///////////////////////////////////////////////////////////////////////////////////
//multi_thread_server.c
///////////////////////////////////////////////////////////////////////////////////
//本文件是多线程并发服务器的代码
#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
#include <string.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#define HELLO_WORLD_SERVER_PORT 6666
#define LENGTH_OF_LISTEN_QUEUE 20
#define BUFFER_SIZE 1024
#define THREAD_MAX 5
void * getxml(char *argv);
void * talk_to_client(void *data)
{
//void* 数据可以转换为任意类型数据
FILE *fp;
int new_server_socket = (int)data;
int length=0;
char buffer[BUFFER_SIZE];
bzero(buffer, BUFFER_SIZE);
char bf[]="";
strcpy(buffer,"hi.从服务器来");
strcat(buffer,"\n"); //C语言字符串连接
//发送buffer中的字符串到new_server_socket,实际是给客户端
send(new_server_socket,buffer,BUFFER_SIZE,0);
bzero(buffer,BUFFER_SIZE);
//接收客户端发送来的信息到buffer中
if(( length = recv(new_server_socket,buffer,BUFFER_SIZE,0)) < 0)
{
printf("Server Recieve Data Failed!\n");
exit(1);
}
printf("\nSocket Num: %d \t %s",new_server_socket, buffer);
//fp = fopen("a.xml", "w");//打开文件
//fwrite(buffer,sizeof(char),strlen(buffer),fp);//写文件
//fclose(fp);//关闭
getxml(buffer);
//send(new_server_socket,buffer,BUFFER_SIZE,0);
//关闭与客户端的连接
close(new_server_socket);
pthread_exit(NULL);
}
void * getxml(char *argv)
{
xmlDocPtr doc=NULL;
xmlNodePtr cur=NULL;
char* name=NULL;
char* value=NULL;
xmlKeepBlanksDefault (0);
//if(argc<2)
// {
// printf("argc must be 2 or above\n");
// return -1;
// }
// doc=xmlParseFile(argv);//创建Dom树
doc=xmlRecoverDoc(argv);//创建Dom树
if(doc==NULL)
{
printf("Loading xml file failed!\n");
exit(1);
}
cur=xmlDocGetRootElement(doc);//获取根节点
if(cur==NULL)
{
printf("empty file!\n");
xmlFreeDoc(doc);
exit(2);
}
//walk the tree
cur=cur->xmlChildrenNode;//get sub node
int a=0;
while(cur !=NULL)
{
name=(char*)(cur->name);
value=(char*)xmlNodeGetContent(cur);
// cout<<"name is: "<<name<<", value is: "<<value<<endl;
printf("\nvalue is: %d \t %s",name, value);
a+=atoi(value);
xmlFree(value);
cur=cur->next;
}
printf("\nresult is: %d \t ",a);
xmlFreeDoc(doc);//释放xml解析库所用资源
xmlCleanupParser();
}
int main(int argc, char **argv)
{
int server_socket=0;
int new_server_socket=0;
//设置一个socket地址结构server_addr,代表服务器internet地址, 端口
struct sockaddr_in server_addr;
bzero(&server_addr,sizeof(server_addr)); //把一段内存区的内容全部设置为0
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
server_addr.sin_port = htons(HELLO_WORLD_SERVER_PORT);
//创建用于internet的流协议(TCP)socket,用server_socket代表服务器socket
server_socket = socket(AF_INET,SOCK_STREAM,0);
if (server_socket==-1)
{
printf("Create Socket Failed!");
exit(1);
}
//把socket和socket地址结构联系起来
if( bind(server_socket,(struct sockaddr*)&server_addr,sizeof(server_addr)))
{
printf("Server Bind Port : %d Failed!", HELLO_WORLD_SERVER_PORT);
exit(1);
}
//server_socket用于监听
if ( listen(server_socket, LENGTH_OF_LISTEN_QUEUE))
{
printf("Server Listen Failed!");
exit(1);
}
int i=0;
while(1) //服务器端要一直运行
{
//定义客户端的socket地址结构client_addr
struct sockaddr_in client_addr;
socklen_t length = sizeof(client_addr);
//接受一个到server_socket代表的socket的一个连接
//如果没有连接请求,就等待到有连接请求--这是accept函数的特性
//accept函数返回一个新的socket,这个socket(new_server_socket)用于同连接到的客户的通信
//new_server_socket代表了服务器和客户端之间的一个通信通道
//accept函数把连接到的客户端信息填写到客户端的socket地址结构client_addr中
if (( new_server_socket = accept(server_socket,(struct sockaddr*)&client_addr,&length))== -1)
{
printf("Server Accept Failed!\n");
break;
}
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);
if( pthread_create(&child_thread,&child_thread_attr,talk_to_client, (void *)new_server_socket)<0)
{
printf("pthread_create Failed : %s\n",strerror(errno));
}
//getxml();
}
//关闭监听用的socket
close(server_socket);
return 0;
}