Add Gitter support

vendor/github.com/mreiferson/go-httpclient/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2012 Matt Reiferson
+
+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.

vendor/github.com/mreiferson/go-httpclient/httpclient.go

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+/*
+Provides an HTTP Transport that implements the `RoundTripper` interface and
+can be used as a built in replacement for the standard library's, providing:
+
+	* connection timeouts
+	* request timeouts
+
+This is a thin wrapper around `http.Transport` that sets dial timeouts and uses
+Go's internal timer scheduler to call the Go 1.1+ `CancelRequest()` API.
+*/
+package httpclient
+
+import (
+	"crypto/tls"
+	"errors"
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"sync"
+	"time"
+)
+
+// returns the current version of the package
+func Version() string {
+	return "0.4.1"
+}
+
+// Transport implements the RoundTripper interface and can be used as a replacement
+// for Go's built in http.Transport implementing end-to-end request timeouts.
+//
+// 	transport := &httpclient.Transport{
+// 	    ConnectTimeout: 1*time.Second,
+// 	    ResponseHeaderTimeout: 5*time.Second,
+// 	    RequestTimeout: 10*time.Second,
+// 	}
+// 	defer transport.Close()
+//
+// 	client := &http.Client{Transport: transport}
+// 	req, _ := http.NewRequest("GET", "http://127.0.0.1/test", nil)
+// 	resp, err := client.Do(req)
+// 	if err != nil {
+// 	    return err
+// 	}
+// 	defer resp.Body.Close()
+//
+type Transport struct {
+	// Proxy specifies a function to return a proxy for a given
+	// *http.Request. If the function returns a non-nil error, the
+	// request is aborted with the provided error.
+	// If Proxy is nil or returns a nil *url.URL, no proxy is used.
+	Proxy func(*http.Request) (*url.URL, error)
+
+	// Dial specifies the dial function for creating TCP
+	// connections. This will override the Transport's ConnectTimeout and
+	// ReadWriteTimeout settings.
+	// If Dial is nil, a dialer is generated on demand matching the Transport's
+	// options.
+	Dial func(network, addr string) (net.Conn, error)
+
+	// TLSClientConfig specifies the TLS configuration to use with
+	// tls.Client. If nil, the default configuration is used.
+	TLSClientConfig *tls.Config
+
+	// DisableKeepAlives, if true, prevents re-use of TCP connections
+	// between different HTTP requests.
+	DisableKeepAlives bool
+
+	// DisableCompression, if true, prevents the Transport from
+	// requesting compression with an "Accept-Encoding: gzip"
+	// request header when the Request contains no existing
+	// Accept-Encoding value. If the Transport requests gzip on
+	// its own and gets a gzipped response, it's transparently
+	// decoded in the Response.Body. However, if the user
+	// explicitly requested gzip it is not automatically
+	// uncompressed.
+	DisableCompression bool
+
+	// MaxIdleConnsPerHost, if non-zero, controls the maximum idle
+	// (keep-alive) to keep per-host.  If zero,
+	// http.DefaultMaxIdleConnsPerHost is used.
+	MaxIdleConnsPerHost int
+
+	// ConnectTimeout, if non-zero, is the maximum amount of time a dial will wait for
+	// a connect to complete.
+	ConnectTimeout time.Duration
+
+	// ResponseHeaderTimeout, if non-zero, specifies the amount of
+	// time to wait for a server's response headers after fully
+	// writing the request (including its body, if any). This
+	// time does not include the time to read the response body.
+	ResponseHeaderTimeout time.Duration
+
+	// RequestTimeout, if non-zero, specifies the amount of time for the entire
