c 客户端并发传输xml给服务器端解析1

///////////////////////////////////////////////////////////////////////////////////
// multi_thread_client.c
///////////////////////////////////////////////////////////////////////////////////

//gcc -I/usr/include/libxml2 -o multi_thread_server multi_thread_server.c -lxml2 -lpthread
//-lxml2 引入xml库

//-lpthread 引入多线程库

//-I/usr/include/libxml2 指定路径
//本文件是客户机多线程多次重复与服务交互的代码
#include <netinet/in.h>    // for sockaddr_in
#include <sys/types.h>    // for socket
#include <sys/socket.h>    // for socket
#include <stdio.h>        // for printf
#include <stdlib.h>        // for exit
#include <string.h>        // for bzero
#include <pthread.h>
#include <sys/errno.h>    // for errno

#include <unistd.h> //define close
#define HELLO_WORLD_SERVER_PORT    6666
#define BUFFER_SIZE 1024
//#include <libxml/parser.h>
// #include <libxml/tree.h>
char * server_IP = NULL;

void * talk_to_server(void * thread_num)
{
    //设置一个socket地址结构client_addr,代表客户机internet地址, 端口
    struct sockaddr_in client_addr;
    bzero(&client_addr,sizeof(client_addr)); //把一段内存区的内容全部设置为0
    client_addr.sin_family = AF_INET;    //internet协议族
    client_addr.sin_addr.s_addr = htons(INADDR_ANY);//INADDR_ANY表示自动获取本机地址
    client_addr.sin_port = htons(0);    //0表示让系统自动分配一个空闲端口
    //创建用于internet的流协议(TCP)socket,用client_socket代表客户机socket

int client_socket=0;
int length=0;
    if (( client_socket = socket(AF_INET,SOCK_STREAM,0)) == -1)
    {
        printf("Create Socket Failed!\n");
        exit(1);
    }
    //把客户机的socket和客户机的socket地址结构联系起来
    if( bind(client_socket,(struct sockaddr*)&client_addr,sizeof(client_addr)))
    {
        printf("Client Bind Port Failed!\n");
        exit(1);
    }

    //设置一个socket地址结构server_addr,代表服务器的internet地址, 端口
    struct sockaddr_in server_addr;
    bzero(&server_addr,sizeof(server_addr));
    server_addr.sin_family = AF_INET;
    //inet_aton比起inet_addr来，可以通过返回值检测IP是否有效
    if(inet_aton(server_IP,&server_addr.sin_addr) == 0) //服务器的IP地址来自程序的参数
    {
        printf("Server IP Address Error!\n");
        exit(1);
    }
    server_addr.sin_port = htons(HELLO_WORLD_SERVER_PORT);
    socklen_t server_addr_length = sizeof(server_addr);
    //向服务器发起连接,连接成功后client_socket代表了客户机和服务器的一个socket连接
    if(connect(client_socket,(struct sockaddr*)&server_addr, server_addr_length) < 0)
    {
        printf("Can Not Connect To %s!\n",server_IP);
        exit(1);
    }

    char buffer[BUFFER_SIZE];
    bzero(buffer,BUFFER_SIZE);
    //从服务器接收数据到buffer中
    if (( length = recv(client_socket,buffer,BUFFER_SIZE,0)) < 0)
    {
        printf("Recieve Data From Server %s Failed!\n", server_IP);
        exit(1);
    }
    printf("From Server %s :\t%s",server_IP,buffer);

    bzero(buffer,BUFFER_SIZE);
    sprintf(buffer,"Hello, World! From Client Thread NUM :\t%d\n",(int)thread_num);
    //向服务器发送buffer中的数据
char bf[] ="<?xml version='1.0' encoding='UTF-8'?><root><yuwen>80</yuwen> <shuxue>100</shuxue></root>";
    send(client_socket,bf,BUFFER_SIZE,0);
    //关闭socket
    close(client_socket);
    pthread_exit(NULL);
}

int main(int argc, char **argv)
{
    if (argc != 2)
    {
        printf("Usage: ./%s ServerIPAddress\n",argv[0]);
        exit(1);
    }
    server_IP = argv[1];
    pthread_t child_thread;
    pthread_attr_t child_thread_attr;
    pthread_attr_init(&child_thread_attr);
    pthread_attr_setdetachstate(&child_thread_attr,PTHREAD_CREATE_DETACHED);
    int i=0;
    for(i=0; i<10000; i++)
    {
        if( pthread_create(&child_thread,&child_thread_attr,talk_to_server, (void *)i) < 0 )
            printf("pthread_create Failed : %s\n",strerror(errno));
    }

    return 0;
}