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fix: misc µTP trace log fixes (#6929)

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* fix: FTBFS when `TR_UTP_TRACE` is defined

* refactor: log socket address when processing udp packets

* refactor: log details of unexpected UDP packet

* fix: don't unset utp context userdata during shutdown

It is still needed inside `utp_destroy()` when `UTP_DEBUG_LOGGING` is defined.

* code review: lazy evaluate incoming udp packet display name

* code review: move `from_str` out of loop
This commit is contained in:
Yat Ho 2024-07-14 18:55:37 +08:00 committed by GitHub
parent a92fc3b76e
commit e334f3c37f
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GPG key ID: B5690EEEBB952194
2 changed files with 12 additions and 4 deletions
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13
libtransmission/tr-udp.cc
View file

@ -95,6 +95,11 @@ void event_callback(evutil_socket_t s, [[maybe_unused]] short type, void* vsessi
auto* const session = static_cast<tr_session*>(vsession);
auto got_utp_packet = false;
auto const from_str = [from_sa]
{
return tr_socket_address::from_sockaddr(from_sa).value_or(tr_socket_address{}).display_name();
};
for (;;)
{
auto const n_read = recvfrom(s, reinterpret_cast<char*>(std::data(buf)), std::size(buf) - 1, 0, from_sa, &fromlen);
@ -128,7 +133,7 @@ void event_callback(evutil_socket_t s, [[maybe_unused]] short type, void* vsessi
{
if (!session->announcer_udp_->handle_message(std::data(buf), n_read, from_sa, fromlen))
{
tr_logAddTrace("Couldn't parse UDP tracker packet.");
tr_logAddTrace(fmt::format("{} Couldn't parse UDP tracker packet.", from_str()));
}
}
else if (session->allowsUTP() && session->utp_context != nullptr)
@ -139,7 +144,11 @@ void event_callback(evutil_socket_t s, [[maybe_unused]] short type, void* vsessi
}
else
{
tr_logAddTrace("Unexpected UDP packet");
tr_logAddTrace(fmt::format(
"{} Unexpected UDP packet... len {} [{}]",
from_str(),
n_read,
tr_base64_encode({ reinterpret_cast<char const*>(std::data(buf)), static_cast<size_t>(n_read) })));
}
}
}

3
libtransmission/tr-utp.cc
View file

@ -122,7 +122,7 @@ uint64 utp_callback(utp_callback_arguments* args)
{
#ifdef TR_UTP_TRACE
case UTP_LOG:
fmt::print(stderr, "[µTP] {}\n", args->buf);
tr_logAddTrace(fmt::format("[µTP] {}", reinterpret_cast<char const*>(args->buf)));
break;
#endif
@ -227,7 +227,6 @@ void tr_utp_close(tr_session* session)
if (session->utp_context != nullptr)
{
utp_context_set_userdata(session->utp_context, nullptr);
utp_destroy(session->utp_context);
session->utp_context = nullptr;
}