linux网络编程/多线程多进程服务器与进程线程池

一、多进程服务器
1、服务器端代码：

 #include
#include
#include
#include
#include
#include
#include

//./tcp_server 127.0.0.1 8080
static void usage(const char *proc)
{
    printf("Usage: %s [local_ip] [local_port]\n", proc);
}

int startup(const char* _ip, int _port)
{
    int sock = socket(AF_INET, SOCK_STREAM, 0);
    if (sock < 0)
    {
        perror("socket");
        exit(2);
    }
    struct sockaddr_in local;
    local.sin_family = AF_INET;
    local.sin_port = htons(_port);
    local.sin_addr.s_addr = inet_addr(_ip);
    if (bind(sock, (struct sockaddr*)&local,sizeof(local))< 0)
    {
        perror("bind");
        exit(3);
    }
    if (listen(sock, 10) < 0)
    {
        perror("listen");
        exit(4);
    }
    return sock;
}
// ./ tcp_server ip port
int main(int argc, char *argv[])
{
     if (argc != 3) 
     {
         usage(argv[0]);
         return 1;
     }
     //
     int listen_sock = startup(argv[1], atoi(argv[2]));  //ip,.

     while (1)
     {
         struct sockaddr_in client;
         socklen_t len = sizeof(client);

         int new_sock = accept(listen_sock, \
                 (struct sockaddr*)&client, &len);
         if (new_sock < 0)
         {
             perror("accept");
             continue;
         }
         printf("get a new client, %s: %d\n",inet_ntoa(client.sin_addr), ntohs(client.sin_port));
         //version 2 mut process
         //
        pid_t id = fork();
        if (id < 0)
        {
           close(new_sock);
        }else if (id == 0){//child

            close(listen_sock);
                    if (fork() > 0){
                        exit(0);
                    }
         while(1) {
                 char buf[1024];
                 ssize_t s = read(new_sock, buf, sizeof(buf)-1);                             if (s > 0)
               {
                 buf[s] = 0;
                 printf("client: %s\n", buf);
                 write(new_sock, buf, strlen(buf));
             }else if (s == 0){

                 close(new_sock); 
                 printf("client quit...\n");
                 break;
             }else{
                 perror("read");
                 close(new_sock);
                 break;
             }
         }
         close(new_sock);
        }else{//father
            close(new_sock);
        }

         //version 1
//       while (1)
//       {
//           char buf[1024];
//           ssize_t s = read(new_sock, buf, sizeof(buf)-1);
//           if (s > 0)
//           {
//               buf[s] = 0;
//               printf("client: %s\n", buf);
//               write(new_sock, buf, strlen(buf));
//           }else if (s == 0){
//
//               close(new_sock); 
//               printf("client quit...\n");
//               break;
//           }else{
//               perror("read");
//               close(new_sock);
//               break;
//           }
//       }
     }
}

2、客户端代码：

 #include 
#include 
#include 
#include 
#include 
#include 
#include 


static void usage(const char *proc)
{
    printf("Usage: %s [server_ip] [server_port]\n", proc);
}


// ./ tcp_client server_ip server_port
int main(int argc, char *argv[])
{
   if (argc != 3)
   {
       usage(argv[0]);
       return 1;
   }

   int sock = socket(AF_INET, SOCK_STREAM, 0);
   if (sock < 0)
   {
       perror("socket");
       return 1;
   }
  struct sockaddr_in server;
  server.sin_family = AF_INET;
  server.sin_port = htons(atoi(argv[2]));
  server.sin_addr.s_addr = inet_addr(argv[1]);
  if (connect(sock, (struct sockaddr*)&server,  sizeof(server)) < 0)
  {
      perror("connect");
      return 2;
  }

  char buf[1024];
  while(1)
  {
     printf("Please Enter# ");
     fflush(stdout);
     ssize_t s = read(0, buf, sizeof(buf)-1);
     if (s > 0)
     {
         buf[s-1] = 0;
         write(sock, buf, strlen(buf));
         s = read(sock, buf, sizeof(buf)-1);
         if (s > 0)
         {
             buf[s] = 0;
             printf("server echo# %s\n", buf);
         }
     }
  }

