Basically, I am sending a POST request with an empty data body:
ASIHTTPRequest *request [ASIHTTPRequest alloc] init];
[request setURL:[NSURL URLWithString:escapedUrlString]];
[request setRequestMethod:@"POST"];
[request addRequestHeader:@"Content-Type" value:@"application/xml"];
[request startSynchronous];
But i am getting this response each time:
Incorrect NSStringEncoding value 0x0000 detected. Assuming NSStringEncodingASCII. Will stop this compatiblity mapping behavior in the near future.
I am wondering if it's mandatory to set post values.
I don't have much experience with the ASIHTTPRequest wrapper but I can see you are initialising it with alloc:init
whilst most examples I've seen have a convenience initialiser requestWithURL:(NSURL*)url
i.e.
ASIHTTPRequest *request = [AIHTTPRequest requestWithURL:escapedUrlString];
At a guess I'd say this convenience initaliser will also set some of the required variables for your post request to work, including NSStringEnconding
.
From the ASIHTTPRequest documentation at http://allseeing-i.com/ASIHTTPRequest/How-to-use#handling_text_encodings
Handling text encodings
ASIHTTPRequest will attempt to read the text encoding of the received data from the Content-Type header. If it finds a text encoding, it will set responseEncoding to the appropriate NSStringEncoding. If it does not find a text encoding in the header, it will use the value of defaultResponseEncoding (this defaults to NSISOLatin1StringEncoding).
When you call [request responseString], ASIHTTPRequest will attempt to create a string from the data it received, using responseEncoding as the source encoding.
As Rog says, use initWithURL or requestWithURL. Anyway, in my case the problem was that I was connecting to a slow server and the request timed out giving the "Incorrect NSStringEncoding value 0x0000 detected" error.
I solved it with:
request.timeOutSeconds = 50;
You can try with more than 50 second if your server is even slower.
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