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PONSUrlConnection in NSThread - No delegate is executed!
 

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    <p>I am using an NSURLConnection in an NSThread but none of the NSURLConnection's delegate methods are executed! I have a main method in my NSTread subclass and a while loop that keeps the thread active. Any help? </p> <p>Sorry for all of this code but I think its the best way to describe my problem. So this is an object that does the async connection calling <code>createConnectionWithPath:userObjectReference</code></p> <pre><code>@interface WSDAsyncURLConnection : NSObject { NSMutableData *receivedData; NSDate *connectionTime; NSURLConnection *connection; id _theUserObject; } @property (nonatomic, retain) NSMutableData *receivedData; @property (nonatomic, retain) NSDate *connectionTime; @property (nonatomic, assign) NSURLConnection *connection; - (void)createConnectionWithPath:(NSString *)thePath userObjectReference:(id)userObject; @end #import "WSDAsyncURLConnection.h" @implementation WSDAsyncURLConnection @synthesize connectionTime, receivedData, connection; - (void) terminate { if (self.connection) { [self.connection release]; self.connection = nil; } } - (void) createConnectionWithPath:(NSString *)thePath userObjectReference:(id)userObject; { _theUserObject = userObject; NSURLRequest *theRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:thePath] cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData timeoutInterval:60]; self.connection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES]; if (self.connection) { /* record the start time of the connection */ self.connectionTime = [NSDate date]; /* create an object to hold the received data */ self.receivedData = [NSMutableData data]; } } - (void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { [self.receivedData setLength:0]; } - (void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { /* appends the new data to the received data */ [self.receivedData appendData:data]; } - (void) connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { [self terminate]; } - (void) connectionDidFinishLoading:(NSURLConnection *)connection { // displays the elapsed time in milliseconds NSTimeInterval elapsedTime = [[NSDate date] timeIntervalSinceDate:self.connectionTime]; // displayes the length of data received NSUInteger length = [self.receivedData length]; NSString* aStr = [[NSString alloc] initWithData:receivedData encoding:NSASCIIStringEncoding]; [self terminate]; [[NSNotificationCenter defaultCenter] postNotificationName:WSDAsynchURLConnectionDidFinished object:_theUserObject userInfo:[NSDictionary dictionaryWithObject:aStr forKey:@"urlResponseString"]]; NSLog(@"ti=%f, l=%d, response=%@", elapsedTime, length, aStr); } @end </code></pre> <p>This code is mostly from an apple's example project and it works fine outside an NSThread. But when I use it in the following thread subclass no delegate method is executed !!</p> <pre><code>@implementation IncomingThread - (void) main { NSAutoreleasePool *poool = [[NSAutoreleasePool alloc] init]; // I start the URLConnection here ... But no delegate is executed ! [urlConn createConnectionWithPath:@"http://localhost:8888" userObjectReference:nil]; while (![self isCancelled]) { [NSThread sleepForTimeInterval:3.]; } [poool release]; } - (id) init { self = [super init]; if (self != nil) { urlConn = [[WSDAsyncURLConnection alloc] init]; } return self; } - (void) dealloc { NSLog(@"deallocating (%@)...", [self className]); [urlConn release]; [super dealloc]; } </code></pre>
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