ubuntu下的TCP网络编程框架

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/*

  ******************************************************************************

  * @file main.c

  * @author  Wang

  * @version V1.0.0

  * @date 9-August-2019

  * @brief This file  call to function in other files

  ********************************************************************************

*/

/* Includes ------------------------------------------------------------------*/

#include <stdio.h>

#include <sys/types.h>

#include <arpa/inet.h>

#include <string.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <unistd.h>

#include <stdlib.h>

/*

  * @brief  main entry point

  * @param  argc : the number of param

  * @param  **argv : command-line pass arguments

  * @retval return 0

*/

int main(int argc , const char **argv)

{

      int socket_fd;

      struct sockaddr_in server_addr;

      char buf[100] = {0};

      int n = 0 , len = sizeof(server_addr);

      if(argc != 3)

      {

            printf(&quot;Usage : %s ip port \n&quot;,argv[0]);

            return -1;

      }

      /* use socket() obtain  sock_fd */

      socket_fd  = socket(AF_INET , SOCK_STREAM , 0);

      if(socket_fd < 0)

      {

            perror(&quot;Fail to socket&quot;);

      }

      /* Fill the information about server */

      server_addr.sin_family = AF_INET;

      server_addr.sin_port = htons(atoi(argv[2]));

      server_addr.sin_addr.s_addr = inet_addr(argv[1]);

      /* request connect server */

      if((connect(socket_fd , (struct sockaddr *)&server_addr , len)) < 0)

      {

            perror(&quot;Fail to connect&quot;);

            return -1;

      }

      printf(&quot;Please input data:\n&quot;);

      while(1)

      {

            memset(buf , 0 , sizeof(buf));

            fgets(buf,sizeof(buf),stdin);

            buf[strlen(buf) - 1] = '\0';

            n = send (socket_fd , buf , strlen(buf) , 0);

            if(n < 0)

            {

                     perror(&quot;Fail to send&quot;);

                     return -1;

            }

            if(strncmp(buf , &quot;quit&quot; , 4) == 0)

                     break;

            printf(&quot;send %d bytes : %s\n&quot;,n,buf);

      }

      close(socket_fd);

      return 0;

}

/**************************************END OF FILE**************************************/

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