///udpclient.cpp
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <string.h>
#include <iostream>
int main(int argc, char * argv [ ])
{
int sockfd;
int len,i;
char buf[1024]={0};
unsigned short port = 0x9999;
struct sockaddr_in server_addr;
sockfd = socket(PF_INET,SOCK_DGRAM,0);
if(-1 == sockfd)
{
printf("socket error\n");
return -1;
}
bzero(&server_addr,sizeof(server_addr));
server_addr.sin_family = PF_INET;
server_addr.sin_port = htons(port);
server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
i = 0;
while(1)
{
memset(buf,0,sizeof(buf));
sprintf(buf,"hello,i am client %d",i);
len = sendto(sockfd,buf,strlen(buf),0,(struct sockaddr *)(&server_addr),sizeof(server_addr));
std::cout<<len<<std::endl;
memset(buf,0,sizeof(buf));
sprintf(buf,"fuck fuck fuck %d",i);
len = sendto(sockfd,buf,strlen(buf),0,(struct sockaddr *)(&server_addr),sizeof(server_addr));
std::cout<<len<<std::endl;
sleep(1);
i++;
}
close(sockfd);
return 0;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//udpserver.cpp
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <iostream>
int main(int argc, char * argv [ ])
{
int sockfd;
int len;
struct sockaddr_in server_addr;
unsigned short port = 0x9999;
char recv[1024]={0};
sockfd = socket(PF_INET,SOCK_DGRAM,0);
if(-1 == sockfd)
{
printf("socket error\n");
}
bzero(&server_addr,sizeof(server_addr));
server_addr.sin_family = PF_INET;
server_addr.sin_port = htons(port);
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
if(-1 == bind(sockfd,(struct sockaddr *)(&server_addr),sizeof(server_addr)))
{
printf("bind error\n");
return -1;
}
while(1)
{
len = recvfrom(sockfd,recv,1024,0,NULL,NULL);
if(0 < len)
{
printf("%s\n",recv);
std::cout<<len<<std::endl;
//break;
}
sleep(2);
}
printf("server out");
close(sockfd);
return 0;
}
