[Slirp] [Git][slirp/libslirp][master] icmp: Document the use of UDP echo service

[Samuel Thibault (@sthibaul)]

Samuel Thibault pushed to branch master at slirp / libslirp


Commits:
3704690e by Samuel Thibault at 2021-06-07T00:04:25+02:00
icmp: Document the use of UDP echo service

Signed-off-by: Samuel Thibault <samuel.thibault at ens-lyon.org>

- - - - -


1 changed file:

- src/ip_icmp.c


Changes:

=====================================
src/ip_icmp.c
=====================================
@@ -185,8 +185,13 @@ void icmp_input(struct mbuf *m, int hlen)
 
             so = socreate(slirp);
             if (icmp_send(so, m, hlen) == 0) {
+                /* We could send this as ICMP, good! */
                 return;
             }
+
+            /* We could not send this as ICMP, try to send it on UDP echo
+             * service (7), wishfully hoping that it is open there. */
+
             if (udp_attach(so, AF_INET) == -1) {
                 DEBUG_MISC("icmp_input udp_attach errno = %d-%s", errno,
                            strerror(errno));



View it on GitLab: https://gitlab.freedesktop.org/slirp/libslirp/-/commit/3704690e191df79818a38da964cb673a802b8e9e

-- 
View it on GitLab: https://gitlab.freedesktop.org/slirp/libslirp/-/commit/3704690e191df79818a38da964cb673a802b8e9e
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