Use mod vendor for vendored directory (backwards compatible)

14 files changed, 116 insertions, 1641 deletions

diff --git a/vendor/github.com/gorilla/websocket/.gitignore b/vendor/github.com/gorilla/websocket/.gitignore
new file mode 100644
index 00000000..ac710204
--- /dev/null
+++ b/vendor/github.com/gorilla/websocket/.gitignore
@@ -0,0 +1,25 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+
+.idea/
+*.iml
\ No newline at end of file
diff --git a/vendor/github.com/gorilla/websocket/.travis.yml b/vendor/github.com/gorilla/websocket/.travis.yml
new file mode 100644
index 00000000..3d8d29cf
--- /dev/null
+++ b/vendor/github.com/gorilla/websocket/.travis.yml
@@ -0,0 +1,19 @@
+language: go
+sudo: false
+
+matrix:
+  include:
+    - go: 1.4
+    - go: 1.5
+    - go: 1.6
+    - go: 1.7
+    - go: 1.8
+    - go: tip
+  allow_failures:
+    - go: tip
+
+script:
+  - go get -t -v ./...
+  - diff -u <(echo -n) <(gofmt -d .)
+  - go vet $(go list ./... | grep -v /vendor/)
+  - go test -v -race ./...
diff --git a/vendor/github.com/gorilla/websocket/AUTHORS b/vendor/github.com/gorilla/websocket/AUTHORS
new file mode 100644
index 00000000..b003eca0
--- /dev/null
+++ b/vendor/github.com/gorilla/websocket/AUTHORS
@@ -0,0 +1,8 @@
+# This is the official list of Gorilla WebSocket authors for copyright
+# purposes.
+#
+# Please keep the list sorted.
+
+Gary Burd <gary@beagledreams.com>
+Joachim Bauch <mail@joachim-bauch.de>
+
diff --git a/vendor/github.com/gorilla/websocket/README.md b/vendor/github.com/gorilla/websocket/README.md
new file mode 100644
index 00000000..33c3d2be
--- /dev/null
+++ b/vendor/github.com/gorilla/websocket/README.md
@@ -0,0 +1,64 @@
+# Gorilla WebSocket
+
+Gorilla WebSocket is a [Go](http://golang.org/) implementation of the
+[WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.
+
+[![Build Status](https://travis-ci.org/gorilla/websocket.svg?branch=master)](https://travis-ci.org/gorilla/websocket)
+[![GoDoc](https://godoc.org/github.com/gorilla/websocket?status.svg)](https://godoc.org/github.com/gorilla/websocket)
+
+### Documentation
+
+* [API Reference](http://godoc.org/github.com/gorilla/websocket)
+* [Chat example](https://github.com/gorilla/websocket/tree/master/examples/chat)
+* [Command example](https://github.com/gorilla/websocket/tree/master/examples/command)
+* [Client and server example](https://github.com/gorilla/websocket/tree/master/examples/echo)
+* [File watch example](https://github.com/gorilla/websocket/tree/master/examples/filewatch)
+
+### Status
+
+The Gorilla WebSocket package provides a complete and tested implementation of
+the [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol. The
+package API is stable.
+
+### Installation
+
+    go get github.com/gorilla/websocket
+
+### Protocol Compliance
+
+The Gorilla WebSocket package passes the server tests in the [Autobahn Test
+Suite](http://autobahn.ws/testsuite) using the application in the [examples/autobahn
+subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn).
+
+### Gorilla WebSocket compared with other packages
+
+<table>
+<tr>
+<th></th>
+<th><a href="http://godoc.org/github.com/gorilla/websocket">github.com/gorilla</a></th>
+<th><a href="http://godoc.org/golang.org/x/net/websocket">golang.org/x/net</a></th>
+</tr>
+<tr>
+<tr><td colspan="3"><a href="http://tools.ietf.org/html/rfc6455">RFC 6455</a> Features</td></tr>
+<tr><td>Passes <a href="http://autobahn.ws/testsuite/">Autobahn Test Suite</a></td><td><a href="https://github.com/gorilla/websocket/tree/master/examples/autobahn">Yes</a></td><td>No</td></tr>
+<tr><td>Receive <a href="https://tools.ietf.org/html/rfc6455#section-5.4">fragmented</a> message<td>Yes</td><td><a href="https://code.google.com/p/go/issues/detail?id=7632">No</a>, see note 1</td></tr>
+<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.1">close</a> message</td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td><a href="https://code.google.com/p/go/issues/detail?id=4588">No</a></td></tr>
+<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.2">pings</a> and receive <a href="https://tools.ietf.org/html/rfc6455#section-5.5.3">pongs</a></td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td>No</td></tr>
+<tr><td>Get the <a href="https://tools.ietf.org/html/rfc6455#section-5.6">type</a> of a received data message</td><td>Yes</td><td>Yes, see note 2</td></tr>
+<tr><td colspan="3">Other Features</tr></td>
+<tr><td><a href="https://tools.ietf.org/html/rfc7692">Compression Extensions</a></td><td>Experimental</td><td>No</td></tr>
+<tr><td>Read message using io.Reader</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextReader">Yes</a></td><td>No, see note 3</td></tr>
+<tr><td>Write message using io.WriteCloser</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextWriter">Yes</a></td><td>No, see note 3</td></tr>
+</table>
+
+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
+   a [Codec marshal](http://godoc.org/golang.org/x/net/websocket#Codec.Marshal)
+   function.
