sendto: Invalid argument netbsd

This is a discussion on sendto: Invalid argument netbsd within the C Programming forums, part of the General Programming Boards category; hi all, I've a program which worked on linux, but after porting on netbsd I take this error.. Code: sent=sendto(sock, ...

  1. #1
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    sendto: Invalid argument netbsd

    hi all,
    I've a program which worked on linux, but after porting on netbsd I take this error..
    Code:
    sent=sendto(sock, buf, buf_siz, 0, (struct sockaddr *) &sin, sizeof(sin));
    why?
    I did verifying of values which's take function sendto, but they allright.
    sent receive -1

  2. #2
    and the hat of wrongness Salem's Avatar
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    And you expect us to do what, with one line of code.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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    I would say the socket argument is invalid at runtime, is it correctly checked earlier in the code? Perhaps it worked on linux because everything went fine in the few cases you used it; or perhaps the ported version introduces some bugs if you changed several things.

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    Quote Originally Posted by root4 View Post
    I would say the socket argument is invalid at runtime, is it correctly checked earlier in the code? Perhaps it worked on linux because everything went fine in the few cases you used it; or perhaps the ported version introduces some bugs if you changed several things.
    yes, I change only struct elements, because linux and netbsd sockets differently.
    Either of element has a similar on netbsd socket, but that tcp_h->res1, it's exist only on linux and I was constrained // marked it.
    I've change structure objects like this...
    after on linux
    ip_h->daddr
    tcp_h->source
    before on netbsd
    ip_h->ip_dst.s_addr
    tcp_h->th_sport
    but I cant' find out res or res1 into headers include/netinet/*.h on netbsd
    Furthermore, I find out there similar of problem...
    http://mail-index.netbsd.org/tech-ne...1/03/0001.html
    But I'm confused about that. When I make a tcp packet with data, I should give space for structs ip_h,tch_h and data_h.
    buf_siz = sizeof(struct ip) + sizeof(struct tcphdr)+ sizeof(data) ;
    And I not understand what is meaning he was writing.

  5. #5
    Registered User bboozzoo's Avatar
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    uhhh, given that you mention 'giving space for ip_h, ...' you don't seem to be opening SOCK_STREAM, but rather SOCK_RAW or even PF_PACKET. can you explain why?

  6. #6
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    I use it check, but it executed in successful.
    Code:
    	if((raw = socket(PF_INET, SOCK_RAW, PPROTO_TCP))== -1) {
                    perror("Error creating raw socket: ");
                    return 0;
            }

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