[ENet-discuss] Simple chat example

fuzzy spoon fuzzyspoon at gmail.com
Thu Nov 11 03:47:56 PST 2010


The tutorials are more than enough usually (as you just experienced).
I think samples are a good idea, though. They would just need to be a lot
more documented and clearer code imo :)


On Thu, Nov 11, 2010 at 1:41 PM, Shafqat Bhuiyan <priomsrb at gmail.com> wrote:

> Thanks.
>
> It'd be great if there was an examples page on the website or maybe a
> samples directory in the source distribution so it's easier for people
> to learn.
>
> On Thu, Nov 11, 2010 at 11:28 PM, fuzzy spoon <fuzzyspoon at gmail.com>
> wrote:
> > Thanks for taking the time to make an example :)
> > Im sure it will help someone along the way.
> > On Thu, Nov 11, 2010 at 12:21 PM, Shafqat Bhuiyan <priomsrb at gmail.com>
> > wrote:
> >>
> >> Hi,
> >>
> >> I was looking around for some example programs that use enet
> >> but like others I couldn't find one. So I tried to make one myself.
> >>
> >> This is a simple chat program. Multiple clients can join the server
> >> and write messages. Messages will be received by all clients
> >> (including the one that sent it).
> >>
> >> Most of the code is a direct copy/paste from the enet tutorial. The
> >> code is definitely not perfect but is suitable for a beginner to look
> >> around in.
> >>
> >>
> >>
> >> /* server.cpp */
> >> #include <stdio.h>
> >> #include <enet/enet.h>
> >>
> >> int main (int argc, char *argv[])
> >> {
> >>   ENetAddress address;
> >>   ENetHost *server;
> >>   ENetEvent event;
> >>   int serviceResult;
> >>
> >>   puts ("Starting server");
> >>
> >>   if (enet_initialize () != 0)
> >>   {
> >>       puts ("Error initialising enet");
> >>       exit (EXIT_FAILURE);
> >>   }
> >>
> >>
> >>   /* Bind the server to the default localhost.     */
> >>   /* A specific host address can be specified by   */
> >>   /* enet_address_set_host (& address, "x.x.x.x"); */
> >>   address.host = ENET_HOST_ANY;
> >>   /* Bind the server to port 1234. */
> >>   address.port = 1234;
> >>
> >>   server = enet_host_create (&address,
> >>                             32,   /* number of clients */
> >>                             2,    /* number of channels */
> >>                             0,    /* Any incoming bandwith */
> >>                             0);   /* Any outgoing bandwith */
> >>
> >>   if (server == NULL)
> >>   {
> >>       puts ("Could not create server host");
> >>       exit (EXIT_FAILURE);
> >>   }
> >>
> >>
> >>   while (true)
> >>   {
> >>       serviceResult = 1;
> >>
> >>       /* Keep doing host_service until no events are left */
> >>       while (serviceResult > 0)
> >>       {
> >>           /* Wait up to 1000 milliseconds for an event. */
> >>           serviceResult = enet_host_service (server, &event, 1000);
> >>
> >>           if (serviceResult > 0)
> >>           {
> >>
> >>               switch (event.type)
> >>               {
> >>               case ENET_EVENT_TYPE_CONNECT:
> >>                   printf ("A new client connected from %x:%u.\n",
> >>                           event.peer -> address.host,
> >>                           event.peer -> address.port);
> >>
> >>                   /* Store any relevant client information here. */
> >>                   event.peer->data = (void*)"Client information";
> >>
> >>                   break;
> >>
> >>               case ENET_EVENT_TYPE_RECEIVE:
> >>                   printf ("A packet of length %u containing '%s' was "
> >>                           "received from %s on channel %u.\n",
> >>                           event.packet -> dataLength,
> >>                           event.packet -> data,
> >>                           event.peer -> data,
> >>                           event.channelID);
> >>
> >>                   /* Tell all clients about this message */
> >>                   enet_host_broadcast (server, 0, event.packet);
> >>
> >>                   break;
> >>
> >>               case ENET_EVENT_TYPE_DISCONNECT:
> >>                   printf ("%s disconected.\n", event.peer -> data);
> >>
> >>                   /* Reset the peer's client information. */
> >>
> >>                   event.peer -> data = NULL;
> >>
> >>                   break;
> >>               }
> >>           }
> >>           else if (serviceResult > 0)
> >>           {
> >>               puts ("Error with servicing the server");
> >>               exit (EXIT_FAILURE);
> >>           }
> >>       }
> >>
> >>   }
> >>
> >>   enet_host_destroy (server);
> >>   enet_deinitialize ();
> >>
> >>   return 0;
> >>
> >> }
> >>
> >>
> >>
> >> /************************************************/
> >>
> >>
> >>
> >> /* client.cpp */
> >> #include <stdio.h>
> >> #include <string.h>
> >> #include <enet/enet.h>
> >>
> >>
> >> int main (int argc, char* argv[]) {
> >>   ENetHost *client;
> >>   ENetAddress address;
> >>   ENetPeer *peer;
> >>   ENetEvent event;
> >>   char message[1024];
> >>   int serviceResult;
> >>
> >>   puts ("Starting client");
> >>
> >>   if (enet_initialize () != 0) {
> >>       fprintf (stderr, "Error initialising enet");
