epollserver's Introduction

Simple Epoll-based TCP/UDP Server

Because based epoll interface, only support linx environment.

Features

pure c implement
used buffer can extend it's self, user dosen't need care about it
easy interface to use
use callback to handle recv data

Build

make
make install

the library will installed in install/lib of source dir

Example

simple echo server:

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "epollServer.h"

// echo callback, just send data back to client
void recv_echo_callback(int cliFd, const char *data, unsigned int len)
{
    send(cliFd, data, len, 0);
}

void udp_echo_callback(int fd, struct sockaddr_in *cliaddr, const char *data, unsigned int len)
{
    printf(">>client address = %s:%d\n", inet_ntoa(cliaddr->sin_addr), ntohs(cliaddr->sin_port));
    printf("Recv: %s\n", data);
    sendto(fd, data, len, 0, (struct sockaddr *)cliaddr,sizeof(struct sockaddr_in)); 
}

int main(int argc, char *argv[])
{
    epoll_server_t *evs;

    if(argc < 2){
       printf("Usage: %s [port]\n", argv[0]);
       return -1;                              
    }
    
#if 0  //tcp
    evs = epoll_tcp_server_init(atoi(argv[1]), recv_echo_callback, 1024); 
#else  //udp
    evs = epoll_udp_server_init(atoi(argv[1]), udp_echo_callback, 1024);
#endif
    if(NULL == evs){
        printf("epoll_server_init failed.\n");
        return -1;
    }

    epoll_server_start(evs);
    epoll_server_delete(evs);

    return 0;
}