Question

When I start up a function within the erl shell, it works fine. When I try to invoke the same function with erl … -s module function, it fails.

The line of code that eventually fails is:

start(Port) ->
    mochiweb_http:start([{port, Port}, {loop, fun dispatch_requests/1}]).

I’m positive that Port is set correctly. My error message is:

=CRASH REPORT==== 17-Jan-2010::00:21:09 ===
  crasher:
    initial call: mochiweb_socket_server:acceptor_loop/1
    pid: <0.65.0>
    registered_name: []
    exception exit: {error,closed}
      in function  mochiweb_socket_server:acceptor_loop/1
    ancestors: [mochiweb_http,<0.1.0>]
    messages: []
    links: []
    dictionary: []
    trap_exit: false
    status: running
    heap_size: 377
    stack_size: 24
    reductions: 93
  neighbours:

I tried the debugger and it lets me step through right up until the line of code above is given. After I pass that, it gives me this crash report.

Any help is greatly appreciated.

Answer 1

Hm, I think that should work.
Are all modules compiled with the same compiler version? IIRC there might be weird errors on the socket level if not.
BTW, you might call your entry point function start which is the default for -s.