objective c中的套接字编程

Question

我有一个使用socket的应用程序

在我的应用程序中，我正在尝试建立套接字连接，在连接套接字之后，我需要向服务器发送soap请求。我已经附上了代码。在这方面请帮帮我

 BOOL status;

    CFReadStreamRef readStream;

    CFWriteStreamRef writeStream;

    urlString = @"hoegamestg.hogaming.info";

    // urlString = @"247liveagent.hointeractive.com";



    if (![urlString isEqualToString:@""])

    {
        NSURL *website = [NSURL URLWithString:urlString];

        if (!website)
        {

            NSLog(@"%@ is not a valid URL", urlString);
            status = NO;


        }

        else

        {
            NSLog(@"URL IS VALID%@",website );



            CFStreamCreatePairWithSocketToHost(NULL, (__bridge CFStringRef) [website host], 5654, &readStream, &writeStream);



            //  CFStreamCreatePairWithSocketToHost(NULL, (__bridge CFStringRef) urlString, 5654, &readStream, &writeStream);


            //USE TOLL-FREE BRIDGING FOR CONVERTING CORE-FOUNDATION STREAMS TO NSSTREAMS.


            self.inputStream = (__bridge_transfer NSInputStream *)readStream;
            self.outputStream = (__bridge_transfer NSOutputStream *)writeStream;

            //SET DELEGATES TO STREAMS.

            [self.inputStream setDelegate:self];
            [self.outputStream setDelegate:self];

            //AVOID BLOCKING OPERATIONS BY SCHEDULING THEM ON TO RUN LOOPS.

            [self.inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
            [self.outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];

            //FINALLY OPEN THE STREAMS.

            [self.inputStream open];
            [self.outputStream open];


        }

    }......

委托方法和soap请求

- (void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)eventCode{

    // Start Logging events.
   // NSString *str = [NSString stringWithFormat:@"%d",eventCode];
   // NSMutableString *subscribeTableString;

    NSData *data;

    NSString *soapMessage = [[NSString alloc]init];



    switch (eventCode) {

        case NSStreamEventNone:
            NSLog(@"NSStreamEventNone");
            break;
        case NSStreamEventOpenCompleted:
            NSLog(@"NSStreamEventOpenCompleted");
            break;
        case NSStreamEventHasBytesAvailable:

            NSLog(@"NSStreamEventHasBytesAvailable");

            [self readDataFromStream];

            break;

        case NSStreamEventHasSpaceAvailable:


            NSLog(@"NSStreamEventHasSpaceAvailable");


            soapMessage=[soapMessage stringByAppendingString:[NSString stringWithFormat:@"<subscribe channel=\"table-bc7ire5oi4uhetfd\" ><player id=\"%@\" />",socketValue ]];

           // soapMessage=[soapMessage stringByAppendingString:[NSString stringWithFormat:@"<subscribe channel=\"table-bc7ire5oi4uhetfd\" ><player id= \"c2da1a80c52542dd\" />" ]];




            soapMessage =[soapMessage stringByAppendingString:[NSString stringWithFormat:@"<sessionid id=\"%@\"",socketname]];

            soapMessage =[soapMessage stringByAppendingString:[NSString stringWithFormat:@"></sessionid></subscribe>"]];


            NSLog(@"THE STRING IS : %@", soapMessage);


        data = [[NSData alloc] initWithData:[soapMessage dataUsingEncoding:NSASCIIStringEncoding]];


            [self.outputStream write:[data bytes] maxLength:[data length]];


            NSLog(@"THE STRING IS : %@", self.outputStream);



            [self setMWriteData:[NSData dataWithBytes:(__bridge const void*)soapMessage length:

                                 [soapMessage length]]];


            [self writeDataToStream];


         //   <subscribe channel="table-l8i2hq4jo2hjj9ca"><player id="b82fe3c52020494b" /><sessionid id="246421321cc873d080b550bcc555de0e9d9d29d8cba6f243ec56d38c5785"></sessionid></subscribe>

            break;


        case NSStreamEventErrorOccurred:


            NSLog(@"NSStreamEventErrorOccurred");
            NSLog(@"THE ERROR IS : %@", [aStream streamError]);

            break;


        case NSStreamEventEndEncountered:

            break;

        default:

            break;

    }

}

Answer 1

如果我没记错的话，SOAP是基于HTTP协议的，所以不能使用原始套接字。如果你确实需要SOAP，你可以参考这个问题：how to send/recieve soap object with objective c for ipad

但是，如果只是简单地通过原始套接字发送XML，则需要告诉接收方何时停止读取。

HTTP结束流的方式是将\r\n\r\n添加到字符串的末尾，因此您可以使用它。

另一种方法是发送一个4字节的报头，其中包含要发送的字节数，因此添加以下内容(未测试)：

int s = [data length];
NSData *size = [NSData dataWithBytes:&s length:4];
[self.outputStream write:[size bytes] maxLength:[size length]];

在此之前

[self.outputStream write:[data bytes] maxLength:[data length]];

服务器需要意识到这一点，并将前4个字节视为标头，然后读取标头中提到的字节数量。

我认为在服务器遇到\r\n\r\n时停止读取的情况下使用HTTP的方法会更容易一些