C socket woes

[Xx r3negade]

I am having trouble using connect() when entering struct addrinfo members as parameters.

int tcpConnect()
{
    struct addrinfo hints;
    struct addrinfo *ai = NULL;
    int res;
    int sock1;
    char * ipaddr = "127.0.0.1";
    char * port = "80";
 
    memset(&hints, 0, sizeof(hints));
    hints.ai_family = AF_INET;
    hints.ai_socktype = SOCK_STREAM;
    hints.ai_protocol = IPPROTO_TCP;
 
    if ( (res = getaddrinfo(ipaddr, port, &hints, &ai)) < 0 )
    {
        fprintf(stderr, "Error in getaddrinfo(): %s", gai_strerror(res));
        return -1;
    }
 
    if ( (sock1 = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol)) < 0 )
    {
        fprintf(stderr, "Error in socket(): %s", gai_strerror(res));
        return -1;
    }
 
    if ( (res = connect(sock1, ai->ai_addr, ai->ai_addrlen)) < 0 )
    {
        fprintf(stderr, "Error in connect(): %s", gai_strerror(res));
        return -1;
    }
 
    return 0;
}
 

It outputs the error:

Error in connect(): Bad value for ai_flags

Do I need to set something for ai_flags in the "hints" struct? Or is getaddrinfo() giving a bad value to ai_flags in the "ai" struct?

[JosAH]

@Xx r3negade
That flag member is an input value to that function; try to set it to AI_PASSIVE and see what happens.

kind regards,

Jos

[Xx r3negade]

That isn't right. AI_PASSIVE is for use with bind() and listen(), not connect()

iSeries Information Center

If the AI_PASSIVE flag is specified, then the returned address information will be suitable for use in binding a socket for accepting incoming connections for the specified service (that is, a call to bind())...If the AI_PASSIVE bit is not set, the returned address information will be suitable for a call to connect()

Edit: My code was correct. My firewall was configured to not accept connections from localhost. I don't know what's up with the irrelevant error messages, but the problem is now fixed. Thanks for the help anyway