Socket transmission

[xasha]

Hi all and thx for your attention,

I'm from Switzerland, so please forgive my english errors !

I'm trying to communicate with a java server on a PC from my iPhone. I use actually the smallsocket wrapper (http://smallsockets.sourceforge.net/) but have tried to do it with this sample of code :

-(IBAction) connect_button {
 
	CFWriteStreamRef writeStream = NULL;
 
	CFStringRef host = CFSTR("X.X.X.X");
	UInt32 port = X;
 
	CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, host, port, NULL, &writeStream);
 
	CFWriteStreamSetProperty(writeStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanTrue);
 
	if(!CFWriteStreamOpen(writeStream)) {
 		NSLog(@"Error Opening Socket");
	}
	else{
 		UInt8 buf[] = "Hello WOrld!";
 		int bytesWritten = CFWriteStreamWrite(writeStream, buf, strlen((char*)buf));
 		NSLog(@"Written: %d", bytesWritten);
 
		if (bytesWritten < 0) {
 			 CFStreamError error = CFWriteStreamGetError(writeStream);
 			 /** How do I print out description? All i get is -1 here. i.e What is perror() equivalent? **/
 		}
  
	}
 
	CFWriteStreamClose(writeStream);
  
}

This is my code with smallsocket :

-(BOOL) connectionTo:(NSString*)host port:(int)port {
	
	socket = [Socket socket];
	@try{
		[socket connectToHostName:host port:port];
		[socket writeString:@"Hello World!"];
		[socket retain];
	}
	@catch (NSException* exception) {
		NSLog(@"socket error");
		socket = nil;
		[socket release];
		return NO;
	}
	
	//** Disconnect **//
	[socket close];
	 
	return YES;
}

In both case, if I don't write the red lines, my server receives the data only when I quit the iphone app... If i close the stream or the socket, it'll receive the data immediately... but I don't want to close it... Is there something wrong in my code that I omitted ?

Thx for reading and for your comment if you have any idea about that !

[ivenoclue]

Your code is fine. The -1 means that the port you are trying to connect to is rejecting the push..


K.

Originally Posted by xasha

Hi all and thx for your attention,

I'm from Switzerland, so please forgive my english errors !

I'm trying to communicate with a java server on a PC from my iPhone. I use actually the smallsocket wrapper (http://smallsockets.sourceforge.net/) but have tried to do it with this sample of code :

-(IBAction) connect_button {
 
	CFWriteStreamRef writeStream = NULL;
 
	CFStringRef host = CFSTR("X.X.X.X");
	UInt32 port = X;
 
	CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, host, port, NULL, &writeStream);
 
	CFWriteStreamSetProperty(writeStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanTrue);
 
	if(!CFWriteStreamOpen(writeStream)) {
 		NSLog(@"Error Opening Socket");
	}
	else{
 		UInt8 buf[] = "Hello WOrld!";
 		int bytesWritten = CFWriteStreamWrite(writeStream, buf, strlen((char*)buf));
 		NSLog(@"Written: %d", bytesWritten);
 
		if (bytesWritten < 0) {
 			 CFStreamError error = CFWriteStreamGetError(writeStream);
 			 /** How do I print out description? All i get is -1 here. i.e What is perror() equivalent? **/
 		}
  
	}
 
	CFWriteStreamClose(writeStream);
  
}

This is my code with smallsocket :

-(BOOL) connectionTo:(NSString*)host port:(int)port {
	
	socket = [Socket socket];
	@try{
		[socket connectToHostName:host port:port];
		[socket writeString:@"Hello World!"];
		[socket retain];
	}
	@catch (NSException* exception) {
		NSLog(@"socket error");
		socket = nil;
		[socket release];
		return NO;
	}
	
	//** Disconnect **//
	[socket close];
	 
	return YES;
}

In both case, if I don't write the red lines, my server receives the data only when I quit the iphone app... If i close the stream or the socket, it'll receive the data immediately... but I don't want to close it... Is there something wrong in my code that I omitted ?

Thx for reading and for your comment if you have any idea about that !