_Dialer, error) {
+ s := &proxy_socks5{
+ network: network,
+ addr: addr,
+ forward: forward,
+ }
+ if auth != nil {
+ s.user = auth.User
+ s.password = auth.Password
+ }
+
+ return s, nil
+}
+
+type proxy_socks5 struct {
+ user, password string
+ network, addr string
+ forward proxy_Dialer
+}
+
+const proxy_socks5Version = 5
+
+const (
+ proxy_socks5AuthNone = 0
+ proxy_socks5AuthPassword = 2
+)
+
+const proxy_socks5Connect = 1
+
+const (
+ proxy_socks5IP4 = 1
+ proxy_socks5Domain = 3
+ proxy_socks5IP6 = 4
+)
+
+var proxy_socks5Errors = []string{
+ "",
+ "general failure",
+ "connection forbidden",
+ "network unreachable",
+ "host unreachable",
+ "connection refused",
+ "TTL expired",
+ "command not supported",
+ "address type not supported",
+}
+
+// Dial connects to the address addr on the given network via the SOCKS5 proxy.
+func (s *proxy_socks5) Dial(network, addr string) (net.Conn, error) {
+ switch network {
+ case "tcp", "tcp6", "tcp4":
+ default:
+ return nil, errors.New("proxy: no support for SOCKS5 proxy connections of type " + network)
+ }
+
+ conn, err := s.forward.Dial(s.network, s.addr)
+ if err != nil {
+ return nil, err
+ }
+ if err := s.connect(conn, addr); err != nil {
+ conn.Close()
+ return nil, err
+ }
+ return conn, nil
+}
+
+// connect takes an existing connection to a socks5 proxy server,
+// and commands the server to extend that connection to target,
+// which must be a canonical address with a host and port.
+func (s *proxy_socks5) connect(conn net.Conn, target string) error {
+ host, portStr, err := net.SplitHostPort(target)
+ if err != nil {
+ return err
+ }
+
+ port, err := strconv.Atoi(portStr)
+ if err != nil {
+ return errors.New("proxy: failed to parse port number: " + portStr)
+ }
+ if port < 1 || port > 0xffff {
+ return errors.New("proxy: port number out of range: " + portStr)
+ }
+
+ // the size here is just an estimate
+ buf := make([]byte, 0, 6+len(host))
+
+ buf = append(buf, proxy_socks5Version)
+ if len(s.user) > 0 && len(s.user) < 256 && len(s.password) < 256 {
+ buf = append(buf, 2 /* num auth methods */, proxy_socks5AuthNone, proxy_socks5AuthPassword)
+ } else {
+ buf = append(buf, 1 /* num auth methods */, proxy_socks5AuthNone)
+ }
+
+ if _, err := conn.Write(buf); err != nil {
+ return errors.New("proxy: failed to write greeting to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+ }
+
+ if _, err := io.ReadFull(conn, buf[:2]); err != nil {
+ return errors.New("proxy: failed to read greeting from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+ }
+ if buf[0] != 5 {
+ return errors.New("proxy: SOCKS5 proxy at " + s.addr + " has unexpected version " + strconv.Itoa(int(buf[0])))
+ }
+ if buf[1] == 0xff {
+ return errors.New("proxy: SOCKS5 proxy at " + s.addr + " requires authentication")
+ }
+
+ // See RFC 1929
+ if buf[1] == proxy_socks5AuthPassword {
+ buf = buf[:0]
+ buf = append(buf, 1 /* password protocol version */)
+ buf = append(buf, uint8(len(s.user)))
+ buf = append(buf, s.user...)
+ buf = append(buf, uint8(len(s.password)))
+ buf = append(buf, s.password...)
+
+ if _, err := conn.Write(buf); err != nil {
+ return errors.New("proxy: failed to write authentication request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+ }
+
+ if _, err := io.ReadFull(conn, buf[:2]); err != nil {
+ return errors.New("proxy: failed to read authentication reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+ }
+
+ if buf[1] != 0 {
+ return errors.New("proxy: SOCKS5 proxy at " + s.addr + " rejected username/password")
+ }
+ }
+
+ buf = buf[:0]
+ buf = append(buf, proxy_socks5Version, proxy_socks5Connect, 0 /* reserved */)
+
+ if ip := net.ParseIP(host); ip != nil {
+ if ip4 := ip.To4(); ip4 != nil {
+ buf = append(buf, proxy_socks5IP4)
+ ip = ip4
+ } else {
+ buf = append(buf, proxy_socks5IP6)
+ }
+ buf = append(buf, ip...)
