289b30715d
This commit converts the dependency management from Godeps to the vendor folder, also switching the tool from godep to trash. Since the upstream tool lacks a few features proposed via a few PRs, until those PRs are merged in (if), use github.com/karalabe/trash. You can update dependencies via trash --update. All dependencies have been updated to their latest version. Parts of the build system are reworked to drop old notions of Godeps and invocation of the go vet command so that it doesn't run against the vendor folder, as that will just blow up during vetting. The conversion drops OpenCL (and hence GPU mining support) from ethash and our codebase. The short reasoning is that there's noone to maintain and having opencl libs in our deps messes up builds as go install ./... tries to build them, failing with unsatisfied link errors for the C OpenCL deps. golang.org/x/net/context is not vendored in. We expect it to be fetched by the user (i.e. using go get). To keep ci.go builds reproducible the package is "vendored" in build/_vendor.
114 lines
3.4 KiB
Go
114 lines
3.4 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package websocket
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import (
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"bufio"
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"fmt"
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"io"
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"net/http"
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)
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func newServerConn(rwc io.ReadWriteCloser, buf *bufio.ReadWriter, req *http.Request, config *Config, handshake func(*Config, *http.Request) error) (conn *Conn, err error) {
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var hs serverHandshaker = &hybiServerHandshaker{Config: config}
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code, err := hs.ReadHandshake(buf.Reader, req)
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if err == ErrBadWebSocketVersion {
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fmt.Fprintf(buf, "HTTP/1.1 %03d %s\r\n", code, http.StatusText(code))
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fmt.Fprintf(buf, "Sec-WebSocket-Version: %s\r\n", SupportedProtocolVersion)
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buf.WriteString("\r\n")
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buf.WriteString(err.Error())
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buf.Flush()
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return
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}
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if err != nil {
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fmt.Fprintf(buf, "HTTP/1.1 %03d %s\r\n", code, http.StatusText(code))
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buf.WriteString("\r\n")
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buf.WriteString(err.Error())
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buf.Flush()
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return
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}
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if handshake != nil {
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err = handshake(config, req)
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if err != nil {
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code = http.StatusForbidden
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fmt.Fprintf(buf, "HTTP/1.1 %03d %s\r\n", code, http.StatusText(code))
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buf.WriteString("\r\n")
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buf.Flush()
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return
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}
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}
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err = hs.AcceptHandshake(buf.Writer)
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if err != nil {
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code = http.StatusBadRequest
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fmt.Fprintf(buf, "HTTP/1.1 %03d %s\r\n", code, http.StatusText(code))
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buf.WriteString("\r\n")
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buf.Flush()
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return
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}
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conn = hs.NewServerConn(buf, rwc, req)
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return
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}
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// Server represents a server of a WebSocket.
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type Server struct {
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// Config is a WebSocket configuration for new WebSocket connection.
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Config
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// Handshake is an optional function in WebSocket handshake.
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// For example, you can check, or don't check Origin header.
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// Another example, you can select config.Protocol.
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Handshake func(*Config, *http.Request) error
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// Handler handles a WebSocket connection.
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Handler
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}
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// ServeHTTP implements the http.Handler interface for a WebSocket
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func (s Server) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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s.serveWebSocket(w, req)
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}
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func (s Server) serveWebSocket(w http.ResponseWriter, req *http.Request) {
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rwc, buf, err := w.(http.Hijacker).Hijack()
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if err != nil {
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panic("Hijack failed: " + err.Error())
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}
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// The server should abort the WebSocket connection if it finds
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// the client did not send a handshake that matches with protocol
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// specification.
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defer rwc.Close()
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conn, err := newServerConn(rwc, buf, req, &s.Config, s.Handshake)
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if err != nil {
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return
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}
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if conn == nil {
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panic("unexpected nil conn")
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}
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s.Handler(conn)
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}
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// Handler is a simple interface to a WebSocket browser client.
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// It checks if Origin header is valid URL by default.
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// You might want to verify websocket.Conn.Config().Origin in the func.
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// If you use Server instead of Handler, you could call websocket.Origin and
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// check the origin in your Handshake func. So, if you want to accept
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// non-browser clients, which do not send an Origin header, set a
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// Server.Handshake that does not check the origin.
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type Handler func(*Conn)
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func checkOrigin(config *Config, req *http.Request) (err error) {
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config.Origin, err = Origin(config, req)
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if err == nil && config.Origin == nil {
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return fmt.Errorf("null origin")
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}
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return err
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}
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// ServeHTTP implements the http.Handler interface for a WebSocket
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func (h Handler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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s := Server{Handler: h, Handshake: checkOrigin}
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s.serveWebSocket(w, req)
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}
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