[ENet-discuss] Simple chat example
fuzzy spoon
fuzzyspoon at gmail.com
Thu Nov 11 02:28:47 PST 2010
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
>
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