kFYatek
commented
1 year ago @eabase
The most serious error seem to be this one:
/Anjay/deps/avs_commons/src/net/compat/posix/avs_compat_addrinfo.c:242]: getaddrinfo() error: Name or service not known; family == (avs_net_af_t) 2Also not sure why it is logged as
DEBUGwhen it's clearly an ERROR.
It's an error only on a very low-level layer, but not really an error in the big picture perspective. Anjay is attempting to resolve the hostname as an IPv6 address (that's what (avs_net_af_t) 2 is referring to), and this fails. It then proceeds to resolve the same hostname as IPv4, and that apparently succeeds. That's also why it's logged on the DEBUG level.
The most relevant log message seems to be this one:
2023-08-03 16:01:13.543408 ERROR [avs_net] [/cygdrive/c/mydev/pr_anjay/Anjay/deps/avs_commons/src/net/mbedtls/avs_mbedtls_socket.c:1311]: handshake failed: -26624
I agree that those handshake errors can be cryptic, but the -26624 code refers to a timeout. You can find that by grepping Mbed TLS sources:
kfyatek@kfyatek-pc:/usr/include/mbedtls$ printf '0x%x\n' 26624
0x6800
kfyatek@kfyatek-pc:/usr/include/mbedtls$ grep -r 0x6800
ssl.h:#define MBEDTLS_ERR_SSL_TIMEOUT -0x6800Handshake timeout may mean, well, literally anything ;) but in my experience, the most probable cause is that the DTLS credentials are not recognized by the server. Please double-check that the identity and key are matching on both sides. Please also check that they are in the same format on both sides - since you're using --key-as-string, please make sure that on the server side, the key is also treated as a literal string, as opposed to e.g. encoded as hex or base64.
What kind of server are you trying to connect to? Is it an installation of Coiote DM, or maybe Leshan? We may be able to provide hints on configuring the server in that case.
If you're sure that everything matches and you're still getting this error, then please provide a packet capture (PCAP). It might be helpful in further debugging the issue.
eabase
I'm trying to connect the demo client using:
But nothing happens, I only get some cryptic errors in the log (just showing mos relevant):
The most serious error seem to be this one:
Also not sure why it is logged as
DEBUGwhen it's clearly an ERROR.Related dependency code here:
https://github.com/AVSystem/avs_commons/blob/a227958d88cd9fc689a90d2c336ee0eaa1daf17f/src/net/compat/posix/avs_compat_addrinfo.c#L239-L270
Click to see code snippet
From: `avs_compat_addrinfo.c` ```c avs_net_addrinfo_t *avs_net_addrinfo_resolve_ex( avs_net_socket_type_t socket_type, avs_net_af_t family, const char *host, const char *port_str, int flags, const avs_net_resolved_endpoint_t *preferred_endpoint) { if (avs_is_err(_avs_net_ensure_global_state())) { LOG(ERROR, _("avs_net global state initialization error")); return NULL; } struct addrinfo hint; memset((void *) &hint, 0, sizeof(hint)); hint.ai_family = get_native_af(family); if (family != AVS_NET_AF_UNSPEC && hint.ai_family == AF_UNSPEC) { LOG(DEBUG, _("Unsupported avs_net_af_t: ") "%d", (int) family); return NULL; } if (!(flags & AVS_NET_ADDRINFO_RESOLVE_F_NOADDRCONFIG)) { hint.ai_flags |= AI_ADDRCONFIG; } if (flags & AVS_NET_ADDRINFO_RESOLVE_F_PASSIVE) { hint.ai_flags |= AI_PASSIVE; } // some getaddrinfo() implementations interpret port 0 as invalid, // so we use our own port parsing uint16_t port; if (port_from_string(&port, port_str)) { LOG(ERROR, _("Invalid port: ") "%s", port_str); return NULL; } avs_net_addrinfo_t *ctx = (avs_net_addrinfo_t *) avs_calloc(1, sizeof(avs_net_addrinfo_t)); if (!ctx) { LOG(ERROR, _("Out of memory")); return NULL; } # ifdef WITH_AVS_V4MAPPED if (flags & AVS_NET_ADDRINFO_RESOLVE_F_V4MAPPED) { ctx->v4mapped = true; if (family == AVS_NET_AF_INET6) { hint.ai_family = AF_UNSPEC; } } # endif hint.ai_socktype = _avs_net_get_socket_type(socket_type); if (!host || !*host) { switch (family) { case AVS_NET_AF_INET4: host = "0.0.0.0"; break; case AVS_NET_AF_INET6: host = "::"; break; default: host = ""; } } int error = getaddrinfo(host, NULL, &hint, &ctx->results); if (error) { # ifdef AVS_COMMONS_NET_POSIX_AVS_SOCKET_HAVE_GAI_STRERROR LOG(DEBUG, _("getaddrinfo() error: ") "%s" _( "; family == (avs_net_af_t) ") "%d", gai_strerror(error), (int) family); # else LOG(DEBUG, _("getaddrinfo() error: ") "%d" _( "; family == (avs_net_af_t) ") "%d", error, (int) family); # endif avs_net_addrinfo_delete(&ctx); return NULL; } else { update_ports(ctx->results, port); unsigned seed = (unsigned) avs_time_real_now().since_real_epoch.seconds; struct addrinfo *preferred = NULL; if (preferred_endpoint) { preferred = detach_preferred(&ctx->results, preferred_endpoint->data.buf, preferred_endpoint->size); } randomize_addrinfo_list(&ctx->results, &seed); if (preferred) { preferred->ai_next = ctx->results; ctx->results = preferred; } ctx->to_send = ctx->results; return ctx; } } ```Any idea what's going on here?