+3. The go.net io.Reader and io.Writer operate across WebSocket frame boundaries.
+  Read returns when the input buffer is full or a frame boundary is
+  encountered. Each call to Write sends a single frame message. The Gorilla
+  io.Reader and io.WriteCloser operate on a single WebSocket message.
+
diff --git a/vendor/github.com/gorilla/websocket/examples/autobahn/server.go b/vendor/github.com/gorilla/websocket/examples/autobahn/server.go
deleted file mode 100644
index 3db880f9..00000000
--- a/vendor/github.com/gorilla/websocket/examples/autobahn/server.go
+++ /dev/null
@@ -1,265 +0,0 @@
-// Copyright 2013 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.
-
-// Command server is a test server for the Autobahn WebSockets Test Suite.
-package main
-
-import (
-	"errors"
-	"flag"
-	"io"
-	"log"
-	"net/http"
-	"time"
-	"unicode/utf8"
-
-	"github.com/gorilla/websocket"
-)
-
-var upgrader = websocket.Upgrader{
-	ReadBufferSize:    4096,
-	WriteBufferSize:   4096,
-	EnableCompression: true,
-	CheckOrigin: func(r *http.Request) bool {
-		return true
-	},
-}
-
-// echoCopy echoes messages from the client using io.Copy.
-func echoCopy(w http.ResponseWriter, r *http.Request, writerOnly bool) {
-	conn, err := upgrader.Upgrade(w, r, nil)
-	if err != nil {
-		log.Println("Upgrade:", err)
-		return
-	}
-	defer conn.Close()
-	for {
-		mt, r, err := conn.NextReader()
-		if err != nil {
-			if err != io.EOF {
-				log.Println("NextReader:", err)
-			}
-			return
-		}
-		if mt == websocket.TextMessage {
-			r = &validator{r: r}
-		}
-		w, err := conn.NextWriter(mt)
-		if err != nil {
-			log.Println("NextWriter:", err)
-			return
-		}
-		if mt == websocket.TextMessage {
-			r = &validator{r: r}
-		}
-		if writerOnly {
-			_, err = io.Copy(struct{ io.Writer }{w}, r)
-		} else {
-			_, err = io.Copy(w, r)
-		}
-		if err != nil {
-			if err == errInvalidUTF8 {
-				conn.WriteControl(websocket.CloseMessage,
-					websocket.FormatCloseMessage(websocket.CloseInvalidFramePayloadData, ""),
-					time.Time{})
-			}
-			log.Println("Copy:", err)
-			return
-		}
-		err = w.Close()
-		if err != nil {
-			log.Println("Close:", err)
-			return
-		}
-	}
-}
-
-func echoCopyWriterOnly(w http.ResponseWriter, r *http.Request) {
-	echoCopy(w, r, true)
-}
-
-func echoCopyFull(w http.ResponseWriter, r *http.Request) {
-	echoCopy(w, r, false)
-}
-
-// echoReadAll echoes messages from the client by reading the entire message
-// with ioutil.ReadAll.
