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#include "csapp.h"
#define MAX_ARG_NUM 10
#define MAXLINE 512
#define PEER_PORT 1719
struct Udp2SipMsg
{
int argc;
char *argv[MAX_ARG_NUM];
char buf[MAXLINE];
} udp2sipmsg;
char *sendbuf;
char *recvbuf;
struct sockaddr_in host,peer;
struct hostent *peerp;
char *peername;
int sockfd=0;
int
udp_init(void/*char *peername*/)
{
sendbuf=(char *)malloc(sizeof(udp2sipmsg.buf[MAXLINE]));
recvbuf=(char *)malloc(sizeof(udp2sipmsg.buf[MAXLINE]));
bzero(sendbuf,sizeof(udp2sipmsg.buf[MAXLINE]));
bzero(recvbuf,sizeof(udp2sipmsg.buf[MAXLINE]));
sockfd=socket(AF_INET,SOCK_DGRAM,0);
if(sockfd <=0)
perror("socket error");
printf("sockfd=%d",sockfd);
int optval = 1;
setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char *)&optval, sizeof(optval));
char *peername="heyunping";
if((peerp=gethostbyname(peername))==NULL)
perror("getpeerbyname error");
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