這樣：
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <pthread.h>
#define MAXLINE 100;
void *threadsend(void *vargp);
void *threadrecv(void *vargp);?
int main()
{?
int *clientfdp;
clientfdp = (int *)malloc(sizeof(int));
*clientfdp = socket(AF_INET,SOCK_STREAM,0);
struct sockaddr_in serveraddr;
struct hostent *hp;
bzero((char *)&serveraddr,sizeof(serveraddr));
serveraddr.sin_family = AF_INET;
serveraddr.sin_port = htons(15636);
serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");
if(connect(*clientfdp,(struct sockaddr *)&serveraddr,sizeof(serveraddr)) < 0){
printf("connect error\n");
exit(1);
}
pthread_t tid1,tid2;
printf("connected\n");
while(1){
pthread_create(&tid1,NULL,threadsend,clientfdp);
pthread_create(&tid2,NULL,threadrecv,clientfdp);
}
return EXIT_SUCCESS;
}
void *threadsend(void * vargp)
{
//pthread_t tid2;
int connfd = *((int *)vargp);
int idata;
char temp[100];
while(1){
//printf("me: \n ");
fgets(temp,100,stdin);
send(connfd,temp,100,0);
printf(" ? client send OK\n");
}
printf("client send\n");
return NULL;
}
void *threadrecv(void *vargp)
{
char temp[100];
int connfd = *((int *)vargp);
while(1){
int idata = 0;
idata = recv(connfd,temp,100,0);
if(idata > 0){
printf("server :\n%s\n",temp);
}
}
return NULL;
}
擴展資料：
註意事項
linux下編譯多線程代碼時，shell提示找不到 pthread_create函數，原因是 pthread.h不是linux系統默認加載的庫文件，應該使用類似如下gcc命令進行編譯：
gcc echoserver.c -lpthread -o echoserver
只要註意 -lpthread參數就可以了。