+ } else {
+ if len(host) > 255 {
+ return errors.New("proxy: destination host name too long: " + host)
+ }
+ buf = append(buf, proxy_socks5Domain)
+ buf = append(buf, byte(len(host)))
+ buf = append(buf, host...)
+ }
+ buf = append(buf, byte(port>>8), byte(port))
+
+ if _, err := conn.Write(buf); err != nil {
+ return errors.New("proxy: failed to write connect request to SOCKS5 proxy at " + s.addr + ": " + err.Error())
+ }
+
+ if _, err := io.ReadFull(conn, buf[:4]); err != nil {
+ return errors.New("proxy: failed to read connect reply from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+ }
+
+ failure := "unknown error"
+ if int(buf[1]) < len(proxy_socks5Errors) {
+ failure = proxy_socks5Errors[buf[1]]
+ }
+
+ if len(failure) > 0 {
+ return errors.New("proxy: SOCKS5 proxy at " + s.addr + " failed to connect: " + failure)
+ }
+
+ bytesToDiscard := 0
+ switch buf[3] {
+ case proxy_socks5IP4:
+ bytesToDiscard = net.IPv4len
+ case proxy_socks5IP6:
+ bytesToDiscard = net.IPv6len
+ case proxy_socks5Domain:
+ _, err := io.ReadFull(conn, buf[:1])
+ if err != nil {
+ return errors.New("proxy: failed to read domain length from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+ }
+ bytesToDiscard = int(buf[0])
+ default:
+ return errors.New("proxy: got unknown address type " + strconv.Itoa(int(buf[3])) + " from SOCKS5 proxy at " + s.addr)
+ }
+
+ if cap(buf) < bytesToDiscard {
+ buf = make([]byte, bytesToDiscard)
+ } else {
+ buf = buf[:bytesToDiscard]
+ }
+ if _, err := io.ReadFull(conn, buf); err != nil {
+ return errors.New("proxy: failed to read address from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+ }
+
+ // Also need to discard the port number
+ if _, err := io.ReadFull(conn, buf[:2]); err != nil {
+ return errors.New("proxy: failed to read port from SOCKS5 proxy at " + s.addr + ": " + err.Error())
+ }
+
+ return nil
+}
diff --git a/vendor/github.com/h2non/filetype/History.md b/vendor/github.com/h2non/filetype/History.md
index 58ca1555f..3c02be1fc 100644
--- a/vendor/github.com/h2non/filetype/History.md
+++ b/vendor/github.com/h2non/filetype/History.md
@@ -1,4 +1,26 @@
+v1.0.8 / 2019-02-10
+===================
+
+ * refactor(images): heic -> heif
+ * feat(docs): add heif format
+ * Merge pull request #60 from rikonor/master
+ * add heif/heic support
+ * fix(docs): dicom -> dcm
+ * feat: add dicom type
+ * Merge pull request #58 from Fentonz/master
+ * Merge pull request #59 from kmanley/master
+ * fix example; related to h2non/filetype#43
+ * Added DICOM type to archive
+
+
+v1.0.7 / 2019-02-09
+===================
+
+ * Merge pull request #56 from akupila/wasm
+ * add wasm to readme
+ * detect wasm file type
+
v1.0.6 / 2019-01-22
===================
diff --git a/vendor/github.com/h2non/filetype/README.md b/vendor/github.com/h2non/filetype/README.md
index d816dc8ea..2968ae244 100644
--- a/vendor/github.com/h2non/filetype/README.md
+++ b/vendor/github.com/h2non/filetype/README.md
@@ -50,9 +50,9 @@ import (
func main() {
buf, _ := ioutil.ReadFile("sample.jpg")
- kind, unknown := filetype.Match(buf)
- if unknown != nil {
- fmt.Printf("Unknown: %s", unknown)
+ kind, _ := filetype.Match(buf)
+ if kind == filetype.Unknown {
+ fmt.Println("Unknown file type")
return
}
@@ -192,6 +192,7 @@ func main() {
- **cr2** - `image/x-canon-cr2`
- **tif** - `image/tiff`
- **bmp** - `image/bmp`
+- **heif** - `image/heif`
- **jxr** - `image/vnd.ms-photo`
- **psd** - `image/vnd.adobe.photoshop`
- **ico** - `image/x-icon`
@@ -245,6 +246,7 @@ func main() {
- **lz** - `application/x-lzip`
- **rpm** - `application/x-rpm`
- **elf** - `application/x-executable`
+- **dcm** - `application/dicom`
#### Documents
@@ -262,6 +264,10 @@ func main() {
- **ttf** - `application/font-sfnt`
- **otf** - `application/font-sfnt`
+#### Application
+
+- **wasm** - `application/wasm`
+
## Benchmarks
Measured using [real files](https://github.com/h2non/filetype/tree/master/fixtures).
