LinuxQuestions.org - invalid conversion from `int*' to `socklen

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invalid conversion from `int*' to `socklen_t*'

This code compiles fine in gcc but when I'm using g++ whith some added c++ syntax it wont compile.

Code:

#include <iostream>

#include <stdlib.h>

#include <string.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include "main.h"

using namespace std;





#define MYPORT 3490        //porten som det andra programet connectar till

#define BACKLOG 10



int main(){

        

        //själva initieringen av severn

        int sockfd, new_fd;

        sockaddr_in my_addr;                //min address

        sockaddr_in their_addr;        //deras address

  int sin_size;

        

        sockfd = socket(AF_INET, SOCK_STREAM, 0);

        

        

        my_addr.sin_family = AF_INET;

        my_addr.sin_port = htons(MYPORT);

        my_addr.sin_addr.s_addr = INADDR_ANY;

        memset(&(my_addr.sin_zero), '\0', 8);

        



        



        bind(sockfd, (sockaddr *)&my_addr, sizeof(struct sockaddr));

        //slutet 

        

        //kopplingen

        listen(sockfd, BACKLOG);

        sin_size = sizeof(sockaddr_in);

        

        

        new_fd = accept(sockfd, (sockaddr *)&their_addr, &sin_size);

        shutdown(sockfd, 2); //behöver inte lyssna för ny längre

        send(new_fd, "BANAN\n", 6, 0); 

        

        

        shutdown(new_fd, 2); //stänger av uppkopplingen

        

        

        return 0;

}

Code is taken from beej's socket tutorial.

What line does the error occur on?

ohh sorry, line 42: new_fd = accept(sockfd, (sockaddr *)&their_addr, &sin_size);

Hm, according to the accept manual page, the third parameter needs to be a socklen_t pointer; so I suppose what you'd need to do is cast the int pointer you're passing in to a socklen_t pointer:

new_fd = accept(sockfd, (sockaddr *)&their_addr, (socklen_t*)&sin_size);

Not sure if that's the best way to do it, but it should work...

Seems that there is an alternate version of the accept() function that does in fact take an int pointer, which may be what the author was using.

Thank you very much, it worked like charm.

Thanks , mine works~~