this fix seems to make the connect fail properly even on IPv4-only Linux (0e7203be) · Commits · CYBER - Cyber Security / TS 103 523 MSP / TLMSP / TLMSP curl

lib/connect.c

+11 −3

Original line number	Original line	Diff line number	Diff line
	@@ -309,9 +309,8 @@ static CURLcode bindlocal(struct connectdata *conn,

	return CURLE_HTTP_PORT_FAILED;		return CURLE_HTTP_PORT_FAILED;
	}		}
	#else /* end of ipv4-specific section */		#endif /* end of ipv4-specific section */

	/* we only use socketerror() on IPv6-enabled machines */
	static		static
	int socketerror(int sockfd)		int socketerror(int sockfd)
	{		{
	@@ -324,7 +323,6 @@ int socketerror(int sockfd)

	return err;		return err;
	}		}
	#endif

	/*		/*
	* TCP connect to the given host with timeout, proxy or remote doesn't matter.		* TCP connect to the given host with timeout, proxy or remote doesn't matter.
	@@ -525,6 +523,16 @@ CURLcode Curl_connecthost(struct connectdata conn, / context */
	}		}
	}		}

			if(0 == rc) {
			int err = socketerror(sockfd);
			if ((0 == err) \|\| (EISCONN == err)) {
			/* we are connected, awesome! */
			break;
			}
			/* nope, not connected for real */
			rc = -1;
			}

	if(0 != rc) {		if(0 != rc) {
	/* get a new timeout for next attempt */		/* get a new timeout for next attempt */
	after = Curl_tvnow();		after = Curl_tvnow();