diff --git a/vendor/github.com/h2non/filetype/matchers/application.go b/vendor/github.com/h2non/filetype/matchers/application.go
new file mode 100644
index 000000000..f482062d6
--- /dev/null
+++ b/vendor/github.com/h2non/filetype/matchers/application.go
@@ -0,0 +1,20 @@
+package matchers
+
+var (
+ TypeWasm = newType("wasm", "application/wasm")
+)
+
+var Application = Map{
+ TypeWasm: Wasm,
+}
+
+// Wasm detects a Web Assembly 1.0 filetype.
+func Wasm(buf []byte) bool {
+ // WASM has starts with `\0asm`, followed by the version.
+ // http://webassembly.github.io/spec/core/binary/modules.html#binary-magic
+ return len(buf) >= 8 &&
+ buf[0] == 0x00 && buf[1] == 0x61 &&
+ buf[2] == 0x73 && buf[3] == 0x6D &&
+ buf[4] == 0x01 && buf[5] == 0x00 &&
+ buf[6] == 0x00 && buf[7] == 0x00
+}
diff --git a/vendor/github.com/h2non/filetype/matchers/archive.go b/vendor/github.com/h2non/filetype/matchers/archive.go
index 9c1270ffb..0e88af144 100644
--- a/vendor/github.com/h2non/filetype/matchers/archive.go
+++ b/vendor/github.com/h2non/filetype/matchers/archive.go
@@ -25,6 +25,7 @@ var (
TypeLz = newType("lz", "application/x-lzip")
TypeRpm = newType("rpm", "application/x-rpm")
TypeElf = newType("elf", "application/x-executable")
+ TypeDcm = newType("dcm", "application/dicom")
)
var Archive = Map{
@@ -52,6 +53,7 @@ var Archive = Map{
TypeLz: Lz,
TypeRpm: Rpm,
TypeElf: Elf,
+ TypeDcm: Dcm,
}
func Epub(buf []byte) bool {
@@ -215,3 +217,9 @@ func Elf(buf []byte) bool {
buf[0] == 0x7F && buf[1] == 0x45 &&
buf[2] == 0x4C && buf[3] == 0x46
}
+
+func Dcm(buf []byte) bool {
+ return len(buf) > 131 &&
+ buf[128] == 0x44 && buf[129] == 0x49 &&
+ buf[130] == 0x43 && buf[131] == 0x4D
+}
diff --git a/vendor/github.com/h2non/filetype/matchers/image.go b/vendor/github.com/h2non/filetype/matchers/image.go
index edb7fbc70..5405477a6 100644
--- a/vendor/github.com/h2non/filetype/matchers/image.go
+++ b/vendor/github.com/h2non/filetype/matchers/image.go
@@ -1,5 +1,7 @@
package matchers
+import "github.com/h2non/filetype/matchers/isobmff"
+
var (
TypeJpeg = newType("jpg", "image/jpeg")
TypeJpeg2000 = newType("jp2", "image/jp2")
@@ -12,6 +14,7 @@ var (
TypeJxr = newType("jxr", "image/vnd.ms-photo")
TypePsd = newType("psd", "image/vnd.adobe.photoshop")
TypeIco = newType("ico", "image/x-icon")
+ TypeHeif = newType("heif", "image/heif")
)
var Image = Map{
@@ -26,6 +29,7 @@ var Image = Map{
TypeJxr: Jxr,
TypePsd: Psd,
TypeIco: Ico,
+ TypeHeif: Heif,
}
func Jpeg(buf []byte) bool {
@@ -106,3 +110,24 @@ func Ico(buf []byte) bool {
buf[0] == 0x00 && buf[1] == 0x00 &&
buf[2] == 0x01 && buf[3] == 0x00
}
+
+func Heif(buf []byte) bool {
+ if !isobmff.IsISOBMFF(buf) {
+ return false
+ }
+
+ majorBrand, _, compatibleBrands := isobmff.GetFtyp(buf)
+ if majorBrand == "heic" {
+ return true
+ }
+
+ if majorBrand == "mif1" || majorBrand == "msf1" {
