php + js 实现webRtc 1对1聊天
本文使用 GatewayWorker 实现信令
使用WebSocket 与 GatewayWorker 创建信令通讯
废话少说,直接上代码吧
配置好相应代码后请根据本文下面的使用方法进行使用,具体根据你业务进行修改
2. 修改GatewayWorker 配置
修改成 websocket 协议
3. 修改 onConnect中的代码
1 2 3 4 5 6 | //创建WebSocket连接后返回 事件event = bindUser给前端,前端通过client_id 绑定uid $data [ 'data' ] = [ 'client_id' => $client_id ]; $data [ 'event' ] = 'bindUser' ; Gateway::sendToClient( $client_id , json_encode( $data )); |
4. 修改 onMessage
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | $request = json_decode( $data ,true); $data = $request [ 'data' ]; $return_data = [ 'status' => 200, 'msg' => '成功' , 'data' => $data , 'event' => $request [ 'cmd' ], //怎么传过来怎么返回, 前端事件通过事件创建通讯 'from_uid' => $request [ 'from_uid' ], //发送人uid 'to_uid' => $request [ 'to_uid' ] //接收人uid ]; switch ( $request [ 'cmd' ]) { case 'bindUser' : //绑定uid Gateway::bindUid( $client_id , $request [ 'from_uid' ]); $return_data [ 'event' ] = 'bindUserCallback' ; $return_data [ 'msg' ] = '绑定uid成功' ; $receive_uid = $request [ 'from_uid' ]; break ; default : $receive_uid = $request [ 'to_uid' ]; break ; } //发送人 Gateway::sendToUid( $receive_uid , json_encode( $return_data )); |
到此为止 php 代码就写完了
5. 前端代码 首先我们先了解一下webRtc 连接的原理 大概就是这样
下面是前端代码
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 | <! DOCTYPE html> < html lang="en"> < head > < meta charset="UTF-8"> < meta http-equiv="X-UA-Compatible" content="IE=edge"> < meta name="viewport" content="width=device-width, initial-scale=1.0"> < title >Document</ title > < style > div{ width: 200px; height: 200px; border: 1px solid red; } video{ width: 100%; height: 100%; } .call{ line-height: 100px; width: 100px; height: 100px; border: 1px solid red; display: none; } </ style > </ head > < body > < div >< video id="localVideo" autoplay></ video ></ div > < div >< video id="remoteVideo" autoplay class="hidden"></ video ></ div > < button onclick="call()">呼叫</ button > < div class="call"> < button onclick="received()">接听</ button > < button onclick="refuse()">拒绝</ button > </ div > < script src="./jquery-3.6.0.min.js"></ script > < script > var ws_url = ''; var localVideo = document.getElementById('localVideo'); var remoteVideo = document.getElementById('remoteVideo'); var from_uid = getUrlParam('from_uid'); //自己的uid var to_uid = getUrlParam('to_uid'); // 好友的uid var ws = new WebSocket(ws_url); ws.onopen = function(){ console.log('创建WebSocket成功'); }; ws.onmessage = function(e){ var data = JSON.parse(e.data); console.log(data) // eval(package.event+'(' + JSON.stringify(package.data) + ')') switch(data.event){ case 'bindUser': send('bindUser', {}); break; case 'bindUserCallback': console.log('uid绑定成功!') break; case 'videoChat': let type = data.data.type; if(data.status != 200){ alert(data.msg); } !to_uid ? to_uid = data.to_uid : ''; data = data.data //收到呼叫 if(type == 'call'){ called(); }else if(type == 'received'){ webRtc.createOffer(function(data){ console.log('呼叫方创建offer'); send('videoChat',{data: data,type: 'offer'}) }) }else if(type == 'candidate'){ console.log('保存candidate'); webRtc.addIceCandidate(data.data) }else if(type == 'offer'){ console.log('被呼叫方收到offer,创建answer'); webRtc.createAnswer(data.data,function(data){ send('videoChat',{data: data,type: 'answer'}) }); }else if(type == 'answer'){ console.log('呼叫方保存answer'); webRtc.addAnswer(data.data); } break; } } function send(cmd,data){ ws.send(JSON.stringify({ cmd: