我正在尝试从我的iphone模拟器打开套接字连接,并将一个简单的NSString发送到我在端口80中使用java设置的本地主机服务器。
我遇到的问题是,当我在NSOutputStream上写入数据时,在关闭模拟器之前服务器没有接收到它。然后服务器接收数据并抛出此异常java.net.SocketException:Broken pipe
我知道与关闭NSOutputStream和刷新有关,但我怎样才能在Objective c中实现这一点?
我在我的初始ViewController中调用ProtocolCommunication,如下所示:
protocol = [[ProtocolCommunication alloc] init];
[protocol initNetworkCommunication];
[protocol sendData];
ProtocolCommunication class(IOS)
@implementation ProtocolCommunication
@synthesize inputStream, outputStream
- (void) initNetworkCommunication {
CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)@"localhost", 80, &readStream, &writeStream);
inputStream = (NSInputStream *)readStream;
outputStream = (NSOutputStream *)writeStream;
[inputStream setDelegate:self];
[outputStream setDelegate:self];
//do the Looping
[inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[inputStream open];
[outputStream open];
NSLog(@"INIT COMPLETE");
}
- (void) sendData {
NSString *response = @"HELLO from my iphone";
NSData *data = [[NSData alloc] initWithData:[response dataUsingEncoding:NSASCIIStringEncoding]];
[outputStream write:[data bytes] maxLength:[data length]];
}
Java Server
String msgReceived;
try {
ServerSocket serverSocket = new ServerSocket(80);
System.out.println("RUNNING SERVER");
while (running) {
Socket connectionSocket = serverSocket.accept();
BufferedReader inFromClient = new BufferedReader(
new InputStreamReader(connectionSocket.getInputStream()));
DataOutputStream outToClient = new DataOutputStream(connectionSocket.getOutputStream());
msgReceived = inFromClient.readLine();
System.out.println("Received: " + msgReceived);
outToClient.writeBytes("Aloha from server");
outToClient.flush();
outToClient.close();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
任何想法?
答案 0 :(得分:0)
我只需将NS添加到NSString就解决了这个问题:
NSString *response = @"HELLO from my iphone \n"; // This flushes the NSOutputStream so becarefull everyone