Re: what's problem in GIOChannel ?

[Martyn Russell <ginxd btopenworld com>]

chen.shengqi wrote:

> dear sirs:
>     I use following code to connect to 192.141.140.2:9999, when read data,recvbytes is  28( include data in 
> first packet and 2bytes in second packet ) and ret=1, then recvbytes always return 0,and ret=0, but server 
> should send serval packet, first packet is 26bytes,and following packet is large than 26 bytes, total are 
> large then 1024 bytes. If I use telnet connect to the port, telnet can receive data correctly. How should I 
> use GIOChannel?
>    thanks.
>
>
> int swarefd=-1;
> GIOChannel *SwareSocketChannel=NULL;
>
> void
> on_open1_activate                      (GtkMenuItem     *menuitem,
>                                        gpointer         user_data)
> {
>    printf("open now\n");
>    swarefd = connect_to_sware("192.141.140.6",9999);
>    if (swarefd<0) { printf("connect_to_sware failed\n"); return; }
>    printf("connect_to_sware ok swarefd=%d\n",swarefd);
>    SwareSocketChannel = g_io_channel_unix_new(swarefd);
>    if (SwareSocketChannel==NULL) { printf("g_io_channel_unix_new failed \n"); return; }
>    printf("g_io_channel_unix_new ok \n");
>    g_io_add_watch(SwareSocketChannel, G_IO_IN | G_IO_PRI | G_IO_HUP, read_data_from_socket,NULL);
>    printf("g_io_add_watch ok \n");
>    return;
> }
>
>
> /* read data on socket */
> gboolean read_data_from_socket(GIOChannel *source, GIOCondition condition, gpointer data)
> {
>    gchar recvbuf[2048];
>    GError *err=NULL;
>    GIOStatus ret;
>    int recvbytes=0;
>    ret=g_io_channel_read_chars(source, recvbuf,2048,&recvbytes,&err);
>    printf("condition=%d,read return %d, recvbytes=%d\n",condition,ret,recvbytes);
>    if (recvbytes>0) debug_hex("read_data_from_socket",recvbuf,recvbytes,1);
>    return TRUE;
> }
>
>
> ????^介e??fj)b?      b藏-??iu朕?X??    ???+?m???j)`???????ē????+-?w棹dj?]z鳐?+-


Might I suggest you use gtk_input_add. It is better at handling sockets
than g_io_channel. (unless your application is completely GLIB based and
includes NO GTK, but if that was the case you wouldnt be on this list
right!).

Regards,

Martyn