基于Facebook开源框架SocketRocket的即时通讯

时间:2020-12-12 01:49:46

  SocketRocket 介绍:

  SocketRock 是 Facebook 开源的框架,基于 WebSocket 客户端类库,适用于 iOS、Mac OS、tv OS。GitHub 传送门:https://github.com/facebook/SocketRocket

  安装:pod 'SocketRocket'

  也可以拖入文件 SocketRocket:

  基于Facebook开源框架SocketRocket的即时通讯

  引入框架:

  • libicucore.dylib
  • CFNetwork.framework
  • Security.framework
  • Foundation.framework

  SocketRocket 初始化:

- (void)initSocket
{
if (webSocket) {
return;
}
webSocket = [[SRWebSocket alloc] initWithURL:[NSURL URLWithString:ServerURL]];
webSocket.delegate = self; // 设置代理线程queue
NSOperationQueue * queue=[[NSOperationQueue alloc]init];
queue.maxConcurrentOperationCount=;
[webSocket setDelegateOperationQueue:queue]; // 连接
[webSocket open]; }

  

// 初始化心跳
- (void)initHeartBeat
{
dispatch_main_async_safe(^{
[self destroyHeartBeat]; __weak typeof (self) weakSelf = self;
//心跳设置为3分钟,NAT超时一般为5分钟
heartBeat = [NSTimer scheduledTimerWithTimeInterval:* repeats:YES block:^(NSTimer * _Nonnull timer) {
NSLog(@"heart");
//和服务端约定好发送什么作为心跳标识,尽可能的减小心跳包大小
[weakSelf sendMsg:@"heart"];
}];
[[NSRunLoop currentRunLoop] addTimer:heartBeat forMode:NSRunLoopCommonModes];
})
} // 取消心跳
- (void)destroyHeartBeat
{
dispatch_main_async_safe(^{
if (heartBeat) {
[heartBeat invalidate];
heartBeat=nil;
}
})
} // 重连机制
- (void)reConnect
{
[self disConnect]; // 超过一分钟就不再重连 之后重连5次 2^5=64
if (reConnectTime>) {
return;
} dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(reConnectTime * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
webSocket=nil;
[self initSocket];
}); // 重连时间2的指数级增长
if (reConnectTime == ) {
reConnectTime =;
} else {
reConnectTime *=;
}
}

  代理方法:

#pragma mark - SRWebScokerDelegate
- (void)webSocket:(SRWebSocket *)webSocket didReceiveMessage:(id)message
{
NSLog(@"服务器返回的信息:%@",message);
} - (void)webSocketDidOpen:(SRWebSocket *)webSocket
{
NSLog(@"连接成功");
// 连接成功 开始发送心跳
[self initHeartBeat];
} // open失败时调用
- (void)webSocket:(SRWebSocket *)webSocket didFailWithError:(NSError *)error
{
NSLog(@"连接失败。。。。。%@",error);
// 失败了去重连
[self reConnect];
} // 网络连接中断被调用
- (void)webSocket:(SRWebSocket *)webSocket didCloseWithCode:(NSInteger)code reason:(NSString *)reason wasClean:(BOOL)wasClean
{ NSLog(@"被关闭连接,code:%ld,reason:%@,wasClean:%d",code,reason,wasClean); //如果是被用户自己中断的那么直接断开连接,否则开始重连
if (code == DisConnectTypeByUser) {
[self disConnect];
} else { [self reConnect];
}
//断开连接时销毁心跳
[self destroyHeartBeat];
} //sendPing的时候,如果网络通的话,则会收到回调,但是必须保证ScoketOpen,否则会crash
- (void)webSocket:(SRWebSocket *)webSocket didReceivePong:(NSData *)pongPayload
{
NSLog(@"收到pong回调"); }