CODEWITHSUNDEEP
iphoneiosnetwork-programmingpostnsmutableurlrequest
Sébastien
Sébastien

Reputation: 327

Network error when sending a file through http post with NSMutableURLRequest

I have a problem using setHTTPBodyStream instead of setHTTPBody with a NSMutableURLRequest.

I'm working on code to send large file to a server through http post. With the following portion code, everything works perfectly : 

NSData * mydata = [NSData dataWithContentsOfFile:self.tmpFileLocationToUpload];
[request setHTTPBody:mydata];

If I change it to :

NSData * mydata = [NSData dataWithContentsOfFile:self.tmpFileLocationToUpload];
self.tmpInputStream = [NSInputStream inputStreamWithData:mydata];
[request setHTTPBodyStream: self.tmpInputStream];

Then I always end with a network error : Error - The operation couldn’t be completed. (kCFErrorDomainCFNetwork error 303.)

The goal is at the end to create inputStrem directly from the file to be able to send large file without to load them in memory.

Did I miss something with setHTTPBodyStream use ?

Thanks for your help.

Regards. Sébastien.

Upvotes: 1

Views: 1142

Answers (2)

Rob
Rob

Reputation: 438152

When you use setHTTPBody, it automatically sets the Content-length header of the request, but when you use setHTTPBodyStream, it doesn't, but rather sets Transfer-encoding of chunked. A chunked transfer encoding is used when the length of the stream cannot be determined in advance. (See Chunked transfer encoding.)

When using NSURLConnection in conjunction with setHTTPBodyStream, you can manually set Content-length and it will prevent the Transfer-encoding of chunked (assuming you know the length in advance):

NSString *contentLength = [NSString stringWithFormat:@"%d", [mydata length]];
[request setValue:contentLength forHTTPHeaderField:@"Content-length"];

When using NSURLSession, attempts to manually set Content-length in conjunction with a chunked request may not prevent it from being a chunked request.

Upvotes: 1

Ian
Ian

Reputation: 7558

Try setting the HTTP method (if you're not already). I was able to fix a "kCFErrorDomainCFNetwork error 303" error by adding:

[request setHTTPMethod:@"POST"];

Upvotes: 1

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