#include <stdio.h>
#include <sys/types.h> /* See NOTES */
#include <sys/socket.h>
#include <arpa/inet.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <netinet/in.h>
// 子线程负责写数据
void *write_data(void *v)
{
int conm_socket = *(int*)v;
char buf[1024];
while (1)
{
struct sockaddr_in client_addr;
socklen_t len = sizeof(client_addr);
ssize_t ret = recvfrom(conm_socket, buf, 1023, 0, (struct sockaddr *)&client_addr, &len);// 收
if (-1 == ret)
{
perror ("read error");
}
if (0 == ret)
{
printf ("客户端退出\n");
break;
}
buf[ret] = '\0';
printf ("%s\n", buf);
}
}
// 主线程负责读数据
void read_data(int conm_socket, char **argv)
{
// 接收方的地址
struct sockaddr_in addr;
memset(&addr, 0, sizeof(struct sockaddr_in));
addr.sin_family = AF_INET; /* Internet地址族 */
addr.sin_port = htons(atoi(argv[2])); /*服务器用的端口号 */
addr.sin_addr.s_addr = inet_addr(argv[1]); /*服务器用的IP地址 */
char buf[1024];
while (1)
{
fgets(buf, 1024, stdin);
sendto(conm_socket, buf, strlen(buf), 0, (struct sockaddr *)&addr, sizeof(addr));
}
}
int main(int argc, char **argv)
{
// 1、创建套接字
int conn_socket = socket(AF_INET, SOCK_DGRAM, 0);
if(-1 == conn_socket)
{
perror("创建套接字失败");
return -1;
}
pthread_t thread;
pthread_create(&thread, NULL, write_data, (void *)&conn_socket);
read_data(conn_socket, argv);
close(conn_socket);
return 0;
}
网络编程——udp客户端
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转载自blog.csdn.net/ypjsdtd/article/details/85689137
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