Re: [gnet] Gnet-2.0.7 and win32

["Hubert Sokolowski" <h sokolowski wsisiz edu pl>]

Hi!

> I'm trying to use libgnet-2.0.7 (and GTK+-2.4) for a GUI program.
> Without going into too much detail, the GUI basically opens a TCP
> connection to a server and starts reading and writing ascii-text
> lines to/from it.
>
> This works good when the GUI client runs on Linux, but on win32
> I run into problems..
>
>
> While testing I just use netcat for the server like this:
>
>  nc -l -p 1234
>
> First I looked into the echoclient example programs and they all
> works good in Linux, but when compiling them on win32 (with MinGW)
> I'm having various problems.
>
> Browsing the gnet list I see that there seems to be problems with
> iochannels and glib on win32. The echoclient that is closest to working
> is echoclient-async.c.
>
> On Linux all strings typed in the echoclient-async window directly shows
> up
> in the netcat window and vice versa. But on Win32 (Windows XP service pack
> 1)
> only lines that are typed in the echoclient-async window are directly
> sent.
> Lines typed in the netcat window seems to buffer up somewhere. When I
> break the
> connection by typing Ctrl-C in the netcat window then all lines that
> was previously typed in the netcat window show up in the echoclient-async
> window. I tried running the netcat command on both Linux and Windows and
> the result is the same.
>
> I modified the code to use only one io watch to try to isolate the
> problem.
> In the async_client_connfunc callback I just have:
>
>  iochannel = gnet_tcp_socket_get_io_channel(socket);
>  g_io_add_watch(iochannel, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL,
>                 async_client_iofunc, NULL);
>
> But async_client_iofunc dont get called until the connection is hanged up
> by typing Ctrl-C in the netcat "server" window.
>
> Then, just for test, I tried to "manually" read and write lines by
> inserting
> this directly after the g_io_add_watch line:
>
>  gnet_io_channel_readline_strdup(iochannel, &str, &n);
>  if (str != NULL) {
>     g_print("read line: %s\n", str);
>     g_free(str);
>  }
>
>  gnet_io_channel_writen(iochannel, "Hello, netcat!\n", 15, &n);
>
>
> And this works on both Linux and Windows. After the first line is sent
> from netcat
> then the client responds with "Hello, netcat!". But then no more lines are
> received
> from netcat until the connection is killed...
>

I think the problem with async echo example from gnet is on the server
side, as it never gets (condition & G_IO_IN) condition fulfilled. the same
with glib-2.4.7 and glib-2.6.3.
I was using gnet-2 on windows in a GTK application and I had no problems
with it. you can get this code here
http://sourceforge.net/project/showfiles.php?group_id=62830&package_id=110666

regards
hs