Hello,
I recently replaced NSURLConnection with NSURLSession in my application, and I have noticed a significant decrease in network speed. I am seeking advice on why this might be happening and how to resolve the issue.
Here is the code before the change:
Old Code:
- (void)execute:(id<STHttpEntity>)entity
{
[entity addHeader:API_HDR_CLASS_NAME value:self.apiClass];
[entity addHeader:API_HDR_METHOD_NAME value:self.apiMethod];
NSMutableURLRequest *req = [self createRequest:entity];
self.connection = [[NSURLConnection alloc]
initWithRequest:req
delegate:self];
[self.connection start];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
[self clearConnectionTimeout];
self.requestData = nil;
if (self.httpStatus != HTTPSTATUS_OK) {
[self callFailedWithStatus:self.httpStatus];
return;
}
[self callSucceeded];
}
And here is the code after the change:
New Code:
- (void)execute:(id<STHttpEntity>)entity
{
[entity addHeader:API_HDR_CLASS_NAME value:self.apiClass];
[entity addHeader:API_HDR_METHOD_NAME value:self.apiMethod];
NSMutableURLRequest *req = [self createRequest:entity];
NSURLSessionConfiguration *sessionConfig = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfig delegate:self delegateQueue:nil];
self.dataTask = [session dataTaskWithRequest:req];
[self.dataTask resume];
}
- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didCompleteWithError:(nullable NSError *)error
{
[self clearConnectionTimeout];
self.requestData = nil;
if (error) {
[self callFailed:error];
} else {
[self callSucceeded];
}
}
Issue: After replacing NSURLConnection with NSURLSession, the network speed has significantly decreased. The new implementation seems to be much slower than the old one.
Questions:
1.What could be the reasons for the significant decrease in network speed after switching to NSURLSession?
2.Are there any specific configurations or best practices for NSURLSession that I should be aware of to improve performance?
3.Is there any known issue with NSURLSession that could cause such a performance drop?
Any insights or suggestions would be greatly appreciated. Thank you in advance for your help!
toshi99
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