diff options
Diffstat (limited to 'lib/kernel/src/inet_res.erl')
| -rw-r--r-- | lib/kernel/src/inet_res.erl | 54 |
1 files changed, 32 insertions, 22 deletions
diff --git a/lib/kernel/src/inet_res.erl b/lib/kernel/src/inet_res.erl index 2b63121043..962dd82ac9 100644 --- a/lib/kernel/src/inet_res.erl +++ b/lib/kernel/src/inet_res.erl @@ -694,28 +694,38 @@ query_ns(S0, Id, Buffer, IP, Port, Timer, Retry, I, query_udp(S, Id, Buffer, IP, Port, Timeout, Verbose) -> ?verbose(Verbose, "Try UDP server : ~p:~p (timeout=~w)\n", [IP,Port,Timeout]), - udp_connect(S, IP, Port), - udp_send(S, IP, Port, Buffer), - Decode = - fun ({RecIP,RecPort,Answer}) when RecIP =:= IP, RecPort =:= Port -> - case decode_answer(Answer, Id, Verbose) of - {error,badid} -> - false; - Reply -> - Reply - end; - ({_,_,_}) -> - false - end, - case udp_recv(S, IP, Port, Timeout, Decode) of - {ok,_}=Result -> - Result; - {error,timeout} when Timeout =:= 0 -> - ?verbose(Verbose, "UDP bailout timeout\n", []), - timeout; - Error -> - ?verbose(Verbose, "UDP server error: ~p\n", [Error]), - Error + case + case udp_connect(S, IP, Port) of + ok -> + udp_send(S, IP, Port, Buffer); + E1 -> + E1 end of + ok -> + Decode = + fun ({RecIP,RecPort,Answer}) + when RecIP =:= IP, RecPort =:= Port -> + case decode_answer(Answer, Id, Verbose) of + {error,badid} -> + false; + Reply -> + Reply + end; + ({_,_,_}) -> + false + end, + case udp_recv(S, IP, Port, Timeout, Decode) of + {ok,_}=Result -> + Result; + {error,timeout} when Timeout =:= 0 -> + ?verbose(Verbose, "UDP bailout timeout\n", []), + timeout; + E2 -> + ?verbose(Verbose, "UDP server error: ~p\n", [E2]), + E2 + end; + E3 -> + ?verbose(Verbose, "UDP send failed: ~p\n", [E3]), + {error,econnrefused} end. query_tcp(Timeout, Id, Buffer, IP, Port, Verbose) -> |