Unverified Commit 1667d559 authored by Daniel Stenberg's avatar Daniel Stenberg
Browse files

bindlocal: detect and avoid IP version mismatches in bind() 

Reported-by: Alex Grebenschikov
Fixes #3993
Closes #4002
parent 094b5f35

lib/connect.c

+5 −0
Original line number Diff line number Diff line
@@ -368,6 +368,11 @@ static CURLcode bindlocal(struct connectdata *conn, 
        infof(data, "Name '%s' family %i resolved to '%s' family %i\n",

              dev, af, myhost, h->addr->ai_family);

        Curl_resolv_unlock(data, h);

        if(af != h->addr->ai_family) {

          /* bad IP version combo, signal the caller to try another address

             family if available */

          return CURLE_UNSUPPORTED_PROTOCOL;

        }

        done = 1;

      }

      else {