+	// request to complete (including all of the above timeouts + entire response body).
+	// This should never be less than the sum total of the above two timeouts.
+	RequestTimeout time.Duration
+
+	// ReadWriteTimeout, if non-zero, will set a deadline for every Read and
+	// Write operation on the request connection.
+	ReadWriteTimeout time.Duration
+
+	// TCPWriteBufferSize, the size of the operating system's write
+	// buffer associated with the connection.
+	TCPWriteBufferSize int
+
+	// TCPReadBuffserSize, the size of the operating system's read
+	// buffer associated with the connection.
+	TCPReadBufferSize int
+
+	starter   sync.Once
+	transport *http.Transport
+}
+
+// Close cleans up the Transport, currently a no-op
+func (t *Transport) Close() error {
+	return nil
+}
+
+func (t *Transport) lazyStart() {
+	if t.Dial == nil {
+		t.Dial = func(netw, addr string) (net.Conn, error) {
+			c, err := net.DialTimeout(netw, addr, t.ConnectTimeout)
+			if err != nil {
+				return nil, err
+			}
+
+			if t.TCPReadBufferSize != 0 || t.TCPWriteBufferSize != 0 {
+				if tcpCon, ok := c.(*net.TCPConn); ok {
+					if t.TCPWriteBufferSize != 0 {
+						if err = tcpCon.SetWriteBuffer(t.TCPWriteBufferSize); err != nil {
+							return nil, err
+						}
+					}
+					if t.TCPReadBufferSize != 0 {
+						if err = tcpCon.SetReadBuffer(t.TCPReadBufferSize); err != nil {
+							return nil, err
+						}
+					}
+				} else {
+					err = errors.New("Not Tcp Connection")
+					return nil, err
+				}
+			}
+
+			if t.ReadWriteTimeout > 0 {
+				timeoutConn := &rwTimeoutConn{
+					TCPConn:   c.(*net.TCPConn),
+					rwTimeout: t.ReadWriteTimeout,
+				}
+				return timeoutConn, nil
+			}
+			return c, nil
+		}
+	}
+
+	t.transport = &http.Transport{
+		Dial:                  t.Dial,
+		Proxy:                 t.Proxy,
+		TLSClientConfig:       t.TLSClientConfig,
+		DisableKeepAlives:     t.DisableKeepAlives,
+		DisableCompression:    t.DisableCompression,
+		MaxIdleConnsPerHost:   t.MaxIdleConnsPerHost,
+		ResponseHeaderTimeout: t.ResponseHeaderTimeout,
+	}
+}
+
+func (t *Transport) CancelRequest(req *http.Request) {
+	t.starter.Do(t.lazyStart)
+
+	t.transport.CancelRequest(req)
+}
+
+func (t *Transport) CloseIdleConnections() {
+	t.starter.Do(t.lazyStart)
+
+	t.transport.CloseIdleConnections()
+}
+
+func (t *Transport) RegisterProtocol(scheme string, rt http.RoundTripper) {
+	t.starter.Do(t.lazyStart)
+
+	t.transport.RegisterProtocol(scheme, rt)
+}
+
+func (t *Transport) RoundTrip(req *http.Request) (resp *http.Response, err error) {
+	t.starter.Do(t.lazyStart)
+
+	if t.RequestTimeout > 0 {
+		timer := time.AfterFunc(t.RequestTimeout, func() {
+			t.transport.CancelRequest(req)
+		})
+
+		resp, err = t.transport.RoundTrip(req)
+		if err != nil {
+			timer.Stop()
+		} else {
+			resp.Body = &bodyCloseInterceptor{ReadCloser: resp.Body, timer: timer}
+		}
+	} else {
+		resp, err = t.transport.RoundTrip(req)
+	}
+
+	return
+}
+
+type bodyCloseInterceptor struct {
+	io.ReadCloser
+	timer *time.Timer
+}
+
+func (bci *bodyCloseInterceptor) Close() error {
+	bci.timer.Stop()
+	return bci.ReadCloser.Close()
+}
+
+// A net.Conn that sets a deadline for every Read or Write operation
+type rwTimeoutConn struct {
+	*net.TCPConn
+	rwTimeout time.Duration
+}
+
+func (c *rwTimeoutConn) Read(b []byte) (int, error) {
+	err := c.TCPConn.SetDeadline(time.Now().Add(c.rwTimeout))
+	if err != nil {
+		return 0, err
+	}
+	return c.TCPConn.Read(b)
+}
+
+func (c *rwTimeoutConn) Write(b []byte) (int, error) {
+	err := c.TCPConn.SetDeadline(time.Now().Add(c.rwTimeout))
+	if err != nil {
+		return 0, err
+	}
+	return c.TCPConn.Write(b)
+}