TCP并发服务器的多进程实现与多线程实现
一、 TCP并发服务器的多进程实现
代码
#include
#define SERVER_IP "192.168.125.11"
#define SERVER_PORT 6666
int deal_client_message(int new_sfd, struct sockaddr_in client_info);
void callBack_zembie(int sig);
int main(int argc, const char *argv[])
{
if (signal(SIGCHLD, callBack_zembie) < 0)
{
ERR_MSG("signal");
return -1;
}
int sfd = socket(AF_INET, SOCK_STREAM, 0);
if (sfd < 0)
{
ERR_MSG("socket");
return -1;
}
struct sockaddr_in server_info;
server_info.sin_addr.s_addr = inet_addr(SERVER_IP);
server_info.sin_port = htons(SERVER_PORT);
server_info.sin_family = AF_INET;
if (bind(sfd, (struct sockaddr *)&server_info, sizeof(server_info)) < 0)
{
ERR_MSG("bind");
return -1;
}
if (listen(sfd, 128) < 0)
{
ERR_MSG("listen");
return -1;
}
struct sockaddr_in client_info;
socklen_t len = sizeof(client_info);
int new_sfd;
pid_t cpid = -1;
while (1)
{
new_sfd = accept(sfd, (struct sockaddr *)&client_info, &len);
if (new_sfd < 0)
{
ERR_MSG("accept");
return -1;
}
printf("[%s : %d]已连接 new_fd = %d \n", inet_ntoa(client_info.sin_addr),
ntohs(client_info.sin_port), new_sfd);
cpid = fork();
if (0 == cpid)
{
close(sfd);
deal_client_message(new_sfd, client_info);
close(new_sfd);
exit(0);
}
else if (cpid < 0)
{
ERR_MSG("fork");
return -1;
}
close(new_sfd);
}
close(sfd);
return 0;
}
void callBack_zembie(int sig)
{
while (waitpid(-1, NULL, WNOHANG) > 0)
;
}
int deal_client_message(int new_sfd, struct sockaddr_in client_info)
{
char buff[128];
ssize_t res = -1;
while (1)
{
bzero(buff, sizeof(buff));
res = recv(new_sfd, buff, sizeof(buff), 0);
if (res < 0)
{
ERR_MSG("recv");
break;
}
else if (0 == res)
{
printf("[%s : %d] 已掉线\n", inet_ntoa(client_info.sin_addr),
ntohs(client_info.sin_port));
break;
}
printf("[%s : %d][message : %s]\n", inet_ntoa(client_info.sin_addr),
ntohs(client_info.sin_port), buff);
if (!strcmp(buff, "exit"))
{
printf("[%s : %d] 断开链接\n", inet_ntoa(client_info.sin_addr),
ntohs(client_info.sin_port));
break;
}
strcat(buff, "---");
if (send(new_sfd, buff, sizeof(buff), 0) < 0)
{
ERR_MSG("send");
break;
}
}
close(new_sfd);
return 0;
}
二、 TCP并发服务器的多线程实现
#include
#define SERVER_IP "192.168.125.11"
#define SERVER_PORT 6666
struct client_information
{
int new_sfd;
struct sockaddr_in info;
};
void *thread1(void *arg);
int main(int argc, const char *argv[])
{
int sfd = socket(AF_INET, SOCK_STREAM, 0);
if (sfd < 0)
{
ERR_MSG("sfd");
return -1;
}
struct sockaddr_in server_info;
server_info.sin_addr.s_addr = inet_addr(SERVER_IP);
server_info.sin_port = htons(SERVER_PORT);
server_info.sin_family = AF_INET;
if (bind(sfd, (struct sockaddr *)&server_info, sizeof(server_info)) < 0)
{
ERR_MSG("bind");
return -1;
}
if (listen(sfd, 128) < 0)
{
ERR_MSG("listen");
return -1;
}
struct client_information client_info;
socklen_t len = sizeof(client_info.info);
pthread_t tid;
while (1)
{
client_info.new_sfd = accept(sfd, (struct sockaddr *)&(client_info.info), &len);
if (client_info.new_sfd < 0)
{
ERR_MSG("accept");
return -1;
}
printf("[%s : %d]已连接 new_fd = %d \n", inet_ntoa(client_info.info.sin_addr),
ntohs(client_info.info.sin_port), client_info.new_sfd);
if (pthread_create(&tid, NULL, thread1, &client_info) < 0)
{
fprintf(stderr, "线程创建出错 __%d__\n", __LINE__);
return -1;
}
pthread_detach(tid);
}
close(client_info.new_sfd);
close(sfd);
return 0;
}
void *thread1(void *arg)
{
struct client_information client_info = *((struct client_information *)arg);
ssize_t res = -1;
char buff[128];
while (1)
{
bzero(buff, sizeof(buff));
res = recv(client_info.new_sfd, buff, sizeof(buff), 0);
if (res < 0)
{
ERR_MSG("recv");
break;
}
else if (0 == res)
{
printf("[%s : %d] 已掉线\n", inet_ntoa(client_info.info.sin_addr),
ntohs(client_info.info.sin_port));
break;
}
printf("[%s : %d][message : %s]\n", inet_ntoa(client_info.info.sin_addr),
ntohs(client_info.info.sin_port), buff);
if (!strcmp(buff, "exit"))
{
printf("[%s : %d] 断开链接\n", inet_ntoa(client_info.info.sin_addr),
ntohs(client_info.info.sin_port));
break;
}
strcat(buff, "---");
if (send(client_info.new_sfd, buff, sizeof(buff), 0) < 0)
{
ERR_MSG("send");
break;
}
}
close(client_info.new_sfd);
pthread_exit(NULL);
}