}

服务器端运行指令：
./tcp_server 192.168.1.106 8080
运行结果：

二、多线程服务器
tcp_server服务器端的代码：

#include
#include
#include
#include
#include
#include
#include
#include

//./tcp_server 127.0.0.1 8080
static void usage(const char *proc)
{
    printf("Usage: %s [local_ip] [local_port]\n", proc);
}

int startup(const char* _ip, int _port)
{
    int sock = socket(AF_INET, SOCK_STREAM, 0);
    if (sock < 0)
    {
        perror("socket");
        exit(2);
    }
    struct sockaddr_in local;
    local.sin_family = AF_INET;
    local.sin_port = htons(_port);
    local.sin_addr.s_addr = inet_addr(_ip);
    if (bind(sock, (struct sockaddr*)&local,sizeof(local))< 0)
    {
        perror("bind");
        exit(3);
    }
    if (listen(sock, 10) < 0)
    {
        perror("listen");
        exit(4);
    }
    return sock;
}

void *handlerRequest(void* arg)
{
    int new_sock = (int)arg;
    while(1)
    {
        char buf[1024];
        ssize_t s = read(new_sock, buf, sizeof(buf)-1);
        if (s > 0)
        {
            buf[s] = 0;
            printf("client: %s\n", buf);
            write(new_sock, buf, strlen(buf));
        }else if (s == 0){
             close(new_sock);
             printf("client quit...\n");
             break;
        }else{
         perror("read");
         close(new_sock);
         break;
        }
    }
}
// ./ tcp_server ip port
int main(int argc, char *argv[])
{
     if (argc != 3) 
     {
         usage(argv[0]);
         return 1;
     }
     //
     int listen_sock = startup(argv[1], atoi(argv[2]));  //ip,.

     while (1)
     {
         struct sockaddr_in client;
         socklen_t len = sizeof(client);

         int new_sock = accept(listen_sock, \
                 (struct sockaddr*)&client, &len);
         if (new_sock < 0)
         {
             perror("accept");
             continue;
         }
         printf("get a new client, %s: %d\n",inet_ntoa(client.sin_addr), ntohs(client.sin_port));

         pthread_t id;
         pthread_create(&id, NULL, handlerRequest, (void *)new_sock);
         pthread_detach(id);
         //version 2 mut process
         //
//  pid_t id = fork();
//        if (id < 0)
//      {
//         close(new_sock);
//      }else if (id == 0){//child
//
//          close(listen_sock);
//
//          if (fork() > 0){
//                      exit(0);
//                  }
//       while(1) {
//
//           char buf[1024];
//               ssize_t s = read(new_sock, buf, sizeof(buf)-1);                             if (s > 0)
 //            {
//               buf[s] = 0;
//
//               printf("client: %s\n", buf);
 //              write(new_sock, buf, strlen(buf));
 //              }else if (s == 0){
//
 //              close(new_sock); 
//
//               printf("client quit...\n");
//               break;
//           }else{
//               perror("read");
//
//               close(new_sock);
 //              break;
//           }
//       }
//       close(new_sock);
//      }else{//father
//          close(new_sock);
//      }

         //version 1
//       while (1)
//       {
//           char buf[1024];
//           ssize_t s = read(new_sock, buf, sizeof(buf)-1);
//           if (s > 0)
//           {
//               buf[s] = 0;
//               printf("client: %s\n", buf);
//               write(new_sock, buf, strlen(buf));
//           }else if (s == 0){
//
//               close(new_sock); 
//               printf("client quit...\n");
//               break;
//           }else{
//               perror("read");
//               close(new_sock);
//               break;
//           }
//       }
     }
}

服务器端运行指令：
./tcp_server 192.168.0.179 8080
运行结果：