fedora core 5
g++
服務器端程序：
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <pthread.h>
#include <stdio.h>
#include <string.h>
#include <arpa/inet.h>
#define PORT 8848
#define BACKLOG 5
#define MAXDATASIZE 1000
void process_cli(int connectfd, sockaddr_in client);
void* start_routine(void* arg);
struct ARG {
int connfd;
sockaddr_in client;
};
main()
{
int listenfd, connectfd;
pthread_t thread; //id of thread
ARG *arg;
struct sockaddr_in server; //server's address info
struct sockaddr_in client; //client's
int sin_size;
//create tcp socket
printf("socket.... ");
if ((listenfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
perror("creating socket failed.");
exit(1);
}
int opt = SO_REUSEADDR;
setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
bzero(&server,sizeof(server));
server.sin_family = AF_INET;
server.sin_port = htons(PORT);
server.sin_addr.s_addr = htonl(INADDR_ANY);
printf("bind.... ");
if(bind(listenfd,(struct sockaddr *)&server,sizeof(struct sockaddr)) == -1) {
perror("bind error.");
exit(1);
}
printf("listen.... ");
if(listen(listenfd,BACKLOG) == -1) {
perror("listen() error ");
exit(1);
}
sin_size = sizeof(struct sockaddr_in);
while(1)
{
//accept() using main thread
printf("accepting.... ");
if((connectfd = accept(listenfd,
(struct sockaddr *)&client,
(socklen_t*)&sin_size)) == -1) {
perror("accept() error ");
exit(1);
}
arg = new ARG;
arg->connfd = connectfd;
memcpy((void *)&arg->client, &client, sizeof(client));
//invoke start_routine to handle this thread
printf("thread_creating....");
if(pthread_create(&thread, NULL, start_routine, (void*)arg)){
perror("pthread_creat() error");
exit(1);
}
}
close(listenfd);
}
void process_cli(int connectfd, sockaddr_in client)
{
int num;
char recvbuf[MAXDATASIZE], sendbuf[MAXDATASIZE], cli_name[MAXDATASIZE];
printf("you got a connection from %s. ",inet_ntoa(client.sin_addr) );
//get client's name from client
num = recv(connectfd, cli_name, MAXDATASIZE, 0);
if(num == 0) {
close(connectfd);
printf("Client disconnected. ");
return;
}
cli_name[num - 1] = '
客戶端代碼：
/* cthread.c */
#include <stdio.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>
#include <string.h>
#include <arpa/inet.h>
#include <errno.h>
#include <stdlib.h>
#define PORT 8848
#define MAXDATASIZE 100
void process(FILE *fp, int sockfd);
char* getMessage(char* sendline, int len, FILE* fp);
int main(int argc, char *argv[])
{
int fd;
struct hostent *he;
struct sockaddr_in server; //server's address info
if(argc != 2) {
printf("Usage: %s <ip address> ",argv[0]);
exit(1);
}
if((he = gethostbyname(argv[1])) == NULL){
perror("gethostbyname() error");
exit(1);
}
if((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1){
perror("socket() error");
exit(1);
}
bzero(&server , sizeof(server));
server.sin_family = AF_INET;
server.sin_port = htons(PORT);
server.sin_addr = *((struct in_addr *)he->h_addr);
if(connect(fd, (struct sockaddr *)&server,
sizeof(struct sockaddr)) == -1){
perror("connect() error");
exit(1);
}
process(stdin,fd);
close(fd);
}
void process(FILE *fp, int sockfd)
{
char sendline[MAXDATASIZE],recvline[MAXDATASIZE];
int numbytes;
printf("connected to server. ");
//send name to server
printf("Input name:");
if(fgets(sendline, MAXDATASIZE, fp) == NULL){
printf(" Exit. ");
return;
}
send(sockfd, sendline, strlen(sendline), 0);
//send message to server
//when the string is not NULL , send another!
while(getMessage(sendline,MAXDATASIZE,fp) != NULL) {
send(sockfd, sendline, strlen(sendline), 0);
if((numbytes = recv(sockfd, recvline, MAXDATASIZE, 0)) == 0){
printf("server terminated. ");
return;
}
recvline[numbytes] = '
編譯命令：
g++ -g -o s sthread.c -pthread
g++ -g -o c cthread.c -lc -lnsl
啟動服務器：
./s
啟動客戶端：
./c 127.0.0.1
然后提示輸入客戶機的名字，再就提示輸入一串字符，然后服務器就反轉再發回來。