-
Notifications
You must be signed in to change notification settings - Fork 47
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
feat(x): add Websocket client support (#231)
- Loading branch information
Showing
5 changed files
with
305 additions
and
52 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| // Copyright 2024 Jigsaw Operations LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // https://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package config | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "net" | ||
| "net/url" | ||
| "strings" | ||
|
|
||
| "github.com/Jigsaw-Code/outline-sdk/transport" | ||
| "golang.org/x/net/websocket" | ||
| ) | ||
|
|
||
| type wsConfig struct { | ||
| tcpPath string | ||
| udpPath string | ||
| } | ||
|
|
||
| func parseWSConfig(configURL *url.URL) (*wsConfig, error) { | ||
| query := configURL.Opaque | ||
| values, err := url.ParseQuery(query) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| var cfg wsConfig | ||
| for key, values := range values { | ||
| switch strings.ToLower(key) { | ||
| case "tcp_path": | ||
| if len(values) != 1 { | ||
| return nil, fmt.Errorf("udp_path option must has one value, found %v", len(values)) | ||
| } | ||
| cfg.tcpPath = values[0] | ||
| case "udp_path": | ||
| if len(values) != 1 { | ||
| return nil, fmt.Errorf("tcp_path option must has one value, found %v", len(values)) | ||
| } | ||
| cfg.udpPath = values[0] | ||
| default: | ||
| return nil, fmt.Errorf("unsupported option %v", key) | ||
| } | ||
| } | ||
| return &cfg, nil | ||
| } | ||
|
|
||
| // wsToStreamConn converts a [websocket.Conn] to a [transport.StreamConn]. | ||
| type wsToStreamConn struct { | ||
| *websocket.Conn | ||
| } | ||
|
|
||
| func (c *wsToStreamConn) CloseRead() error { | ||
| // Nothing to do. | ||
| return nil | ||
| } | ||
|
|
||
| func (c *wsToStreamConn) CloseWrite() error { | ||
| return c.Close() | ||
| } | ||
|
|
||
| func wrapStreamDialerWithWebSocket(innerSD func() (transport.StreamDialer, error), _ func() (transport.PacketDialer, error), configURL *url.URL) (transport.StreamDialer, error) { | ||
| sd, err := innerSD() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| config, err := parseWSConfig(configURL) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if config.tcpPath == "" { | ||
| return nil, errors.New("must specify tcp_path") | ||
| } | ||
| return transport.FuncStreamDialer(func(ctx context.Context, addr string) (transport.StreamConn, error) { | ||
| wsURL := url.URL{Scheme: "ws", Host: addr, Path: config.tcpPath} | ||
| origin := url.URL{Scheme: "http", Host: addr} | ||
| wsCfg, err := websocket.NewConfig(wsURL.String(), origin.String()) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to create websocket config: %w", err) | ||
| } | ||
| baseConn, err := sd.DialStream(ctx, addr) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to connect to websocket endpoint: %w", err) | ||
| } | ||
| wsConn, err := websocket.NewClient(wsCfg, baseConn) | ||
| if err != nil { | ||
| baseConn.Close() | ||
| return nil, fmt.Errorf("failed to create websocket client: %w", err) | ||
| } | ||
| return &wsToStreamConn{wsConn}, nil | ||
| }), nil | ||
| } | ||
|
|
||
| func wrapPacketDialerWithWebSocket(innerSD func() (transport.StreamDialer, error), _ func() (transport.PacketDialer, error), configURL *url.URL) (transport.PacketDialer, error) { | ||
| sd, err := innerSD() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| config, err := parseWSConfig(configURL) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if config.udpPath == "" { | ||
| return nil, errors.New("must specify udp_path") | ||
| } | ||
| return transport.FuncPacketDialer(func(ctx context.Context, addr string) (net.Conn, error) { | ||
| wsURL := url.URL{Scheme: "ws", Host: addr, Path: config.udpPath} | ||
| origin := url.URL{Scheme: "http", Host: addr} | ||
| wsCfg, err := websocket.NewConfig(wsURL.String(), origin.String()) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to create websocket config: %w", err) | ||
| } | ||
| baseConn, err := sd.DialStream(ctx, addr) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to connect to websocket endpoint: %w", err) | ||
| } | ||
| wsConn, err := websocket.NewClient(wsCfg, baseConn) | ||
| if err != nil { | ||
| baseConn.Close() | ||
| return nil, fmt.Errorf("failed to create websocket client: %w", err) | ||
| } | ||
| return wsConn, nil | ||
| }), nil | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.