mirror of
https://github.com/kubernetes-sigs/prometheus-adapter.git
synced 2026-04-06 09:47:54 +00:00
a293b2bf94
Travis seems to be having issues pulling deps, so we'll have to check in the vendor directory and prevent the makefile from trying to regenerate it normally.
106 lines
2.4 KiB
Go
106 lines
2.4 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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"io"
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"net"
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"net/http"
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"net/url"
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)
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// DialError is an error that occurs while dialling a websocket server.
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type DialError struct {
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*Config
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Err error
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}
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func (e *DialError) Error() string {
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return "websocket.Dial " + e.Config.Location.String() + ": " + e.Err.Error()
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}
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// NewConfig creates a new WebSocket config for client connection.
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func NewConfig(server, origin string) (config *Config, err error) {
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config = new(Config)
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config.Version = ProtocolVersionHybi13
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config.Location, err = url.ParseRequestURI(server)
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if err != nil {
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return
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}
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config.Origin, err = url.ParseRequestURI(origin)
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if err != nil {
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return
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}
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config.Header = http.Header(make(map[string][]string))
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return
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}
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// NewClient creates a new WebSocket client connection over rwc.
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func NewClient(config *Config, rwc io.ReadWriteCloser) (ws *Conn, err error) {
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br := bufio.NewReader(rwc)
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bw := bufio.NewWriter(rwc)
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err = hybiClientHandshake(config, br, bw)
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if err != nil {
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return
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}
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buf := bufio.NewReadWriter(br, bw)
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ws = newHybiClientConn(config, buf, rwc)
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return
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}
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// Dial opens a new client connection to a WebSocket.
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func Dial(url_, protocol, origin string) (ws *Conn, err error) {
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config, err := NewConfig(url_, origin)
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if err != nil {
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return nil, err
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}
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if protocol != "" {
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config.Protocol = []string{protocol}
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}
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return DialConfig(config)
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}
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var portMap = map[string]string{
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"ws": "80",
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"wss": "443",
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}
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func parseAuthority(location *url.URL) string {
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if _, ok := portMap[location.Scheme]; ok {
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if _, _, err := net.SplitHostPort(location.Host); err != nil {
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return net.JoinHostPort(location.Host, portMap[location.Scheme])
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}
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}
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return location.Host
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}
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// DialConfig opens a new client connection to a WebSocket with a config.
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func DialConfig(config *Config) (ws *Conn, err error) {
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var client net.Conn
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if config.Location == nil {
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return nil, &DialError{config, ErrBadWebSocketLocation}
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}
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if config.Origin == nil {
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return nil, &DialError{config, ErrBadWebSocketOrigin}
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}
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dialer := config.Dialer
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if dialer == nil {
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dialer = &net.Dialer{}
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}
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client, err = dialWithDialer(dialer, config)
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if err != nil {
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goto Error
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}
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ws, err = NewClient(config, client)
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if err != nil {
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client.Close()
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goto Error
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}
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return
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Error:
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return nil, &DialError{config, err}
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}
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