+ for _, compatibleBrand := range compatibleBrands {
+ if compatibleBrand == "heic" {
+ return true
+ }
+ }
+ }
+
+ return false
+}
diff --git a/vendor/github.com/h2non/filetype/matchers/isobmff/isobmff.go b/vendor/github.com/h2non/filetype/matchers/isobmff/isobmff.go
new file mode 100644
index 000000000..963e80568
--- /dev/null
+++ b/vendor/github.com/h2non/filetype/matchers/isobmff/isobmff.go
@@ -0,0 +1,31 @@
+package isobmff
+
+import "encoding/binary"
+
+// IsISOBMFF checks whether the given buffer represents ISO Base Media File Format data
+func IsISOBMFF(buf []byte) bool {
+ if len(buf) < 16 || string(buf[4:8]) != "ftyp" {
+ return false
+ }
+
+ if ftypLength := binary.BigEndian.Uint32(buf[0:4]); len(buf) < int(ftypLength) {
+ return false
+ }
+
+ return true
+}
+
+// GetFtyp returns the major brand, minor version and compatible brands of the ISO-BMFF data
+func GetFtyp(buf []byte) (string, string, []string) {
+ ftypLength := binary.BigEndian.Uint32(buf[0:4])
+
+ majorBrand := string(buf[8:12])
+ minorVersion := string(buf[12:16])
+
+ compatibleBrands := []string{}
+ for i := 16; i < int(ftypLength); i += 4 {
+ compatibleBrands = append(compatibleBrands, string(buf[i:i+4]))
+ }
+
+ return majorBrand, minorVersion, compatibleBrands
+}
diff --git a/vendor/github.com/h2non/filetype/matchers/matchers.go b/vendor/github.com/h2non/filetype/matchers/matchers.go
index e9462df8e..20d74d080 100644
--- a/vendor/github.com/h2non/filetype/matchers/matchers.go
+++ b/vendor/github.com/h2non/filetype/matchers/matchers.go
@@ -47,5 +47,5 @@ func register(matchers ...Map) {
func init() {
// Arguments order is intentional
// Archive files will be checked last due to prepend above in func NewMatcher
- register(Archive, Document, Font, Audio, Video, Image)
+ register(Archive, Document, Font, Audio, Video, Image, Application)
}
diff --git a/vendor/github.com/h2non/filetype/version.go b/vendor/github.com/h2non/filetype/version.go
index 20a4b26e3..be84ec228 100644
--- a/vendor/github.com/h2non/filetype/version.go
+++ b/vendor/github.com/h2non/filetype/version.go
@@ -1,4 +1,4 @@
package filetype
// Version exposes the current package version.
-const Version = "1.0.6"
+const Version = "1.0.8"
diff --git a/vendor/github.com/hashicorp/errwrap/LICENSE b/vendor/github.com/hashicorp/errwrap/LICENSE
new file mode 100644
index 000000000..c33dcc7c9
--- /dev/null
+++ b/vendor/github.com/hashicorp/errwrap/LICENSE
@@ -0,0 +1,354 @@
+Mozilla Public License, version 2.0
+
+1. Definitions
+
+1.1. “Contributor”
+
+ means each individual or legal entity that creates, contributes to the
+ creation of, or owns Covered Software.
+
+1.2. “Contributor Version”
+
+ means the combination of the Contributions of others (if any) used by a
+ Contributor and that particular Contributor’s Contribution.
