iOS 開發筆記 - 簡易 TCP Socket Client 筆記

最近有需求需要從裝置發 socket request 到指定的 socket server 上，丟一串字串就結束連線。

簡易範例：

- (void)sentAMessageTo:(NSString *)server_ip port:(int)port message:(NSString *)message
{
    NSInputStream *inputStream;
    NSOutputStream *outputStream;
    CFReadStreamRef readStream;
    CFWriteStreamRef writeStream;
    CFStreamCreatePairWithSocketToHost(NULL, (__bridge CFStringRef)server_ip, port, &readStream, &writeStream);
    
    inputStream = (__bridge NSInputStream *)readStream;
    outputStream = (__bridge NSOutputStream *)writeStream;
    
    [inputStream open];
    [outputStream open];
    
    NSData *data = [[NSData alloc] initWithData:[message dataUsingEncoding:NSASCIIStringEncoding]];
    [outputStream write:[data bytes] maxLength:[data length]];
    
    [outputStream close];
    [inputStream close];
}


此例應該算使用 ARC 方案吧，沒去管記憶體。