How to send HTTP PUT request from Haxe/Neko?

Question

I have a server running under NekoVM which provide a RESTLike service. I am trying to send a PUT/DELETE request to this server using the following Haxe code :

static public function main()
{
    var req : Http = new Http("http://localhost:2000/add/2/3");
    var bytesOutput = new haxe.io.BytesOutput();

    req.onData = function (data)
    {
        trace(data);
        trace("onData");
    }

    req.onError = function (err)
    {
        trace(err);
        trace("onError");
    }

    req.onStatus = function(status)
    {
        trace(status);
        trace("onStatus");
        trace (bytesOutput);
    }

    //req.request(true); // For GET and POST method

    req.customRequest( true, bytesOutput , "PUT" );

}

The problem is that only the onStatus event is showing something :

Main.hx:32: 200
Main.hx:33: onStatus
Main.hx:34: { b => { b => #abstract } }

Can anyone explain me what I am doing wrong with customRequest ?

customRequest may be asynchrone so maybe you shall wait a little bit for the callback before exiting the main() function? — Martin Delille, Dec 09 '14 at 10:27
I tried by adding a Sys.Sleep(seconds) after customRequest. But nothing more. It's worth noting that request(true) is calling customRequest from Haxe sources. And it's working without a pause. — Maxime Mangel, Dec 09 '14 at 10:39
Depending the framework, sleeping the program may also block callback. Do you have a working example of *onData*? — Martin Delille, Dec 09 '14 at 10:44
Yes if I comment ```customRequest``` and uncomment ```request(true)``` the onData, is working. — Maxime Mangel, Dec 09 '14 at 10:54
Maybe your custom request is invalid? Can you try a request with another tool like http://curl.haxx.se/? — Martin Delille, Dec 10 '14 at 09:34

score 3 · Accepted Answer · answered Dec 20 '14 at 12:58

3

customRequest does not call onData.

After customRequest call is finished either onError was called or first onStatus was called, then response was written to specified output.

answered Dec 20 '14 at 12:58

stroncium

1,430
9
8

score 1 · Answer 2 · answered Feb 02 '19 at 15:25

For those finding these answers (@stroncium's is the correct one) and wondering what the finished code might look like:

static public function request(url:String, data:Any) {
    var req:Http = new haxe.Http(url);
    var responseBytes = new haxe.io.BytesOutput();

    // Serialize your data with your prefered method
    req.setPostData(haxe.Json.stringify(data)); 
    req.addHeader("Content-type", "application/json");

    req.onError = function(error:String) {
        throw error;
    };

    // Http#onData() is not called with custom requests like PUT

    req.onStatus = function(status:Int) {
        // For development, you may not need to set Http#onStatus unless you are watching for specific status codes
        trace(status);
    };

    // Http#request is only for POST and GET
    // req.request(true);

    req.customRequest( true, responseBytes, "PUT" );

    // 'responseBytes.getBytes()' must be outside the onStatus function and can only be called once
    var response = responseBytes.getBytes();

    // Deserialize in kind
    return haxe.Json.parse(response.toString());
}

I made a gist

How to send HTTP PUT request from Haxe/Neko?

2 Answers2