+
+1.3. “Contribution”
+
+ means Covered Software of a particular Contributor.
+
+1.4. “Covered Software”
+
+ means Source Code Form to which the initial Contributor has attached the
+ notice in Exhibit A, the Executable Form of such Source Code Form, and
+ Modifications of such Source Code Form, in each case including portions
+ thereof.
+
+1.5. “Incompatible With Secondary Licenses”
+ means
+
+ a. that the initial Contributor has attached the notice described in
+ Exhibit B to the Covered Software; or
+
+ b. that the Covered Software was made available under the terms of version
+ 1.1 or earlier of the License, but not also under the terms of a
+ Secondary License.
+
+1.6. “Executable Form”
+
+ means any form of the work other than Source Code Form.
+
+1.7. “Larger Work”
+
+ means a work that combines Covered Software with other material, in a separate
+ file or files, that is not Covered Software.
+
+1.8. “License”
+
+ means this document.
+
+1.9. “Licensable”
+
+ means having the right to grant, to the maximum extent possible, whether at the
+ time of the initial grant or subsequently, any and all of the rights conveyed by
+ this License.
+
+1.10. “Modifications”
+
+ means any of the following:
+
+ a. any file in Source Code Form that results from an addition to, deletion
+ from, or modification of the contents of Covered Software; or
+
+ b. any new file in Source Code Form that contains any Covered Software.
+
+1.11. “Patent Claims” of a Contributor
+
+ means any patent claim(s), including without limitation, method, process,
+ and apparatus claims, in any patent Licensable by such Contributor that
+ would be infringed, but for the grant of the License, by the making,
+ using, selling, offering for sale, having made, import, or transfer of
+ either its Contributions or its Contributor Version.
+
+1.12. “Secondary License”
+
+ means either the GNU General Public License, Version 2.0, the GNU Lesser
+ General Public License, Version 2.1, the GNU Affero General Public
+ License, Version 3.0, or any later versions of those licenses.
+
+1.13. “Source Code Form”
+
+ means the form of the work preferred for making modifications.
+
+1.14. “You” (or “Your”)
+
+ means an individual or a legal entity exercising rights under this
+ License. For legal entities, “You” includes any entity that controls, is
+ controlled by, or is under common control with You. For purposes of this
+ definition, “control” means (a) the power, direct or indirect, to cause
+ the direction or management of such entity, whether by contract or
+ otherwise, or (b) ownership of more than fifty percent (50%) of the
+ outstanding shares or beneficial ownership of such entity.
+
+
+2. License Grants and Conditions
+
+2.1. Grants
+
+ Each Contributor hereby grants You a world-wide, royalty-free,
+ non-exclusive license:
+
+ a. under intellectual property rights (other than patent or trademark)
+ Licensable by such Contributor to use, reproduce, make available,
+ modify, display, perform, distribute, and otherwise exploit its
+ Contributions, either on an unmodified basis, with Modifications, or as
+ part of a Larger Work; and
+
+ b. under Patent Claims of such Contributor to make, use, sell, offer for
+ sale, have made, import, and otherwise transfer either its Contributions
+ or its Contributor Version.
+
+2.2. Effective Date
+
+ The licenses granted in Section 2.1 with respect to any Contribution become
+ effective for each Contribution on the date the Contributor first distributes
+ such Contribution.
+
+2.3. Limitations on Grant Scope
+
+ The licenses granted in this Section 2 are the only rights granted under this
+ License. No additional rights or licenses will be implied from the distribution
+ or licensing of Covered Software under this License. Notwithstanding Section
+ 2.1(b) above, no patent license is granted by a Contributor:
+
+ a. for any code that a Contributor has removed from Covered Software; or
+
+ b. for infringements caused by: (i) Your and any other third party’s
+ modifications of Covered Software, or (ii) the combination of its
+ Contributions with other software (except as part of its Contributor
+ Version); or
+
+ c. under Patent Claims infringed by Covered Software in the absence of its
+ Contributions.
+
+ This License does not grant any rights in the trademarks, service marks, or
+ logos of any Contributor (except as may be necessary to comply with the
+ notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+ No Contributor makes additional grants as a result of Your choice to
+ distribute the Covered Software under a subsequent version of this License
+ (see Section 10.2) or under the terms of a Secondary License (if permitted
+ under the terms of Section 3.3).
