问Objective-C套接字在iOS上的发送和接收

EN

几年前，我使用了SocketRocket。我从我的旧项目中发布了它的一些代码。我不知道这是否仍然有效，但您可能会有使用它的想法。

1. 连接到服务器

NSMutableURLRequest *pushServerRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"ws://192.168.1.1"]]; [pushServerRequest setValue:@"WebSocket" forHTTPHeaderField:@"Upgrade"]; [pushServerRequest setValue:@"Upgrade" forHTTPHeaderField:@"Connection"]; [pushServerRequest setValue:"somekey" forHTTPHeaderField:@"Sec-WebSocket-Protocol"]; SRWebSocket *wsmain = [[SRWebSocket alloc] initWithURLRequest:pushServerRequest]; //Declare this as a global variable in a header file wsmain.delegate=self; [wsmain open];

1. 委派方法

-(void)webSocket:(SRWebSocket *)webSocket didReceiveMessage:(id)message { NSLog(@"Message %@",message); } - (void)webSocketDidOpen:(SRWebSocket *)webSocket { NSLog(@"Connected"); }

1. 发送命令

[wsmain send:commands];

通过发送命令，您将收到didReceiveMessage方法的响应。

你看到https://github.com/robbiehanson/CocoaAsyncSocket了吗？socket使用起来很简单

NSString *host = @"10.70.0.22";
int port = 1212;

_socket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)];

NSError *error = nil;
[_socket connectToHost:host onPort:port error:&error];
if (error) {
    NSLog(@"%@",error);
}

委派

-(void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port{
NSLog(@"success");
}
-(void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err{
if (err) {
    NSLog(@"error %@",err);
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        [self connectToServer];
    });
}else{
    NSLog(@"disconnect");
}

}

另一个选择是socket.io。它有用Swift编写的服务器库和iOS客户端库。它的API是相当广泛的。