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Implement websockets support for faster and better signalling
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| /* | ||
| Copyright (c) 2024 Neeraj Jakhar | ||
| This program is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation, either version 3 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "log" | ||
| "time" | ||
|
|
||
| "github.com/gorilla/websocket" | ||
| ) | ||
|
|
||
| const ( | ||
| clientReadLimit = 512 | ||
| pongWait = 10 * time.Second | ||
| pingInterval = (pongWait * 9) / 10 | ||
| ) | ||
|
|
||
| type ClientList map[*Client]bool | ||
|
|
||
| type Client struct { | ||
| authorized bool | ||
| authDeadline time.Time | ||
| sdp string | ||
| connection *websocket.Conn | ||
| manager *Manager | ||
| egress chan Event | ||
| } | ||
|
|
||
| func NewClient(conn *websocket.Conn, manager *Manager) *Client { | ||
| return &Client{ | ||
| authorized: false, | ||
| connection: conn, | ||
| manager: manager, | ||
| egress: make(chan Event), | ||
| authDeadline: time.Now().Add(time.Second * time.Duration(60)), | ||
| } | ||
| } | ||
|
|
||
| func (c *Client) hasAuthTimedOut() bool { | ||
| return time.Now().After(c.authDeadline) | ||
| } | ||
|
|
||
| func (c *Client) readMessages() { | ||
| defer func() { | ||
| log.Println("Exiting read message") | ||
| c.manager.removeClient(c) | ||
| }() | ||
|
|
||
| if err := c.connection.SetReadDeadline(time.Now().Add(pongWait)); err != nil { | ||
| log.Println(err) | ||
| return | ||
| } | ||
|
|
||
| c.connection.SetPongHandler(func(pongMsg string) error { | ||
| log.Println("Received pong message") | ||
| return c.connection.SetReadDeadline(time.Now().Add(pongWait)) | ||
| }) | ||
|
|
||
| log.Println("Entering client read loop") | ||
|
|
||
| for { | ||
| _, payload, err := c.connection.ReadMessage() | ||
| if err != nil { | ||
| log.Printf("Error reading message: %v\n", err) | ||
| if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseAbnormalClosure) { | ||
| log.Printf("error reading message: %v", err) | ||
| } | ||
| break | ||
| } | ||
|
|
||
| log.Println("Payload received") | ||
|
|
||
| var request Event | ||
| if err := json.Unmarshal(payload, &request); err != nil { | ||
| log.Printf("Error processing event: %v", err) | ||
| break | ||
| } | ||
|
|
||
| if err := c.manager.routeEvent(request, c); err != nil { | ||
| log.Println("Error processing event payload: ", err) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (c *Client) writeMessages() { | ||
| ticker := time.NewTicker(pingInterval) | ||
| defer func() { | ||
| log.Println("Exiting write message") | ||
| ticker.Stop() | ||
| c.manager.removeClient(c) | ||
| }() | ||
|
|
||
| log.Println("Entering client write loop") | ||
|
|
||
| for { | ||
| select { | ||
| case message, ok := <-c.egress: | ||
| if !ok { | ||
| log.Println("connection closed") | ||
| if err := c.connection.WriteMessage(websocket.CloseMessage, nil); err != nil { | ||
| log.Println("connection closed: ", err) | ||
| } | ||
| return | ||
| } | ||
|
|
||
| log.Println("Egress event") | ||
| data, err := json.Marshal(message) | ||
| if err != nil { | ||
| // This should never happen | ||
| log.Println(err) | ||
| return | ||
| } | ||
|
|
||
| log.Println("Sending message") | ||
| if err := c.connection.WriteMessage(websocket.TextMessage, data); err != nil { | ||
| log.Println(err) | ||
| } | ||
| case <-ticker.C: | ||
| log.Println("Sending ping message") | ||
| if err := c.connection.WriteMessage(websocket.PingMessage, []byte{}); err != nil { | ||
| log.Println(err) | ||
| return | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| /* | ||
| Copyright (c) 2024 Neeraj Jakhar | ||
| This program is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation, either version 3 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| package main | ||
|
|
||
| import "github.com/pion/webrtc/v3" | ||
|
|
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| type OpenRelay struct { | ||
| AppName string `yaml:"app_name"` | ||
| ApiKey string `yaml:"api_key"` | ||
| } | ||
|
|
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| type ICEServer struct { | ||
| URLs string `json:"urls"` | ||
| Username string `json:"username,omitempty"` | ||
| Credential interface{} `json:"credential,omitempty"` | ||
| CredentialType webrtc.ICECredentialType `json:"credentialType,omitempty"` | ||
| } | ||
|
|
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| type UserCredentials struct { | ||
| User string `yaml:"user" validate:"required"` | ||
| Password string `yaml:"password" validate:"required"` | ||
| } | ||
|
|
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| type TurnConfiguration struct { | ||
| PublicIp string `yaml:"public_ip" validate:"required"` | ||
| UdpPort int `yaml:"port" validate:"required,number,gte=1,lte=65535" default:"8080"` | ||
| Users []UserCredentials `yaml:"users" validate:"required"` | ||
| Realm string `yaml:"realm" validate:"required"` | ||
| Threads int `yaml:"threads" validate:"required,gte=1,lte=20"` | ||
| } | ||
|
|
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| type Configuration struct { | ||
| Port int `yaml:"port" validate:"number,gte=1,lte=65535" default:"8080"` | ||
| Url string `yaml:"url" default:"/stream"` | ||
| ImageWidth uint `yaml:"image_width" default:"640"` | ||
| ImageHeight uint `yaml:"image_height" default:"480"` | ||
| FrameRate uint `yaml:"framerate" default:"30"` | ||
| LogFile string `yaml:"log_file" default:"none"` | ||
| AudioDevice string `yaml:"audio_device" validate:"required"` | ||
| VideoDevice string `yaml:"video_device" validate:"required"` | ||
| Signalling string `yaml:"signalling" validate:"oneof=http websocket" default:"websocket"` | ||
| SignallingUsesTls bool `yaml:"signalling_uses_tls" default:"false"` | ||
| SignallingTlsCert string `yaml:"signalling_tls_cert"` | ||
| SignallingTlsKey string `yaml:"signalling_tls_key"` | ||
| SignallingCredentials []UserCredentials `yaml:"signalling_credentials"` | ||
| SignallingOrigin string `yaml:"signalling_origin" default:""` | ||
| IceTrickling bool `yaml:"ice_trickling" default:"false"` | ||
| DisconnectOnReconnect bool `yaml:"disconnect_on_reconnect" default:"false"` | ||
| IceServers []webrtc.ICEServer `yaml:"ice_servers,omitempty"` | ||
| OpenRelayConfig *OpenRelay `yaml:"open_relay_config,omitempty"` | ||
| UseInternalTurn bool `yaml:"use_internal_turn" default:"false"` | ||
| TurnConfiguration *TurnConfiguration `yaml:"turn_configuration"` | ||
| } |
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