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| #include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <arpa/inet.h>
#define MAXLINE 4096
#include <sys/ioctl.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <pthread.h>
int send_to_port = 6667;
int self_port = 6666;
void *get(void *data)
{
int listenfd, connfd;
struct sockaddr_in servaddr;
if( (listenfd = socket(AF_INET, SOCK_STREAM, 0)) == -1 ) {
printf("create socket error: %s(errno: %d)\n",strerror(errno),errno);
return 0;
}
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
servaddr.sin_port = htons(self_port);
if( bind(listenfd, (struct sockaddr*)&servaddr, sizeof(servaddr)) == -1) {
printf("bind socket error: %s(errno: %d)\n",strerror(errno),errno);
return 0;
}
if( listen(listenfd, 10) == -1) {
printf("listen socket error: %s(errno: %d)\n",strerror(errno),errno);
return 0;
}
char buff[4096];
int n;
while(1)
{
if( (connfd = accept(listenfd, (struct sockaddr*)NULL, NULL)) == -1) {
printf("accept socket error: %s(errno: %d)",strerror(errno),errno);
return 0;
}
n = recv(connfd, buff, MAXLINE, 0);
buff[n] = '\0';
printf("recv msg from server: %s", buff);
close(connfd);
}
return 0;
}
char server_addr[333];
void *sent(void *data)
{
int sockfd, n;
struct sockaddr_in servaddr;
char sendline[4096];
while(1)
{
fgets(sendline, 4096, stdin);
if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
printf("create socket error: %s(errno: %d)\n", strerror(errno),errno);
return 0;
}
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(send_to_port);
if( inet_pton(AF_INET, server_addr, &servaddr.sin_addr) <= 0) {
printf("inet_pton error for %s\n", server_addr);
return 0;
}
if( connect(sockfd, (struct sockaddr*)&servaddr, sizeof(servaddr)) < 0) {
printf("connect error: %s(errno: %d)\n",strerror(errno),errno);
return 0;
}
if( send(sockfd, sendline, strlen(sendline), 0) < 0) {
printf("send msg error: %s(errno: %d)\n", strerror(errno), errno);
}
close(sockfd);
}
return 0;
}
int main(int argc, char** argv)
{
if( argc != 2) {
printf("usage: ./client <ip_address>\n");
return 0;
}
strcpy(server_addr, argv[1]);
pthread_t th1, th2;
void *retval;
pthread_create(&th1, NULL, get, 0);
pthread_create(&th2, NULL, sent, 0);
pthread_join(th1, &retval);
pthread_join(th2, &retval);
return 0;
}
|
