sockets - c getaddrinfo no such host is known -

i'm trying use getaddrinfo giving http(s) prefix , doesn't host correctly. how can fix problem. want https://www.google.com gai_strerror() returns "no such host known", works okay www.google.com on port 80.

this part of code i'm using getaddrinfo() part:

// request pose download webpage char *send_buf="get / \r\n";  // tried 3 different urls apparently changing value in // value in variable in code, works 'www.google.com' const char *url="https://www.google.com"; const char *url="http://www.google.com"; const char *url="www.google.com";  if( ( status=getaddrinfo(url, port, &hints, &res) )!=0 ) {     printf("%s\n", gai_strerror(status));     exit(1); } 

i'm trying download webpage using winsock2 , when use www.google.com, gives me 302 moved message , i'd download actual webpage without using external libraries.

you have give either ip address or hostname of desired host. if give hostname converted respective ip address(es). hostname should in form only: "www.example.domain_name". not include "http://" or "https://". property of url includes hostname, not part of hostname itself.

to download html https://www.google.com, have lookup ip www.google.com, connect ip on port 443 (the default https port), negotiate ssl/tls encryption session, , send http get request / document.

it not wise implement ssl/tls encryption hand. use library, such openssl, or microsoft's own cryptoapi, on top of existing socket code. alternatively, don't use socket apis directly @ all, use http/s library, such microsoft's own wininet/winhttp api, or library libcurl, handle of details you.