-func echoReadAll(w http.ResponseWriter, r *http.Request, writeMessage, writePrepared bool) {
-	conn, err := upgrader.Upgrade(w, r, nil)
-	if err != nil {
-		log.Println("Upgrade:", err)
-		return
-	}
-	defer conn.Close()
-	for {
-		mt, b, err := conn.ReadMessage()
-		if err != nil {
-			if err != io.EOF {
-				log.Println("NextReader:", err)
-			}
-			return
-		}
-		if mt == websocket.TextMessage {
-			if !utf8.Valid(b) {
-				conn.WriteControl(websocket.CloseMessage,
-					websocket.FormatCloseMessage(websocket.CloseInvalidFramePayloadData, ""),
-					time.Time{})
-				log.Println("ReadAll: invalid utf8")
-			}
-		}
-		if writeMessage {
-			if !writePrepared {
-				err = conn.WriteMessage(mt, b)
-				if err != nil {
-					log.Println("WriteMessage:", err)
-				}
-			} else {
-				pm, err := websocket.NewPreparedMessage(mt, b)
-				if err != nil {
-					log.Println("NewPreparedMessage:", err)
-					return
-				}
-				err = conn.WritePreparedMessage(pm)
-				if err != nil {
-					log.Println("WritePreparedMessage:", err)
-				}
-			}
-		} else {
-			w, err := conn.NextWriter(mt)
-			if err != nil {
-				log.Println("NextWriter:", err)
-				return
-			}
-			if _, err := w.Write(b); err != nil {
-				log.Println("Writer:", err)
-				return
-			}
-			if err := w.Close(); err != nil {
-				log.Println("Close:", err)
-				return
-			}
-		}
-	}
-}
-
-func echoReadAllWriter(w http.ResponseWriter, r *http.Request) {
-	echoReadAll(w, r, false, false)
-}
-
-func echoReadAllWriteMessage(w http.ResponseWriter, r *http.Request) {
-	echoReadAll(w, r, true, false)
-}
-
-func echoReadAllWritePreparedMessage(w http.ResponseWriter, r *http.Request) {
-	echoReadAll(w, r, true, true)
-}
-
-func serveHome(w http.ResponseWriter, r *http.Request) {
-	if r.URL.Path != "/" {
-		http.Error(w, "Not found.", 404)
-		return
-	}
-	if r.Method != "GET" {
-		http.Error(w, "Method not allowed", 405)
-		return
-	}
-	w.Header().Set("Content-Type", "text/html; charset=utf-8")
-	io.WriteString(w, "<html><body>Echo Server</body></html>")
-}
-
-var addr = flag.String("addr", ":9000", "http service address")
-
-func main() {
-	flag.Parse()
-	http.HandleFunc("/", serveHome)
-	http.HandleFunc("/c", echoCopyWriterOnly)
-	http.HandleFunc("/f", echoCopyFull)
-	http.HandleFunc("/r", echoReadAllWriter)
-	http.HandleFunc("/m", echoReadAllWriteMessage)
-	http.HandleFunc("/p", echoReadAllWritePreparedMessage)
-	err := http.ListenAndServe(*addr, nil)
-	if err != nil {
-		log.Fatal("ListenAndServe: ", err)
-	}
-}
-
-type validator struct {
-	state int
-	x     rune
-	r     io.Reader
-}
-
-var errInvalidUTF8 = errors.New("invalid utf8")
-
-func (r *validator) Read(p []byte) (int, error) {
-	n, err := r.r.Read(p)
-	state := r.state
-	x := r.x
-	for _, b := range p[:n] {
-		state, x = decode(state, x, b)
-		if state == utf8Reject {
-			break
-		}
-	}
-	r.state = state
-	r.x = x
-	if state == utf8Reject || (err == io.EOF && state != utf8Accept) {
-		return n, errInvalidUTF8
-	}
-	return n, err
-}
-
-// UTF-8 decoder from http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
-//
-// Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to
-// deal in the Software without restriction, including without limitation the
-// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-// sell copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-// IN THE SOFTWARE.
-var utf8d = [...]byte{
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 00..1f
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20..3f
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 40..5f
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 60..7f
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // 80..9f
-	7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, // a0..bf
-	8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, // c0..df
-	0xa, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x3, 0x4, 0x3, 0x3, // e0..ef
-	0xb, 0x6, 0x6, 0x6, 0x5, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, 0x8, // f0..ff
-	0x0, 0x1, 0x2, 0x3, 0x5, 0x8, 0x7, 0x1, 0x1, 0x1, 0x4, 0x6, 0x1, 0x1, 0x1, 0x1, // s0..s0
-	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, // s1..s2
-	1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, // s3..s4
-	1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, // s5..s6
-	1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // s7..s8
-}
-
-const (
-	utf8Accept = 0
-	utf8Reject = 1
-)
-
-func decode(state int, x rune, b byte) (int, rune) {
-	t := utf8d[b]
-	if state != utf8Accept {
-		x = rune(b&0x3f) | (x << 6)
-	} else {
-		x = rune((0xff >> t) & b)
-	}
-	state = int(utf8d[256+state*16+int(t)])
-	return state, x
-}
diff --git a/vendor/github.com/gorilla/websocket/examples/chat/client.go b/vendor/github.com/gorilla/websocket/examples/chat/client.go
deleted file mode 100644
index 26468477..00000000
--- a/vendor/github.com/gorilla/websocket/examples/chat/client.go
+++ /dev/null
@@ -1,134 +0,0 @@
-// Copyright 2013 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 main
-
-import (
-	"bytes"
-	"log"
-	"net/http"
-	"time"
-
-	"github.com/gorilla/websocket"
-)
-
-const (
-	// Time allowed to write a message to the peer.
-	writeWait = 10 * time.Second
-
-	// Time allowed to read the next pong message from the peer.
-	pongWait = 60 * time.Second
-
-	// Send pings to peer with this period. Must be less than pongWait.