cmd, data: data, from_uid: from_uid, to_uid: to_uid })) } //呼叫 function call(){ media.call() if(!to_uid){ alert('接收人不能为空!'); return; } send('videoChat',{type: 'call'}); } function called(){ console.log('收到呼叫') $('.call').show(); } function received(){ media.called(); console.log('接听') } function refuse(){ send('call',{type: 'refuse'}); to_uid ? to_uid = 0 : ''; console.log('拒绝') } let media = { candidate: {}, offer: {}, //呼叫方 call(){ let that = this; that.authorize(function(){ webRtc.createRtc(function(data){ console.log('呼叫方创建连接成功') },function(data){ send('videoChat',{data: data,type: 'candidate'}); }); }) }, //被呼叫 - 接听 called(){ let that = this; that.authorize(function(){ webRtc.createRtc(function(data){ console.log('被呼叫创建连接成功') send('videoChat',{type: 'received'}); },function(data){ send('videoChat',{data: data, type: 'candidate'} ); }); }) }, authorize(c){ navigator.mediaDevices.getUserMedia({ audio: true, video: true }).then(function (stream) { localVideo.srcObject = stream; webRtc.stream = stream; c(); localVideo.addEventListener('loadedmetadata', function () { console.log('加载视频流'); }); }).catch(function (e) { alert(e); }); } } let webRtc = { stream: {}, pc: {}, createRtc(c,candidataCallback){ let that = this; var configuration = { iceServers: [{ urls: 'stun:stun.xten.com' }] }; let pc = new RTCPeerConnection(configuration); c(pc); pc.onicecandidate = function (event) { if (event.candidate) { candidataCallback(event.candidate) } }; try{ pc.addStream(that.stream); }catch(e){ var tracks = that.stream.getTracks(); for(var i=0;i< tracks.length ;i++){ pc.addTrack(tracks[i], that.stream); } } pc.onaddstream = function (e) { console.log('回调视频流'); remoteVideo.srcObject = e.stream; }; this.pc = pc }, //保存Candidate addIceCandidate(data){ this.pc.addIceCandidate(new RTCIceCandidate(data), function(){}, function(e){alert(e);}); }, //创建offer createOffer(c){ let pc = this.pc pc.createOffer({ offerToReceiveAudio: 1, offerToReceiveVideo: 1 }).then(function (desc) { pc.setLocalDescription(desc).then( function () { c(pc.localDescription); } ).catch(function (e) { alert(e); }); }).catch(function (e) { alert(e); }); }, //根据offer 创建 answer createAnswer(data,c){ let pc = this.pc let answer = 0; pc.setRemoteDescription(new RTCSessionDescription(data), function(){ if (answer == 0) { pc.createAnswer(function (desc) { pc.setLocalDescription(desc, function () { c(pc.localDescription); }, function(e){ alert(e); }); } ,function(e){ alert(e); }); answer = 1; } }, function(e){ alert(e); }); }, addAnswer(data){ this.pc.setRemoteDescription(new RTCSessionDescription(data),function(){}, function(e){ alert(e); }); } } function getUrlParam(name) { var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"); var r = window.location.search.substr(1).match(reg); if (r != null) return unescape(r[2]); return null; } </script> </ body > </ html > |
设置WebSocket 连接地址 GatewayWorker 默认端口是8282
winwods 双击下面文件运行 ,liunx 进入下面这个目录 执行 php start.php start -d 以守护进程方式运行

注意!注意!注意!
同个电脑不同的浏览器不能同时打开摄像头
所以这里建议放到服务器上,并设置wss连接,否则不能使用
修改liunx 配置文件,添加下面代码
location /wss/ {
proxy_pass http://127.0.0.1:8282;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
}
然后WebSocket 的地址为服务器域名就行
使用方法:
1. 发送方 https://域名/index.html?from_uid=1&to_uid=2
2. 接收方 https://域名/index.html?from_uid=2
3. 发送方点击呼叫,接收方会出现接口拒绝按钮,点击接听既可创建通信
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