Linux Socket 收发Json

int main(void)

{

    FILE *fid;

    fid = fopen("/home/dh/workSpace/Learn/cJSON/testCJSON/clientSendData/bin/test.json","r");

    if(fid == NULL)

    {

       printf("读取文件出错");

       return -1;

    }




  //获取文件大小

    fseek (fid , 0 , SEEK_END);

    int lSize = ftell(fid);

    rewind (fid);

    //开辟存储空间

    int num = lSize/sizeof(char);

    char *jsonData = (char*) malloc (sizeof(char)*num);

    if (jsonData == NULL)

    {

        printf("开辟空间出错\n");

        return -1;

    }




    fread(jsonData,sizeof(char),num,fid);




    // if(NULL != jsonData)

    // {

    //   free(jsonData);     //释放内存

    // }




    fclose(fid);




  // 定义socket

    int sockfd = socket(AF_INET,SOCK_STREAM,0);

    // 定义sockaddr_in

    struct sockaddr_in skaddr;

    skaddr.sin_family = AF_INET;

    skaddr.sin_port   = htons(PORT);

    skaddr.sin_addr.s_addr = inet_addr(SERV);




    if( connect(sockfd,(struct sockaddr *)&skaddr, sizeof(skaddr)) < 0 )

    {

        printf("connect error \n");

        exit(1);

    }

    printf("connect server success !!! \n");




    char sendbuf[BUFF] = {0};

    char recvbuf[BUFF] = {0};




    // while( fgets(sendbuf, sizeof(sendbuf), stdin) != NULL )

    // {

    //   send(sockfd, sendbuf, strlen(sendbuf), 0);

    //   if( strcmp(sendbuf,"exit\n") == 0)

    //   {

    //     break;

    //   }

    // }




    while( 1 )

    {

      int sendSize = send(sockfd, jsonData, strlen(jsonData), 0);

      printf("send size %d \n", sendSize);




      //usleep(1000);




      int recvSize = recv(sockfd, recvbuf, sizeof(recvbuf), 0);

      while (-1 == recvSize)

      {

        recvSize = recv(sockfd, recvbuf, sizeof(recvbuf), 0);

      }




      if(recvSize > 0)

      {

        printf("recv data size %d \n", recvSize);




        cJSON *parseRoot = NULL;

        parseRoot = cJSON_Parse(recvbuf);

        char *out = cJSON_Print(parseRoot);   //将json形式打印成正常字符串形式

        printf("%s \n",out);




        if(parseRoot)

        {

            cJSON_Delete(parseRoot);

        parseRoot = NULL;

        }

      }




    }




    close(sockfd);




    puts("!!!Hello World!!!"); /* prints !!!Hello World!!! */

    return EXIT_SUCCESS;

}