socket通訊執行個體 (objective-c)

objective-c下,cocatouch架構把原生的socket做了進一步的封裝,也就是stream.

添加CFNetwork架構

初始化通訊端

CFReadStreamRef readStream;CFWriteStreamRef writeStream;CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)@"127.0.0.1", 7777, &readStream, &writeStream);inputStream = ( NSInputStream *)readStream;outputStream = (  NSOutputStream *)writeStream;[inputStream setDelegate:self];[outputStream setDelegate:self];[inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];[outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];[inputStream open];[outputStream open];

訊息處理

- (void)stream:(NSStream *)theStream handleEvent:(NSStreamEvent)streamEvent {NSLog(@"stream event %i", streamEvent);    NSLog(@"%@",theStream);switch (streamEvent) {case NSStreamEventOpenCompleted:NSLog(@"Stream opened");break;case NSStreamEventHasBytesAvailable:            if (theStream == inputStream) {uint8_t buffer[1024];    int len;while ([inputStream hasBytesAvailable]) {len = [inputStream read:buffer maxLength:sizeof(buffer)];if (len > 0) {                         NSString *output = [[NSString alloc] initWithBytes:buffer length:len encoding:NSASCIIStringEncoding]; if (nil != output) {                            NSLog(@"server said: %@", output);[self messageReceived:output];}}}}break;            case NSStreamEventErrorOccurred:NSLog(@"Can not connect to the host!");break;case NSStreamEventEndEncountered:                        [theStream close];            [theStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];            [theStream release];            theStream = nil;break;default:NSLog(@"Unknown event");}    }