Thanks for the help !

We are almost there laugh if i launch as server/client, the messages are sent to all client, but not to himself...

The only i can correct is by adding this code in the startup function :
if(enet_get_connection() != SERVER_MODE)
{
str_cpy(strChat0, strChat1);
str_cpy(strChat1, strChat2);
str_cpy(strChat2, strChat3);
str_cpy(strChat3, strChat4);
str_cpy(strChat4, strChat5);
str_cpy(strChat5, strChat6);
str_cpy(strChat6, strChat7);
str_cpy(strChat7, strChat8);
str_cpy(strChat8, strChat9);
str_cpy(strChat9, tmpMsg);
}

With this code, it's works but it dosnt seems very optimize? i mean it should work whithout in theory no?