-	pingPeriod = (pongWait * 9) / 10
-
-	// Maximum message size allowed from peer.
-	maxMessageSize = 512
-)
-
-var (
-	newline = []byte{'\n'}
-	space   = []byte{' '}
-)
-
-var upgrader = websocket.Upgrader{
-	ReadBufferSize:  1024,
-	WriteBufferSize: 1024,
-}
-
-// Client is a middleman between the websocket connection and the hub.
-type Client struct {
-	hub *Hub
-
-	// The websocket connection.
-	conn *websocket.Conn
-
-	// Buffered channel of outbound messages.
-	send chan []byte
-}
-
-// readPump pumps messages from the websocket connection to the hub.
-//
-// The application runs readPump in a per-connection goroutine. The application
-// ensures that there is at most one reader on a connection by executing all
-// reads from this goroutine.
-func (c *Client) readPump() {
-	defer func() {
-		c.hub.unregister <- c
-		c.conn.Close()
-	}()
-	c.conn.SetReadLimit(maxMessageSize)
-	c.conn.SetReadDeadline(time.Now().Add(pongWait))
-	c.conn.SetPongHandler(func(string) error { c.conn.SetReadDeadline(time.Now().Add(pongWait)); return nil })
-	for {
-		_, message, err := c.conn.ReadMessage()
-		if err != nil {
-			if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway) {
-				log.Printf("error: %v", err)
-			}
-			break
-		}
-		message = bytes.TrimSpace(bytes.Replace(message, newline, space, -1))
-		c.hub.broadcast <- message
-	}
-}
-
-// writePump pumps messages from the hub to the websocket connection.
-//
-// A goroutine running writePump is started for each connection. The
-// application ensures that there is at most one writer to a connection by
-// executing all writes from this goroutine.
-func (c *Client) writePump() {
-	ticker := time.NewTicker(pingPeriod)
-	defer func() {
-		ticker.Stop()
-		c.conn.Close()
-	}()
-	for {
-		select {
-		case message, ok := <-c.send:
-			c.conn.SetWriteDeadline(time.Now().Add(writeWait))
-			if !ok {
-				// The hub closed the channel.
-				c.conn.WriteMessage(websocket.CloseMessage, []byte{})
-				return
-			}
-
-			w, err := c.conn.NextWriter(websocket.TextMessage)
-			if err != nil {
-				return
-			}
-			w.Write(message)
-
-			// Add queued chat messages to the current websocket message.
-			n := len(c.send)
-			for i := 0; i < n; i++ {
-				w.Write(newline)
-				w.Write(<-c.send)
-			}
-
-			if err := w.Close(); err != nil {
-				return
-			}
-		case <-ticker.C:
-			c.conn.SetWriteDeadline(time.Now().Add(writeWait))
-			if err := c.conn.WriteMessage(websocket.PingMessage, []byte{}); err != nil {
-				return
-			}
-		}
-	}
-}
-
-// serveWs handles websocket requests from the peer.
-func serveWs(hub *Hub, w http.ResponseWriter, r *http.Request) {
-	conn, err := upgrader.Upgrade(w, r, nil)
-	if err != nil {
-		log.Println(err)
-		return
-	}
-	client := &Client{hub: hub, conn: conn, send: make(chan []byte, 256)}
-	client.hub.register <- client
-	go client.writePump()
-	client.readPump()
-}
diff --git a/vendor/github.com/gorilla/websocket/examples/chat/hub.go b/vendor/github.com/gorilla/websocket/examples/chat/hub.go
deleted file mode 100644
index 7f07ea07..00000000
--- a/vendor/github.com/gorilla/websocket/examples/chat/hub.go
+++ /dev/null
@@ -1,53 +0,0 @@
-// Copyright 2013 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 main
-
-// hub maintains the set of active clients and broadcasts messages to the
-// clients.
-type Hub struct {
-	// Registered clients.
-	clients map[*Client]bool
-
-	// Inbound messages from the clients.
-	broadcast chan []byte
-
-	// Register requests from the clients.
-	register chan *Client
-
-	// Unregister requests from clients.