+
+2.5. Representation
+
+ Each Contributor represents that the Contributor believes its Contributions
+ are its original creation(s) or it has sufficient rights to grant the
+ rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+ This License is not intended to limit any rights You have under applicable
+ copyright doctrines of fair use, fair dealing, or other equivalents.
+
+2.7. Conditions
+
+ Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
+ Section 2.1.
+
+
+3. Responsibilities
+
+3.1. Distribution of Source Form
+
+ All distribution of Covered Software in Source Code Form, including any
+ Modifications that You create or to which You contribute, must be under the
+ terms of this License. You must inform recipients that the Source Code Form
+ of the Covered Software is governed by the terms of this License, and how
+ they can obtain a copy of this License. You may not attempt to alter or
+ restrict the recipients’ rights in the Source Code Form.
+
+3.2. Distribution of Executable Form
+
+ If You distribute Covered Software in Executable Form then:
+
+ a. such Covered Software must also be made available in Source Code Form,
+ as described in Section 3.1, and You must inform recipients of the
+ Executable Form how they can obtain a copy of such Source Code Form by
+ reasonable means in a timely manner, at a charge no more than the cost
+ of distribution to the recipient; and
+
+ b. You may distribute such Executable Form under the terms of this License,
+ or sublicense it under different terms, provided that the license for
+ the Executable Form does not attempt to limit or alter the recipients’
+ rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+ You may create and distribute a Larger Work under terms of Your choice,
+ provided that You also comply with the requirements of this License for the
+ Covered Software. If the Larger Work is a combination of Covered Software
+ with a work governed by one or more Secondary Licenses, and the Covered
+ Software is not Incompatible With Secondary Licenses, this License permits
+ You to additionally distribute such Covered Software under the terms of
+ such Secondary License(s), so that the recipient of the Larger Work may, at
+ their option, further distribute the Covered Software under the terms of
+ either this License or such Secondary License(s).
+
+3.4. Notices
+
+ You may not remove or alter the substance of any license notices (including
+ copyright notices, patent notices, disclaimers of warranty, or limitations
+ of liability) contained within the Source Code Form of the Covered
+ Software, except that You may alter any license notices to the extent
+ required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+ You may choose to offer, and to charge a fee for, warranty, support,
+ indemnity or liability obligations to one or more recipients of Covered
+ Software. However, You may do so only on Your own behalf, and not on behalf
+ of any Contributor. You must make it absolutely clear that any such
+ warranty, support, indemnity, or liability obligation is offered by You
+ alone, and You hereby agree to indemnify every Contributor for any
+ liability incurred by such Contributor as a result of warranty, support,
+ indemnity or liability terms You offer. You may include additional
+ disclaimers of warranty and limitations of liability specific to any
+ jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+
+ If it is impossible for You to comply with any of the terms of this License
+ with respect to some or all of the Covered Software due to statute, judicial
+ order, or regulation then You must: (a) comply with the terms of this License
+ to the maximum extent possible; and (b) describe the limitations and the code
+ they affect. Such description must be placed in a text file included with all
+ distributions of the Covered Software under this License. Except to the
+ extent prohibited by statute or regulation, such description must be
+ sufficiently detailed for a recipient of ordinary skill to be able to
+ understand it.
+
+5. Termination
+
+5.1. The rights granted under this License will terminate automatically if You
+ fail to comply with any of its terms. However, if You become compliant,
+ then the rights granted under this License from a particular Contributor
+ are reinstated (a) provisionally, unless and until such Contributor
+ explicitly and finally terminates Your grants, and (b) on an ongoing basis,
+ if such Contributor fails to notify You of the non-compliance by some
+ reasonable means prior to 60 days after You have come back into compliance.
+ Moreover, Your grants from a particular Contributor are reinstated on an
+ ongoing basis if such Contributor notifies You of the non-compliance by
+ some reasonable means, this is the first time You have received notice of
+ non-compliance with this License from such Contributor, and You become
+ compliant prior to 30 days after Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+ infringement claim (excluding declaratory judgment actions, counter-claims,
+ and cross-claims) alleging that a Contributor Version directly or
+ indirectly infringes any patent, then the rights granted to You by any and
+ all Contributors for the Covered Software under Section 2.1 of this License
+ shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
+ license agreements (excluding distributors and resellers) which have been
+ validly granted by You or Your distributors under this License prior to
+ termination shall survive termination.