> >>       exit (EXIT_FAILURE);
> >>   }
> >>
> >>   client = enet_host_create (NULL, /* create a client host */
> >>                              1,    /* number of clients */
> >>                              2,    /* number of channels */
> >>                              57600 / 8,    /* incoming bandwith */
> >>                              14400 / 8);   /* outgoing bandwith */
> >>
> >>   if (client == NULL) {
> >>       fprintf (stderr, "Could not create client host");
> >>       exit (EXIT_FAILURE);
> >>   }
> >>
> >>
> >>   enet_address_set_host (&address, "localhost");
> >>   address.port = 1234;
> >>
> >>   peer = enet_host_connect (client,
> >>                             &address,    /* address to connect to */
> >>                             2,           /* number of channels */
> >>                             0);          /* user data supplied to
> >> the receiving host */
> >>
> >>   if (peer == NULL) {
> >>       fprintf (stderr, "No available peers for initiating an ENet "
> >>                "connection.\n");
> >>       exit (EXIT_FAILURE);
> >>   }
> >>
> >>
> >>   /* Try to connect to server within 5 seconds */
> >>   if (enet_host_service (client, &event, 5000) > 0 &&
> >>       event.type == ENET_EVENT_TYPE_CONNECT)
> >>   {
> >>       puts ("Connection to server succeeded.");
> >>   }
> >>   else
> >>   {
> >>       /* Either the 5 seconds are up or a disconnect event was */
> >>       /* received. Reset the peer in the event the 5 seconds   */
> >>       /* had run out without any significant event.            */
> >>       enet_peer_reset (peer);
> >>
> >>       fprintf (stderr, "Connection to server failed.");
> >>       exit (EXIT_FAILURE);
> >>   }
> >>
> >>   while (true)
> >>   {
> >>       serviceResult = 1;
> >>
> >>       /* Keep doing host_service until no events are left */
> >>       while (serviceResult > 0)
> >>       {
> >>           serviceResult = enet_host_service (client, &event, 0);
> >>
> >>           if (serviceResult > 0)
> >>           {
> >>               switch (event.type)
> >>               {
> >>               case ENET_EVENT_TYPE_CONNECT:
> >>                   printf ("A new client connected from %x:%u.\n",
> >>                           event.peer -> address.host,
> >>                           event.peer -> address.port);
> >>
> >>                   event.peer->data = (void*)"New User";
> >>                   break;
> >>
> >>               case ENET_EVENT_TYPE_RECEIVE:
> >>                   printf ("A packet of length %u containing '%s' was "
> >>                           "received from %s on channel %u.\n",
> >>                           event.packet -> dataLength,
> >>                           event.packet -> data,
> >>                           event.peer -> data,
> >>                           event.channelID);
> >>
> >>                   /* Clean up the packet now that we're done using it.
> */
> >>                   enet_packet_destroy (event.packet);
> >>
> >>                   break;
> >>
> >>               case ENET_EVENT_TYPE_DISCONNECT:
> >>                   printf ("%s disconected.\n", event.peer -> data);
> >>
> >>                   break;
> >>               }
> >>           }
> >>           else if (serviceResult > 0)
> >>           {
> >>               puts ("Error with servicing the client");
> >>               exit (EXIT_FAILURE);
> >>           }
> >>
> >>       }
> >>
> >>
> >>       printf ("Say> ");
> >>       gets (message);
> >>
> >>       if (strcmp (message, "exit") == 0 ||
> >>           strcmp (message, "quit") == 0) {
> >>           break;
> >>       }
> >>
> >>       if(strlen(message) > 0) {
> >>           ENetPacket *packet = enet_packet_create (message, strlen
> >> (message) + 1, ENET_PACKET_FLAG_RELIABLE);
> >>           enet_peer_send (peer, 0, packet);
> >>       }
> >>
> >>   }
> >>
> >>   enet_peer_disconnect (peer, 0);
> >>
> >>   /* Allow up to 3 seconds for the disconnect to succeed */
> >>   /* and drop any packets received packets */
> >>   while (enet_host_service (client, & event, 3000) > 0)
> >>   {
> >>
> >>       switch (event.type)
> >>       {
> >>       case ENET_EVENT_TYPE_RECEIVE:
> >>           enet_packet_destroy (event.packet);
> >>           break;
> >>
> >>       case ENET_EVENT_TYPE_DISCONNECT:
> >>           puts ("Disconnection succeeded.");
> >>           break;
> >>       }
> >>   }
> >>
> >>
> >>   enet_host_destroy (client);
> >>   enet_deinitialize ();
> >>
> >>   return 0;
> >>
> >> }
> >> _______________________________________________
> >> ENet-discuss mailing list
> >> ENet-discuss at cubik.org
> >> http://lists.cubik.org/mailman/listinfo/enet-discuss
> >
> >
> > _______________________________________________
> > ENet-discuss mailing list
> > ENet-discuss at cubik.org
> > http://lists.cubik.org/mailman/listinfo/enet-discuss
> >
> >
> _______________________________________________
> ENet-discuss mailing list
> ENet-discuss at cubik.org
> http://lists.cubik.org/mailman/listinfo/enet-discuss
>
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