[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
> >
> >
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