+
+6. Disclaimer of Warranty
+
+ Covered Software is provided under this License on an “as is” basis, without
+ warranty of any kind, either expressed, implied, or statutory, including,
+ without limitation, warranties that the Covered Software is free of defects,
+ merchantable, fit for a particular purpose or non-infringing. The entire
+ risk as to the quality and performance of the Covered Software is with You.
+ Should any Covered Software prove defective in any respect, You (not any
+ Contributor) assume the cost of any necessary servicing, repair, or
+ correction. This disclaimer of warranty constitutes an essential part of this
+ License. No use of any Covered Software is authorized under this License
+ except under this disclaimer.
+
+7. Limitation of Liability
+
+ Under no circumstances and under no legal theory, whether tort (including
+ negligence), contract, or otherwise, shall any Contributor, or anyone who
+ distributes Covered Software as permitted above, be liable to You for any
+ direct, indirect, special, incidental, or consequential damages of any
+ character including, without limitation, damages for lost profits, loss of
+ goodwill, work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses, even if such party shall have been
+ informed of the possibility of such damages. This limitation of liability
+ shall not apply to liability for death or personal injury resulting from such
+ party’s negligence to the extent applicable law prohibits such limitation.
+ Some jurisdictions do not allow the exclusion or limitation of incidental or
+ consequential damages, so this exclusion and limitation may not apply to You.
+
+8. Litigation
+
+ Any litigation relating to this License may be brought only in the courts of
+ a jurisdiction where the defendant maintains its principal place of business
+ and such litigation shall be governed by laws of that jurisdiction, without
+ reference to its conflict-of-law provisions. Nothing in this Section shall
+ prevent a party’s ability to bring cross-claims or counter-claims.
+
+9. Miscellaneous
+
+ This License represents the complete agreement concerning the subject matter
+ hereof. If any provision of this License is held to be unenforceable, such
+ provision shall be reformed only to the extent necessary to make it
+ enforceable. Any law or regulation which provides that the language of a
+ contract shall be construed against the drafter shall not be used to construe
+ this License against a Contributor.
+
+
+10. Versions of the License
+
+10.1. New Versions
+
+ Mozilla Foundation is the license steward. Except as provided in Section
+ 10.3, no one other than the license steward has the right to modify or
+ publish new versions of this License. Each version will be given a
+ distinguishing version number.
+
+10.2. Effect of New Versions
+
+ You may distribute the Covered Software under the terms of the version of
+ the License under which You originally received the Covered Software, or
+ under the terms of any subsequent version published by the license
+ steward.
+
+10.3. Modified Versions
+
+ If you create software not governed by this License, and you want to
+ create a new license for such software, you may create and use a modified
+ version of this License if you rename the license and remove any
+ references to the name of the license steward (except to note that such
+ modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
+ If You choose to distribute Source Code Form that is Incompatible With
+ Secondary Licenses under the terms of this version of the License, the
+ notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+
+ This Source Code Form is subject to the
+ terms of the Mozilla Public License, v.
+ 2.0. If a copy of the MPL was not
+ distributed with this file, You can
+ obtain one at
+ http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular file, then
+You may include the notice in a location (such as a LICENSE file in a relevant
+directory) where a recipient would be likely to look for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - “Incompatible With Secondary Licenses” Notice
+
+ This Source Code Form is “Incompatible
+ With Secondary Licenses”, as defined by
+ the Mozilla Public License, v. 2.0.
+
diff --git a/vendor/github.com/hashicorp/errwrap/README.md b/vendor/github.com/hashicorp/errwrap/README.md
new file mode 100644
index 000000000..444df08f8
--- /dev/null
+++ b/vendor/github.com/hashicorp/errwrap/README.md
@@ -0,0 +1,89 @@
+# errwrap
+
+`errwrap` is a package for Go that formalizes the pattern of wrapping errors
+and checking if an error contains another error.
+
+There is a common pattern in Go of taking a returned `error` value and
+then wrapping it (such as with `fmt.Errorf`) before returning it. The problem
+with this pattern is that you completely lose the original `error` structure.
