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server.c
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server.c
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#include<stdio.h>
#include<stdlib.h>
#include<sys/socket.h>
#include<getopt.h>
#include<netinet/in.h>
#include<strings.h>
#include<stdbool.h>
#include "macros.h"
#include "reactor.h"
#include "client_handler.h"
static struct {
int port;
int backlog;
} config = {
6666, 10
};
static void usage(const char * name) {
fprintf(stderr,"Usage: %s [-p port]\n",name);
exit(1);
}
static void do_getopt(int argc, char *argv[]) {
int c;
while((c = getopt(argc,argv,"hp:")) != -1) {
switch(c) {
case 'p': config.port = atoi(optarg) ; break;
default : usage(*argv) ; break;
}
}
}
static int initialize_socket() {
int fd ,
yes = 1;
struct sockaddr_in addr;
if((fd = socket(PF_INET,SOCK_STREAM,0)) < 0) {
perror("socket");
exit(1);
}
if (setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,&yes,sizeof(int)) < 0) {
perror("setsockopt");
exit(1);
}
addr.sin_family = AF_INET;
addr.sin_port = htons(config.port);
addr.sin_addr.s_addr = 0;
bzero(addr.sin_zero,sizeof(addr.sin_zero));
if(bind(fd,(struct sockaddr *)&addr,sizeof(addr)) < 0) {
perror("socket");
exit(1);
}
if(listen(fd,config.backlog) < 0) {
perror("listen");
exit(1);
}
return fd;
}
static void accept_connection(int fd, void * user) {
int cfd;
struct sockaddr addr;
socklen_t addrlen;
if((cfd = accept(fd,&addr,&addrlen)) < 0) {
perror("accept");
return;
}
client_handler_create(cfd);
}
int main(int argc, char *argv[]) {
int fd;
do_getopt(argc,argv);
fd = initialize_socket();
reactor_initialize();
reactor_add_listener(fd,accept_connection,0);
reactor_run();
exit(0);
}