udpsocket.h

linux下c语言的udp通讯小代码。。。不到1k

#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>  
#include <arpa/inet.h> 
#include <string.h>
#include <stdio.h>

int Receivemsg(struct sockaddr_in *clientip,int sock,char* recvbuf,int getmsglength) 
{
   int recvd,structlength;
   structlength = sizeof(struct sockaddr);
   recvd = recvfrom(sock,recvbuf,getmsglength,0,(struct sockaddr *)clientip,&structlength);
   if(recvd!=-1)
     recvbuf[recvd] = '\0';
   return recvd;
}

int Sendmessage(struct sockaddr_in* to_addr,int sock,char* message)
{
    int msg_length;
    if((msg_length = sendto(sock,message,strlen(message),0,(struct sockaddr *)to_addr,sizeof(struct sockaddr)))==-1)
    {
        //perror("send"); 
    }
    return msg_length;
}