Access over Local Area Network

[nakumah]

Hello.

I do not know if this has already been discussed. If it has please point me to the right places

I am trying to access a cowboy server on one computer(A) from another computer (B) over a local area network (my wifi). How can I do this?

The connection between the computers is working fine. I tested accessing a local HTML webpage on one computer from the other and it works well. When i try to access the cowboy server it doesn't work. I get HTTP Error Code 400.

The way I am accessing is as follows: in the browser on Computer B type in the IP address of computer A and its port number (192.168.1.69:8080).

Please help.

[essen]

Please open dev tools in the browser and you will get the headers sent for the request and response that you can paste here. The dispatch list would also help.

[nakumah]

Snip of browser network dev tools

There is no response

Cowboy listener - xxx_app.erl

start(_StartType, _StartArgs) ->
    Dispatch = cowboy_router:compile([
        {
            <<"localhost">>,
            [
                { <<"/">>, hello_handler, [] },  %%  returns text
                { <<"/reduce">>, reduce_handler,[]},  %% returns json data
                { <<"/scan">>, scan_handler,[]} %% returns json data
            ]
        } 
    ]),
    {ok, _} = cowboy:start_clear(
        listener,
        [{port, 8080}],
        #{env => #{dispatch => Dispatch}}
    ),
    vc418_server_sup:start_link().

[essen]

That's because you specify <<"localhost">> as the host in your dispatch list. Doing this means only requests that have Host: localhost (with/without port) will succeed.

To make it work you can accept any host by changing <<"localhost">> to '_'.

[nakumah]

Thank you very much. Let me try this.