-	unregister chan *Client
-}
-
-func newHub() *Hub {
-	return &Hub{
-		broadcast:  make(chan []byte),
-		register:   make(chan *Client),
-		unregister: make(chan *Client),
-		clients:    make(map[*Client]bool),
-	}
-}
-
-func (h *Hub) run() {
-	for {
-		select {
-		case client := <-h.register:
-			h.clients[client] = true
-		case client := <-h.unregister:
-			if _, ok := h.clients[client]; ok {
-				delete(h.clients, client)
-				close(client.send)
-			}
-		case message := <-h.broadcast:
-			for client := range h.clients {
-				select {
-				case client.send <- message:
-				default:
-					close(client.send)
-					delete(h.clients, client)
-				}
-			}
-		}
-	}
-}
diff --git a/vendor/github.com/gorilla/websocket/examples/chat/main.go b/vendor/github.com/gorilla/websocket/examples/chat/main.go
deleted file mode 100644
index 74615d59..00000000
--- a/vendor/github.com/gorilla/websocket/examples/chat/main.go
+++ /dev/null
@@ -1,40 +0,0 @@
-// Copyright 2013 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 main
-
-import (
-	"flag"
-	"log"
-	"net/http"
-)
-
-var addr = flag.String("addr", ":8080", "http service address")
-
-func serveHome(w http.ResponseWriter, r *http.Request) {
-	log.Println(r.URL)
-	if r.URL.Path != "/" {
-		http.Error(w, "Not found", 404)
-		return
-	}
-	if r.Method != "GET" {
-		http.Error(w, "Method not allowed", 405)
-		return
-	}
-	http.ServeFile(w, r, "home.html")
-}
-
-func main() {
-	flag.Parse()
-	hub := newHub()
-	go hub.run()
-	http.HandleFunc("/", serveHome)
-	http.HandleFunc("/ws", func(w http.ResponseWriter, r *http.Request) {
-		serveWs(hub, w, r)
-	})
-	err := http.ListenAndServe(*addr, nil)
-	if err != nil {
-		log.Fatal("ListenAndServe: ", err)
-	}
-}
diff --git a/vendor/github.com/gorilla/websocket/examples/command/main.go b/vendor/github.com/gorilla/websocket/examples/command/main.go
deleted file mode 100644
index 239c5c85..00000000
--- a/vendor/github.com/gorilla/websocket/examples/command/main.go
+++ /dev/null
@@ -1,193 +0,0 @@
-// Copyright 2015 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 main
-
-import (
-	"bufio"
-	"flag"
-	"io"
-	"log"
-	"net/http"
-	"os"
-	"os/exec"
-	"time"
-
-	"github.com/gorilla/websocket"
-)
-
-var (
-	addr    = flag.String("addr", "127.0.0.1:8080", "http service address")
-	cmdPath string
-)
-
-const (
-	// Time allowed to write a message to the peer.
-	writeWait = 10 * time.Second
-
-	// Maximum message size allowed from peer.
-	maxMessageSize = 8192
-
-	// Time allowed to read the next pong message from the peer.
-	pongWait = 60 * time.Second
-
-	// Send pings to peer with this period. Must be less than pongWait.
-	pingPeriod = (pongWait * 9) / 10
-
-	// Time to wait before force close on connection.
-	closeGracePeriod = 10 * time.Second
-)
-
-func pumpStdin(ws *websocket.Conn, w io.Writer) {
-	defer ws.Close()
-	ws.SetReadLimit(maxMessageSize)
-	ws.SetReadDeadline(time.Now().Add(pongWait))
-	ws.SetPongHandler(func(string) error { ws.SetReadDeadline(time.Now().Add(pongWait)); return nil })
-	for {
-		_, message, err := ws.ReadMessage()
-		if err != nil {
-			break
-		}
-		message = append(message, '\n')
-		if _, err := w.Write(message); err != nil {
-			break
-		}
-	}
-}
-
-func pumpStdout(ws *websocket.Conn, r io.Reader, done chan struct{}) {
-	defer func() {
-	}()
-	s := bufio.NewScanner(r)
-	for s.Scan() {
-		ws.SetWriteDeadline(time.Now().Add(writeWait))
-		if err := ws.WriteMessage(websocket.TextMessage, s.Bytes()); err != nil {
-			ws.Close()
-			break
-		}
-	}
-	if s.Err() != nil {
-		log.Println("scan:", s.Err())
-	}
-	close(done)
-
-	ws.SetWriteDeadline(time.Now().Add(writeWait))
-	ws.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
-	time.Sleep(closeGracePeriod)
-	ws.Close()
-}
-
-func ping(ws *websocket.Conn, done chan struct{}) {
-	ticker := time.NewTicker(pingPeriod)
-	defer ticker.Stop()
-	for {
-		select {
-		case <-ticker.C:
-			if err := ws.WriteControl(websocket.PingMessage, []byte{}, time.Now().Add(writeWait)); err != nil {
-				log.Println("ping:", err)
-			}
-		case <-done:
-			return
-		}
-	}
-}
-
-func internalError(ws *websocket.Conn, msg string, err error) {
-	log.Println(msg, err)
-	ws.WriteMessage(websocket.TextMessage, []byte("Internal server error."))
