cant read data from tcp port - objective-c

Question

i have written code for reading data from tcp port 3000
- (BOOL)connect
{
int cIter = 0;
while(cIter++<5)
{
CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
#try{
CFStreamCreatePairWithSocketToHost(NULL, (__bridge CFStringRef)M_CONNECT_HOST, M_CONNECT_PORT, &readStream, &writeStream);
}
#catch (NSException *ex) {
}
if(readStream!=nil && writeStream!=nil)
{
m_sin = (__bridge NSInputStream *)readStream;
m_sout = (__bridge NSOutputStream *)writeStream;
[m_sin setDelegate:self];
[m_sout setDelegate:self];
[m_sin scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[m_sout scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[m_sin open];
[m_sout open];
return true;
}
}
return false;
}
When i write to tcp output stream its working but when i try to read from the tcp input stream its not reading i mean my
[m_sin read:t maxlength:10];
is always returning -1 (where m_sin is my input stream)
And i m passing the data to the tcp port by terminal
please Help me

Answer 1

Implement the handleEvent and check it out the eventCode
-(void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)eventCode{
switch (eventCode) {
case NSStreamEventOpenCompleted:
NSLog(#"stream opened");
break;
case NSStreamEventHasBytesAvailable:
if (aStream == inputStream) {
// read it in
unsigned int len = 0;
len = [inputStream read:buf maxLength:1019];
buf[len] = '\0';
if(!len) {
if ([aStream streamStatus] != NSStreamStatusAtEnd){
NSLog(#"Failed reading data from peer");
}
} else {
//I am reading UIImage here
NSData *data = [NSData dataWithBytes:(const void *)buf length:1019];
UIImage *image = [UIImage imageWithData:data];
self.transferedimage.image = image;
}
}
break;
case NSStreamEventErrorOccurred:
NSLog(#"stream ErrorOccurred");
break;
case NSStreamEventEndEncountered:
NSLog(#"stream EndEncountered");
break;
default:
NSLog(#"stream UnKnown");
break;
}
}