我正在制作一个发送UDP
数据包的应用程序,以便打开LED bulb
。当我连接到由Wifi bridge
创建的Ad-hoc
时,我能够执行所有操作。
现在,我要配置Wifi bridge
,使其可以连接到我的主路由器。我设置了AT命令来执行此过程,但不知何故,我无法从Wifi bridge
接收到我发送给它的命令的响应。
有关程序如下:
LAN上的所有Wifi网桥都将使用其详细信息进行响应。响应是"10.10.100.254,ACCF232483E8"
发送UDP数据包的代码如下
-(void)configureWifi{
counter++;
NSString *host = @"10.10.100.255";
if ([host length] == 0)
{
[self logError:@"Address required"];
return;
}
int port = 48899; //[portField.text intValue];
if (port <= 0 || port > 65535)
{
[self logError:@"Valid port required"];
return;
}
NSString *msg = @"Link_Wi-Fi";
NSData *data = [msg dataUsingEncoding:NSUTF8StringEncoding];
NSLog(@"the message sent is %@", data);
[udpSocket sendData:data toHost:host port:port withTimeout:-1 tag:tag];
}
现在,为了设置套接字并接收数据,我使用了这两个委托方法:
- (void)setupSocket
{
// Setup our socket.
// The socket will invoke our delegate methods using the usual delegate paradigm.
// However, it will invoke the delegate methods on a specified GCD delegate dispatch queue.
//
// Now we can configure the delegate dispatch queues however we want.
// We could simply use the main dispatc queue, so the delegate methods are invoked on the main thread.
// Or we could use a dedicated dispatch queue, which could be helpful if we were doing a lot of processing.
//
// The best approach for your application will depend upon convenience, requirements and performance.
//
// For this simple example, we're just going to use the main thread.
udpSocket = [[GCDAsyncUdpSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
NSError *error = nil;
if (![udpSocket bindToPort:0 error:&error])
{
[self logError:FORMAT(@"Error binding: %@", error)];
return;
}
if (![udpSocket beginReceiving:&error])
{
[self logError:FORMAT(@"Error receiving: %@", error)];
return;
}
[self logInfo:@"Ready"];
}
为了接收数据,这是在发送UDP数据包后调用的方法。这是GCDAsyncUdpSocket
类的委托方法,我在项目中使用它来发送和接收UDP包。
- (void)udpSocket:(GCDAsyncUdpSocket *)sock didReceiveData:(NSData *)data
fromAddress:(NSData *)address
withFilterContext:(id)filterContext
{
NSString *msg = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
if (msg)
{
[self logMessage:FORMAT(@"RECV: %@", msg)];
}
else
{
NSString *host = nil;
uint16_t port = 0;
[GCDAsyncUdpSocket getHost:&host port:&port fromAddress:address];
[self logInfo:FORMAT(@"RECV: Unknown message from: %@:%hu", host, port)];
}
}
一旦我能够接收到响应,我将能够发送下一个AT命令,以便配置网桥。
谢谢。任何帮助都将不胜感激。
https://stackoverflow.com/questions/29713553
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