-}
-
-var upgrader = websocket.Upgrader{}
-
-func serveWs(w http.ResponseWriter, r *http.Request) {
-	ws, err := upgrader.Upgrade(w, r, nil)
-	if err != nil {
-		log.Println("upgrade:", err)
-		return
-	}
-
-	defer ws.Close()
-
-	outr, outw, err := os.Pipe()
-	if err != nil {
-		internalError(ws, "stdout:", err)
-		return
-	}
-	defer outr.Close()
-	defer outw.Close()
-
-	inr, inw, err := os.Pipe()
-	if err != nil {
-		internalError(ws, "stdin:", err)
-		return
-	}
-	defer inr.Close()
-	defer inw.Close()
-
-	proc, err := os.StartProcess(cmdPath, flag.Args(), &os.ProcAttr{
-		Files: []*os.File{inr, outw, outw},
-	})
-	if err != nil {
-		internalError(ws, "start:", err)
-		return
-	}
-
-	inr.Close()
-	outw.Close()
-
-	stdoutDone := make(chan struct{})
-	go pumpStdout(ws, outr, stdoutDone)
-	go ping(ws, stdoutDone)
-
-	pumpStdin(ws, inw)
-
-	// Some commands will exit when stdin is closed.
-	inw.Close()
-
-	// Other commands need a bonk on the head.
-	if err := proc.Signal(os.Interrupt); err != nil {
-		log.Println("inter:", err)
-	}
-
-	select {
-	case <-stdoutDone:
-	case <-time.After(time.Second):
-		// A bigger bonk on the head.
-		if err := proc.Signal(os.Kill); err != nil {
-			log.Println("term:", err)
-		}
-		<-stdoutDone
-	}
-
-	if _, err := proc.Wait(); err != nil {
-		log.Println("wait:", err)
-	}
-}
-
-func serveHome(w http.ResponseWriter, r *http.Request) {
-	if r.URL.Path != "/" {
-		http.Error(w, "Not found", 404)
-		return
-	}
-	if r.Method != "GET" {
-		http.Error(w, "Method not allowed", 405)
-		return
-	}
-	http.ServeFile(w, r, "home.html")
-}
-
-func main() {
-	flag.Parse()
-	if len(flag.Args()) < 1 {
-		log.Fatal("must specify at least one argument")
-	}
-	var err error
-	cmdPath, err = exec.LookPath(flag.Args()[0])
-	if err != nil {
-		log.Fatal(err)
-	}
-	http.HandleFunc("/", serveHome)
-	http.HandleFunc("/ws", serveWs)
-	log.Fatal(http.ListenAndServe(*addr, nil))
-}
diff --git a/vendor/github.com/gorilla/websocket/examples/echo/client.go b/vendor/github.com/gorilla/websocket/examples/echo/client.go
deleted file mode 100644
index 6578094e..00000000
--- a/vendor/github.com/gorilla/websocket/examples/echo/client.go
+++ /dev/null
@@ -1,81 +0,0 @@
-// Copyright 2015 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 ignore
-
-package main
-
-import (
-	"flag"
-	"log"
-	"net/url"
-	"os"
-	"os/signal"
-	"time"
-
-	"github.com/gorilla/websocket"
-)
-
-var addr = flag.String("addr", "localhost:8080", "http service address")
-
-func main() {
-	flag.Parse()
-	log.SetFlags(0)
-
-	interrupt := make(chan os.Signal, 1)
-	signal.Notify(interrupt, os.Interrupt)
-
-	u := url.URL{Scheme: "ws", Host: *addr, Path: "/echo"}
-	log.Printf("connecting to %s", u.String())
-
-	c, _, err := websocket.DefaultDialer.Dial(u.String(), nil)
-	if err != nil {
-		log.Fatal("dial:", err)
-	}
-	defer c.Close()
-
-	done := make(chan struct{})
-
-	go func() {
-		defer c.Close()
-		defer close(done)
-		for {
-			_, message, err := c.ReadMessage()
-			if err != nil {
-				log.Println("read:", err)
-				return
-			}
-			log.Printf("recv: %s", message)
-		}
-	}()
-
-	ticker := time.NewTicker(time.Second)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case t := <-ticker.C:
-			err := c.WriteMessage(websocket.TextMessage, []byte(t.String()))
-			if err != nil {
-				log.Println("write:", err)
-				return
-			}
-		case <-interrupt:
-			log.Println("interrupt")
-			// To cleanly close a connection, a client should send a close
-			// frame and wait for the server to close the connection.
