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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| // Copyright 2024 The Outline Authors | ||
| // | ||
| // 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 | ||
| // | ||
| // http://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/http" | ||
| "net/url" | ||
|
|
||
| "github.com/Jigsaw-Code/outline-sdk/transport" | ||
| "github.com/coder/websocket" | ||
| ) | ||
|
|
||
| type WebsocketEndpointConfig struct { | ||
| URL string | ||
| HTTP_Client ConfigNode | ||
| } | ||
|
|
||
| func parseWebsocketStreamEndpoint(ctx context.Context, configMap map[string]any, httpClient *http.Client) (*Endpoint[transport.StreamConn], error) { | ||
| return parseWebsocketEndpoint(ctx, configMap, httpClient, func(c *websocket.Conn) transport.StreamConn { | ||
| return &netToStreamConn{websocket.NetConn(context.Background(), c, websocket.MessageBinary)} | ||
| }) | ||
| } | ||
|
|
||
| func parseWebsocketPacketEndpoint(ctx context.Context, configMap map[string]any, httpClient *http.Client) (*Endpoint[net.Conn], error) { | ||
| return parseWebsocketEndpoint(ctx, configMap, httpClient, func(c *websocket.Conn) net.Conn { | ||
| return websocket.NetConn(context.Background(), c, websocket.MessageBinary) | ||
| }) | ||
| } | ||
|
|
||
| func parseWebsocketEndpoint[ConnType any](_ context.Context, configMap map[string]any, httpClient *http.Client, wsToConn func(*websocket.Conn) ConnType) (*Endpoint[ConnType], error) { | ||
| var config WebsocketEndpointConfig | ||
| if err := mapToAny(configMap, &config); err != nil { | ||
| return nil, fmt.Errorf("invalid config format: %w", err) | ||
| } | ||
|
|
||
| url, err := url.Parse(config.URL) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("url is invalid: %w", err) | ||
| } | ||
|
|
||
| if config.HTTP_Client != nil { | ||
| return nil, errors.New("http_client not yet supported") | ||
| } | ||
|
|
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| port := url.Port() | ||
| if port == "" { | ||
| switch url.Scheme { | ||
| case "https", "wss": | ||
| port = "443" | ||
| case "http", "ws": | ||
| port = "80" | ||
| } | ||
| } | ||
|
|
||
| options := &websocket.DialOptions{HTTPClient: httpClient} | ||
| return &Endpoint[ConnType]{ | ||
| ConnectionProviderInfo: ConnectionProviderInfo{ConnType: ConnTypeDirect, FirstHop: net.JoinHostPort(url.Hostname(), port)}, | ||
| Connect: func(ctx context.Context) (ConnType, error) { | ||
| var zero ConnType | ||
| conn, _, err := websocket.Dial(ctx, config.URL, options) | ||
|
|
||
| if err != nil { | ||
| return zero, err | ||
| } | ||
| return wsToConn(conn), nil | ||
| }, | ||
| }, nil | ||
| } | ||
|
|
||
| // netToStreamConn converts a [net.Conn] to a [transport.StreamConn]. | ||
| type netToStreamConn struct { | ||
| net.Conn | ||
| } | ||
|
|
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| var _ transport.StreamConn = (*netToStreamConn)(nil) | ||
|
|
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| func (c *netToStreamConn) CloseRead() error { | ||
| // Do nothing. | ||
| return nil | ||
| } | ||
|
|
||
| func (c *netToStreamConn) CloseWrite() error { | ||
| return c.Close() | ||
| } |
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