libfetch: Gracefully skip unsupported protocols

If socket() fails because the address family or protocol is unsupported,
just continue with the next address.

MFC after:	1 week
Reviewed by:	imp
Differential Revision:	https://reviews.freebsd.org/D55407

This commit is contained in:

Dag-Erling Smørgrav

2026-02-21 02:18:18 +01:00

parent afbdcd402b

commit b5d570e711

1 changed files with 5 additions and 1 deletions

									
										lib/libfetch/common.c
									
		+5
		-1
	
												View File
												
				@@ -637,8 +637,12 @@ fetch_connect(const char *host, int port, int af, int verbose)

					/* try each server address in turn */

					for (err = 0, sai = sais; sai != NULL; sai = sai->ai_next) {

						/* open socket */

						if ((sd = socket(sai->ai_family, SOCK_STREAM, 0)) < 0)

						if ((sd = socket(sai->ai_family, SOCK_STREAM, 0)) < 0) {

							err = -1;

							if (errno == EAFNOSUPPORT || errno == EPROTONOSUPPORT)

								continue;

							goto syserr;

						}

						/* attempt to bind to client address */

						for (err = 0, cai = cais; cai != NULL; cai = cai->ai_next) {

							if (cai->ai_family != sai->ai_family)