Socket programming - Converting Windows code into linux code

Question

i'm quite new to socket programming and my task is to change a windows code into linux. There i got a problem and i hope you can help me. I got this code segment, where the four parameters of the IP4-address get transfered from a function to my socket code (in windows with the header winsock.h).

struct sockaddr_in server;

server.sin_addr.S_un.S_un_b.s_b1 = (unsigned char)a1;
server.sin_addr.S_un.S_un_b.s_b2 = (unsigned char)a2;
server.sin_addr.S_un.S_un_b.s_b3 = (unsigned char)a3;
server.sin_addr.S_un.S_un_b.s_b4 = (unsigned char)a4;

My question is, if there is a similar type of way to transfer these parameters to the linux socket code.

the server is defined like this: struct sockaddr_in server; — Kilian
– Kilian, Commented Apr 26, 2013 at 11:37

Valeri Atamaniouk · Accepted Answer · 2013-04-26 11:54:29Z

2

You can convert it manually:

inaddr_t make_inaddr(
            unsigned char a1,
            unsigned char a2,
            unsigned char a3,
            unsigned char a4)
{
    inaddr_t result;

    result = htonl(((uint32_t)a1 << 24) 
                    | ((uint32_t)a2 << 16)
                    | ((uint32_t)a3 << 8)
                    | a4);
    return result;
}

answered Apr 26, 2013 at 11:54

Valeri Atamaniouk

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1 Comment

glglgl Over a year ago

@Kilian Then it is about time to accept ✓ this answer in order to encourage other people to give good answers.

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