This is a fork of the original library lsalzman/enet. While original repo offers a stable, time-tested wonderful library, we are trying to change some things, things, which can't be reflected on the main repo, like:
- integrated ipv6 support
- added monotonic time
- applied project-wide code style change
- cleaned up project
- single-header style code
- NPM package distribution
- removed a lot of older methods
- and many other various changes
ENet's purpose is to provide a relatively thin, simple and robust network communication layer on top of UDP (User Datagram Protocol). The primary feature it provides is optional reliable, in-order delivery of packets, and fragmentation.
ENet omits certain higher level networking features such as authentication, lobbying, server discovery, encryption, or other similar tasks that are particularly application specific so that the library remains flexible, portable, and easily embeddable.
Install library using (omit --save if you don't have npm project initilized)
$ npm install enet.c --saveAdd include path to the library node_modules/enet.c/include to your makefile/
Dowload file include/enet.h and just add to your project.
Build the shared library:
$ mkdir build
$ cd build
$ cmake .. -DENET_SHARED=1 -DCMAKE_BUILD_TYPE=Release
$ cmake --build .Use it:
#define ENET_DLL
#include <enet.h>
#include <stdio.h>
int main() {
if (enet_initialize () != 0) {
printf("An error occurred while initializing ENet.\n");
return 1;
}
enet_deinitialize();
return 0;
}Build the static library:
$ mkdir build
$ cd build
$ cmake .. -DENET_STATIC=1 -DCMAKE_BUILD_TYPE=Release
$ cmake --build .Use it:
#include <enet.h>
#include <stdio.h>
int main() {
if (enet_initialize () != 0) {
printf("An error occurred while initializing ENet.\n");
return 1;
}
enet_deinitialize();
return 0;
}In this case, library will be embedded to the project itself.
Make sure you add a define for ENET_IMPLEMENTATION exactly in one source file before including the enet.h.
Here is a simple server demo, it will wait 1 second for events, and then exit if none were found:
#define ENET_IMPLEMENTATION
#include <enet.h>
#include <stdio.h>
int main() {
if (enet_initialize () != 0) {
printf("An error occurred while initializing ENet.\n");
return 1;
}
ENetAddress address = {0};
address.host = ENET_HOST_ANY; /* Bind the server to the default localhost. */
address.port = 7777; /* Bind the server to port 7777. */
#define MAX_CLIENTS 32
/* create a server */
ENetHost * server = enet_host_create(&address, MAX_CLIENTS, 2, 0, 0);
if (server == NULL) {
printf("An error occurred while trying to create an ENet server host.\n");
return 1;
}
printf("Started a server...\n");
ENetEvent event;
/* Wait up to 1000 milliseconds for an event. (WARNING: blocking) */
while (enet_host_service(server, &event, 1000) > 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 = "Client information";
break;
case ENET_EVENT_TYPE_RECEIVE:
printf("A packet of length %lu 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 disconnected.\n", event.peer->data);
/* Reset the peer's client information. */
event.peer->data = NULL;
break;
case ENET_EVENT_TYPE_DISCONNECT_TIMEOUT:
printf("%s disconnected due to timeout.\n", event.peer->data);
/* Reset the peer's client information. */
event.peer->data = NULL;
break;
case ENET_EVENT_TYPE_NONE:
break;
}
}
enet_host_destroy(server);
enet_deinitialize();
return 0;
}More information, examples and tutorials can be found at the official site: http://enet.bespin.org/
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