Getting 405 error in POST NSMutableURLRequest

Question

I have an app which communicates with the server. I need to send a message id to the server. I am using NSMutableURL Request. However, I am getting a 405 error while submitting the request.

Below is the code

messageid=@"1234";
NSURL *aUrl = [NSURL     URLWithString:@"http://myexample.com:8080/Padua/rest/messages/messagetodelete"];
NSMutableURLRequest *deleterequest = [NSMutableURLRequest requestWithURL:aUrl
                                                                 cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                            timeoutInterval:60.0];
NSURLConnection *connection= [[NSURLConnection alloc] initWithRequest:deleterequest
                                                                  delegate:self];

[deleterequest setHTTPMethod:@"POST"];
[deleterequest setValue:[NSString stringWithFormat:@"%d", messageid.length] forHTTPHeaderField:@"Content-Length"];
[deleterequest setValue:@"application/x-www-form-urlencoded charset=utf-8" forHTTPHeaderField:@"Content-Type"];
NSString *postString = messageid;
[deleterequest setHTTPBody:[postString dataUsingEncoding:NSUTF8StringEncoding]];
[connection start];

The server side code is below

@POST
@Consumes("text/plain")
@Path("/messagetodelete")
public void messageToDelete(String messageid){
    //code to delete the message in MongoDB
    System.out.println("R u here for iphone??");
}

Is the code in the client end (iPhone ) correct. The POST consumes a plain text. I believe this is where I am going wrong.

Could anyone please guide me as how to achieve it and make the NSMutableURLRequest accepted by the server?

CouchDeveloper · Accepted Answer · 2013-11-25 14:55:33Z

1

There are these potential issues:

A "delete" request should use the DELETE method.
The definition of the header
[deleterequest setValue:@"application/x-www-form-urlencoded charset=utf-8" forHTTPHeaderField:@"Content-Type"];

is wrong. A MIME type application/x-www-form-urlencoded does not have a parameter, and no charset. A server will ignore this parameter.

The correct way to specify the header is:
```
[deleterequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
```
and use UTF-8 as the character encoding for parameter strings before applying the percent encoding.

When setting the Content-Length header you need to correctly evaluate the length of the body data in bytes. In your code you are setting the number of UTF-16 code units of the string. So, in order to fix that, you would need to do the following:

NSString* postString = ...;
NSString* postData = [postString dataUsingEncoding:NSUTF8StringEncoding];
[deleterequest setValue:[NSString stringWithFormat:@"%d", [postData length]] forHTTPHeaderField:@"Content-Length"];
[deleterequest setHTTPBody: postData];

You need to ensure that parameter strings have been properly encoded.

edited Nov 25, 2013 at 14:55

answered Nov 24, 2013 at 14:48

CouchDeveloper

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1 Comment

Timothy Rajan Over a year ago

Thanks a lot CouchDeveloper. Your answer helped me a lot. The third point made the code to work. Thanks once again.

hunyadym · Accepted Answer · 2013-11-24 14:00:08Z

1

If you accept text/plain on server side, then you have to send the POST request also with content type text/plain. Also, you are missing the semicolon from the Content-type string.

Try to change

[deleterequest setValue:@"application/x-www-form-urlencoded charset=utf-8" forHTTPHeaderField:@"Content-Type"];

into

[deleterequest setValue:@"text/plain; charset=utf-8" forHTTPHeaderField:@"Content-Type"];

EDIT: You also need to move the part where you set the request parameters before the creation of NSURLConnection, because the request is deep-copied, changes on the request after creating the connection has no effect.

edited Nov 24, 2013 at 14:00

answered Nov 24, 2013 at 13:44

hunyadym

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2 Comments

Timothy Rajan Over a year ago

Thanks for your reply. Still getting the same issue. I tried this code previously. Not able to find where the issue is.

Timothy Rajan Over a year ago

Your code made my day. The Edit did all the work. I never thought about the position of the NSURLConnection. Somehow, it slipped from my mind.Thanks mate.

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