Enet Simple Example

client.c

#include <stdio.h>

#define _WINSOCK_DEPRECATED_NO_WARNINGS
#define ENET_IMPLEMENTATION
#include "enet.h"

int main()
{
    if (enet_initialize() != 0)
    {
        return 1;
    }

    ENetHost *client = enet_host_create(NULL, 1, 2, 0, 0);
    if (!client)
    {
        return 1;
    }

    ENetAddress address = {.port = 7777};
    enet_address_set_host(&address, "127.0.0.1");

    ENetPeer *peer = enet_host_connect(client, &address, 2, 0);
    if (!peer)
    {
        return 1;
    }

    ENetEvent event;
    if (enet_host_service(client, &event, 5000) <= 0 || event.type != ENET_EVENT_TYPE_CONNECT)
    {
        enet_peer_reset(peer);
        return 1;
    }

    printf("Connected to server\n");
    enet_host_service(client, &event, 5000);
    enet_peer_disconnect(peer, 0);

    uint8_t disconnected = false;
    while (enet_host_service(client, &event, 3000) > 0)
    {
        switch (event.type)
        {
        case ENET_EVENT_TYPE_RECEIVE:
            printf("Received packet from server\n");
            enet_packet_destroy(event.packet);
            break;
        case ENET_EVENT_TYPE_DISCONNECT:
            printf("Disconnected by server\n");
            disconnected = true;
            break;
        default:
            break;
        }
    }

    if (!disconnected)
    {
        printf("Clean disconnect failed, hard disconnecting\n");
        enet_peer_reset(peer);
    }

    enet_host_destroy(client);
    enet_deinitialize();

    return 0;
}

server.c

#include <stdio.h>

#define _WINSOCK_DEPRECATED_NO_WARNINGS
#define ENET_IMPLEMENTATION
#include "enet.h"

int main()
{
    if (enet_initialize() != 0)
    {
        return 1;
    }

    ENetHost *server = enet_host_create(&(ENetAddress){.host = ENET_HOST_ANY, .port = 7777}, 32, 2, 0, 0);
    if (!server)
    {
        return 1;
    }

    printf("Starting server\n");
    ENetEvent event;
    while (enet_host_service(server, &event, 1000) >= 0)
    {
        switch (event.type)
        {
        case ENET_EVENT_TYPE_CONNECT:
            printf("Client connected\n");
            event.peer->data = "Client information";
            break;

        case ENET_EVENT_TYPE_RECEIVE:
            printf("Packet received\n");
            enet_packet_destroy(event.packet);
            break;

        case ENET_EVENT_TYPE_DISCONNECT:
        case ENET_EVENT_TYPE_DISCONNECT_TIMEOUT:
            printf("Client disconnected\n");
            event.peer->data = NULL;
            break;

        case ENET_EVENT_TYPE_NONE:
            break;
        }
    }

    enet_host_destroy(server);
    enet_deinitialize();
    return 0;
}

The following compile (without warnings, unlike the default examples) on windows (assuming enet.h is in the same directory) with clang -o server.exe server.c and clang -o client.exe client.c.