Re: g_io_channel usage

[Martin Bammer <e9525103 stud4 tuwien ac at>]

You have to return with a TRUE-Value from the read-function. When you return 
with a FALSE-Value the callback function will be unregistered.

> Hello everyone,
>
> I encountered following problem using g_io_channel (Glib 2.0).
> I was interested how the new API functions worksand wrote a little
> example app. It contains only a gtk_entry, which you can write text to.
> The text is sent to the receiver and printed with g_print().
>
> It looks like this:
>
> Server:
> 1, create server socket
> 2, accept client -> get socket
> 3, close server socket
> 4, continue with <Together>
>
> Client:
> 1, create socket
> 2, connect with server
> 3, continue with <Together>
>
> <Together>
> 1, create g_io_channel (g_io_channel_unix_new())
> 2, do not use buffered channel (g_io_channel_set_buffered())
> 3, do not use encoding (g_io_channel_set_encoding(chan,NULL))
> 3, register function for G_IO_IN condition (g_io_add_watch())
> 4, register function for G_IO_HUP condition
> 5, register other function for text entry etc...
> 6, run gtk_main
>
> The problem is, that when I write a text to the entry, it is corretly
> sent to the other side only for the first time. Doing the same once again
> results text being correctly sent, but not comming to the receiver
> (G_IO_IN condition is not valid). When I try to send data in reversed
> direction, it also works only once. Did anyone met this?
>
> When I was thinking about it I came to the select() call - it also has
> some decriptors registered and after succesfull call they can be
> verified etc. But they are also removed from the set and the set mut be
> refreshed. I tried the same i this case... After reading data from
> channel I use g_io_add_watch() again. It seems to work but.. is it
> correct?
>
> If anyone can help, I will be very thankfull. I also can pass my code to
> the interested. Also any properly working C code would be heplful.
> Thank you in advance.
> Michal
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