-			err := c.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
-			if err != nil {
-				log.Println("write close:", err)
-				return
-			}
-			select {
-			case <-done:
-			case <-time.After(time.Second):
-			}
-			c.Close()
-			return
-		}
-	}
-}
diff --git a/vendor/github.com/gorilla/websocket/examples/echo/server.go b/vendor/github.com/gorilla/websocket/examples/echo/server.go
deleted file mode 100644
index a685b097..00000000
--- a/vendor/github.com/gorilla/websocket/examples/echo/server.go
+++ /dev/null
@@ -1,132 +0,0 @@
-// Copyright 2015 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 ignore
-
-package main
-
-import (
-	"flag"
-	"html/template"
-	"log"
-	"net/http"
-
-	"github.com/gorilla/websocket"
-)
-
-var addr = flag.String("addr", "localhost:8080", "http service address")
-
-var upgrader = websocket.Upgrader{} // use default options
-
-func echo(w http.ResponseWriter, r *http.Request) {
-	c, err := upgrader.Upgrade(w, r, nil)
-	if err != nil {
-		log.Print("upgrade:", err)
-		return
-	}
-	defer c.Close()
-	for {
-		mt, message, err := c.ReadMessage()
-		if err != nil {
-			log.Println("read:", err)
-			break
-		}
-		log.Printf("recv: %s", message)
-		err = c.WriteMessage(mt, message)
-		if err != nil {
-			log.Println("write:", err)
-			break
-		}
-	}
-}
-
-func home(w http.ResponseWriter, r *http.Request) {
-	homeTemplate.Execute(w, "ws://"+r.Host+"/echo")
-}
-
-func main() {
-	flag.Parse()
-	log.SetFlags(0)
-	http.HandleFunc("/echo", echo)
-	http.HandleFunc("/", home)
-	log.Fatal(http.ListenAndServe(*addr, nil))
-}
-
-var homeTemplate = template.Must(template.New("").Parse(`
-<!DOCTYPE html>
-<head>
-<meta charset="utf-8">
-<script>  
-window.addEventListener("load", function(evt) {
-
-    var output = document.getElementById("output");
-    var input = document.getElementById("input");
-    var ws;
-
-    var print = function(message) {
-        var d = document.createElement("div");
-        d.innerHTML = message;
-        output.appendChild(d);
-    };
-
-    document.getElementById("open").onclick = function(evt) {
-        if (ws) {
-            return false;
-        }
-        ws = new WebSocket("{{.}}");
-        ws.onopen = function(evt) {
-            print("OPEN");
-        }
-        ws.onclose = function(evt) {
-            print("CLOSE");
-            ws = null;
-        }
-        ws.onmessage = function(evt) {
-            print("RESPONSE: " + evt.data);
-        }
-        ws.onerror = function(evt) {
-            print("ERROR: " + evt.data);
-        }
-        return false;
-    };
-
-    document.getElementById("send").onclick = function(evt) {
-        if (!ws) {
-            return false;
-        }
-        print("SEND: " + input.value);
-        ws.send(input.value);
-        return false;
-    };
-
-    document.getElementById("close").onclick = function(evt) {
-        if (!ws) {
-            return false;
-        }
-        ws.close();
-        return false;
-    };
-
-});
-</script>
-</head>
-<body>
-<table>
-<tr><td valign="top" width="50%">
-<p>Click "Open" to create a connection to the server, 
-"Send" to send a message to the server and "Close" to close the connection. 
-You can change the message and send multiple times.
-<p>
-<form>
-<button id="open">Open</button>
-<button id="close">Close</button>
-<p><input id="input" type="text" value="Hello world!">
-<button id="send">Send</button>
-</form>
-</td><td valign="top" width="50%">
-<div id="output"></div>
-</td></tr></table>
-</body>
-</html>
-`))
diff --git a/vendor/github.com/gorilla/websocket/examples/filewatch/main.go b/vendor/github.com/gorilla/websocket/examples/filewatch/main.go
deleted file mode 100644
index f5f9da5c..00000000
--- a/vendor/github.com/gorilla/websocket/examples/filewatch/main.go
+++ /dev/null
@@ -1,193 +0,0 @@
-// Copyright 2013 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 main
-
-import (
-	"flag"
-	"html/template"
-	"io/ioutil"
-	"log"
-	"net/http"
-	"os"
-	"strconv"
-	"time"
-
-	"github.com/gorilla/websocket"
-)
-
-const (
-	// Time allowed to write the file to the client.
-	writeWait = 10 * time.Second
-
-	// Time allowed to read the next pong message from the client.
-	pongWait = 60 * time.Second
-
-	// Send pings to client with this period. Must be less than pongWait.
-	pingPeriod = (pongWait * 9) / 10
-
-	// Poll file for changes with this period.
