Hi, i'm have problem with the writing TCP socket in objective c. i'm having the following error when i then to write a string to my server. some help please?
- error writing to stream <__NSCFOutputStream: 0x102009f0>: Error Domain=NSPOSIXErrorDomain Code=9 "
the following are my code. Thanks inn advance
- (void)setup {
host = // some adderss;
port = // port;
NSURL *url = [NSURL URLWithString:host];
NSLog(@"Setting up connection to %@ : %i", [url absoluteString], port);
CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, (CFStringRef)[url host], port, &readStream, &writeStream);
if(!CFWriteStreamOpen(writeStream)) {
NSLog(@"Error, writeStream not open");
return;
}
[self open];
NSLog(@"Status of outputStream: %i", [outputStream streamStatus]);
return;
}
- (void)open {
NSLog(@"Opening streams.");
CFReadStreamSetProperty(readStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanTrue);
CFWriteStreamSetProperty(writeStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanTrue);
inputStream = (NSInputStream *)readStream;
outputStream = (NSOutputStream *)writeStream;
[inputStream retain];
[outputStream retain];
[inputStream setDelegate:self];
[outputStream setDelegate:self];
[inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[inputStream open];
[outputStream open];
}
- (void)close {
NSLog(@"Closing streams.");
[inputStream close];
[outputStream close];
[inputStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[outputStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[inputStream setDelegate:nil];
[outputStream setDelegate:nil];
[inputStream release];
[outputStream release];
inputStream = nil;
outputStream = nil;
}
- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)event {
NSLog(@"Stream triggered.");
NSLog(@"dddd%i", event);
switch(event) {
case NSStreamEventHasSpaceAvailable: {
if(stream == outputStream) {
NSLog(@"outputStream is ready.");
NSString *s =@"12";
[self writeOut:s];
}
break;
}
case NSStreamEventHasBytesAvailable: {
if(stream == inputStream) {
NSLog(@"inputStream is ready.");
uint8_t buf[1024];
unsigned int len = 0;
len = [inputStream read:buf maxLength:1024];
if(len > 0) {
NSMutableData* data=[[NSMutableData alloc] initWithLength:0];
[data appendBytes: (const void *)buf length:len];
NSString *s = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
[self readIn:s];
[data release];
}
}
break;
}
default: {
NSLog(@"Stream is sending an Event: %i", event);
break;
}
}
}
- (void)readIn:(NSString *)s {
NSLog(@"Reading in the following:");
NSLog(@"%@", s);
}
- (void)writeOut:(NSString *)s {
uint8_t *buf = (uint8_t *)[s UTF8String];
NSInteger nwritten=[outputStream write:buf maxLength:strlen((char *)buf)];
if (-1 == nwritten) {
NSLog(@"Error writing to stream %@: %@", outputStream, [outputStream streamError]);
} else {
NSLog(@"Wrote %ld bytes to stream %@.", (long)nwritten, outputStream);
}
NSLog(@"Writing out the following:");
NSLog(@"%@", s);