+
+Arguably the _correct_ approach is that you should make a custom structure
+implementing the `error` interface, and have the original error as a field
+on that structure, such [as this example](http://golang.org/pkg/os/#PathError).
+This is a good approach, but you have to know the entire chain of possible
+rewrapping that happens, when you might just care about one.
+
+`errwrap` formalizes this pattern (it doesn't matter what approach you use
+above) by giving a single interface for wrapping errors, checking if a specific
+error is wrapped, and extracting that error.
+
+## Installation and Docs
+
+Install using `go get github.com/hashicorp/errwrap`.
+
+Full documentation is available at
+http://godoc.org/github.com/hashicorp/errwrap
+
+## Usage
+
+#### Basic Usage
+
+Below is a very basic example of its usage:
+
+```go
+// A function that always returns an error, but wraps it, like a real
+// function might.
+func tryOpen() error {
+ _, err := os.Open("/i/dont/exist")
+ if err != nil {
+ return errwrap.Wrapf("Doesn't exist: {{err}}", err)
+ }
+
+ return nil
+}
+
+func main() {
+ err := tryOpen()
+
+ // We can use the Contains helpers to check if an error contains
+ // another error. It is safe to do this with a nil error, or with
+ // an error that doesn't even use the errwrap package.
+ if errwrap.Contains(err, "does not exist") {
+ // Do something
+ }
+ if errwrap.ContainsType(err, new(os.PathError)) {
+ // Do something
+ }
+
+ // Or we can use the associated `Get` functions to just extract
+ // a specific error. This would return nil if that specific error doesn't
+ // exist.
+ perr := errwrap.GetType(err, new(os.PathError))
+}
+```
+
+#### Custom Types
+
+If you're already making custom types that properly wrap errors, then
+you can get all the functionality of `errwraps.Contains` and such by
+implementing the `Wrapper` interface with just one function. Example:
+
+```go
+type AppError {
+ Code ErrorCode
+ Err error
+}
+
+func (e *AppError) WrappedErrors() []error {
+ return []error{e.Err}
+}
+```
+
+Now this works:
+
+```go
+err := &AppError{Err: fmt.Errorf("an error")}
+if errwrap.ContainsType(err, fmt.Errorf("")) {
+ // This will work!
+}
+```
diff --git a/vendor/github.com/hashicorp/errwrap/errwrap.go b/vendor/github.com/hashicorp/errwrap/errwrap.go
new file mode 100644
index 000000000..a733bef18
--- /dev/null
+++ b/vendor/github.com/hashicorp/errwrap/errwrap.go
@@ -0,0 +1,169 @@
+// Package errwrap implements methods to formalize error wrapping in Go.
+//
+// All of the top-level functions that take an `error` are built to be able
+// to take any error, not just wrapped errors. This allows you to use errwrap
+// without having to type-check and type-cast everywhere.
+package errwrap
+
+import (
+ "errors"
+ "reflect"
+ "strings"
+)
+
+// WalkFunc is the callback called for Walk.
+type WalkFunc func(error)
+
+// Wrapper is an interface that can be implemented by custom types to
+// have all the Contains, Get, etc. functions in errwrap work.
+//
+// When Walk reaches a Wrapper, it will call the callback for every
+// wrapped error in addition to the wrapper itself. Since all the top-level
+// functions in errwrap use Walk, this means that all those functions work
+// with your custom type.
+type Wrapper interface {
+ WrappedErrors() []error
+}
+
+// Wrap defines that outer wraps inner, returning an error type that
+// can be cleanly used with the other methods in this package, such as
+// Contains, GetAll, etc.
+//
+// This function won't modify the error message at all (the outer message
+// will be used).
+func Wrap(outer, inner error) error {
+ return &wrappedError{
+ Outer: outer,
+ Inner: inner,
+ }
+}
+
+// Wrapf wraps an error with a formatting message. This is similar to using
+// `fmt.Errorf` to wrap an error. If you're using `fmt.Errorf` to wrap
+// errors, you should replace it with this.
+//
+// format is the format of the error message. The string '{{err}}' will
+// be replaced with the original error message.
+func Wrapf(format string, err error) error {
+ outerMsg := "