-	filePeriod = 10 * time.Second
-)
-
-var (
-	addr      = flag.String("addr", ":8080", "http service address")
-	homeTempl = template.Must(template.New("").Parse(homeHTML))
-	filename  string
-	upgrader  = websocket.Upgrader{
-		ReadBufferSize:  1024,
-		WriteBufferSize: 1024,
-	}
-)
-
-func readFileIfModified(lastMod time.Time) ([]byte, time.Time, error) {
-	fi, err := os.Stat(filename)
-	if err != nil {
-		return nil, lastMod, err
-	}
-	if !fi.ModTime().After(lastMod) {
-		return nil, lastMod, nil
-	}
-	p, err := ioutil.ReadFile(filename)
-	if err != nil {
-		return nil, fi.ModTime(), err
-	}
-	return p, fi.ModTime(), nil
-}
-
-func reader(ws *websocket.Conn) {
-	defer ws.Close()
-	ws.SetReadLimit(512)
-	ws.SetReadDeadline(time.Now().Add(pongWait))
-	ws.SetPongHandler(func(string) error { ws.SetReadDeadline(time.Now().Add(pongWait)); return nil })
-	for {
-		_, _, err := ws.ReadMessage()
-		if err != nil {
-			break
-		}
-	}
-}
-
-func writer(ws *websocket.Conn, lastMod time.Time) {
-	lastError := ""
-	pingTicker := time.NewTicker(pingPeriod)
-	fileTicker := time.NewTicker(filePeriod)
-	defer func() {
-		pingTicker.Stop()
-		fileTicker.Stop()
-		ws.Close()
-	}()
-	for {
-		select {
-		case <-fileTicker.C:
-			var p []byte
-			var err error
-
-			p, lastMod, err = readFileIfModified(lastMod)
-
-			if err != nil {
-				if s := err.Error(); s != lastError {
-					lastError = s
-					p = []byte(lastError)
-				}
-			} else {
-				lastError = ""
-			}
-
-			if p != nil {
-				ws.SetWriteDeadline(time.Now().Add(writeWait))
-				if err := ws.WriteMessage(websocket.TextMessage, p); err != nil {
-					return
-				}
-			}
-		case <-pingTicker.C:
-			ws.SetWriteDeadline(time.Now().Add(writeWait))
-			if err := ws.WriteMessage(websocket.PingMessage, []byte{}); err != nil {
-				return
-			}
-		}
-	}
-}
-
-func serveWs(w http.ResponseWriter, r *http.Request) {
-	ws, err := upgrader.Upgrade(w, r, nil)
-	if err != nil {
-		if _, ok := err.(websocket.HandshakeError); !ok {
-			log.Println(err)
-		}
-		return
-	}
-
-	var lastMod time.Time
-	if n, err := strconv.ParseInt(r.FormValue("lastMod"), 16, 64); err == nil {
-		lastMod = time.Unix(0, n)
-	}
-
-	go writer(ws, lastMod)
-	reader(ws)
-}
-
-func serveHome(w http.ResponseWriter, r *http.Request) {
-	if r.URL.Path != "/" {
-		http.Error(w, "Not found", 404)
-		return
-	}
-	if r.Method != "GET" {
-		http.Error(w, "Method not allowed", 405)
-		return
-	}
-	w.Header().Set("Content-Type", "text/html; charset=utf-8")
-	p, lastMod, err := readFileIfModified(time.Time{})
-	if err != nil {
-		p = []byte(err.Error())
-		lastMod = time.Unix(0, 0)
-	}
-	var v = struct {
-		Host    string
-		Data    string
-		LastMod string
-	}{
-		r.Host,
-		string(p),
-		strconv.FormatInt(lastMod.UnixNano(), 16),
-	}
-	homeTempl.Execute(w, &v)
-}
-
-func main() {
-	flag.Parse()
-	if flag.NArg() != 1 {
-		log.Fatal("filename not specified")
-	}
-	filename = flag.Args()[0]
-	http.HandleFunc("/", serveHome)
-	http.HandleFunc("/ws", serveWs)
-	if err := http.ListenAndServe(*addr, nil); err != nil {
-		log.Fatal(err)
-	}
-}
-
-const homeHTML = `<!DOCTYPE html>
-<html lang="en">
-    <head>
-        <title>WebSocket Example</title>
-    </head>
-    <body>
-        <pre id="fileData">{{.Data}}</pre>
-        <script type="text/javascript">
-            (function() {
-                var data = document.getElementById("fileData");
-                var conn = new WebSocket("ws://{{.Host}}/ws?lastMod={{.LastMod}}");
-                conn.onclose = function(evt) {
-                    data.textContent = 'Connection closed';
-                }
-                conn.onmessage = function(evt) {
-                    console.log('file updated');
-                    data.textContent = evt.data;
-                }
-            })();
-        </script>
-    </body>
-</html>
-`
diff --git a/vendor/github.com/gorilla/websocket/proxy.go b/vendor/github.com/gorilla/websocket/proxy.go
deleted file mode 100644
index 102538bd..00000000
--- a/vendor/github.com/gorilla/websocket/proxy.go
+++ /dev/null
@@ -1,77 +0,0 @@
-// 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(netowrk, 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/x_net_proxy.go b/vendor/github.com/gorilla/websocket/x_net_proxy.go
deleted file mode 100644
index 2e668f6b..00000000
--- a/vendor/github.com/gorilla/websocket/x_net_proxy.go
+++ /dev/null
@@ -1,473 +0,0 @@
-// 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
-}