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LibCore: Make UDPServer::receive() return ErrorOr<ByteBuffer>

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This is a first step towards handling OOM errors instead of just
crashing the program.

Now UDPServer's method `receive()` return memory allocation
errors explicitly with help of ErrorOr.

This removes one FIXME and make a bunch of new ones. :(
This commit is contained in:
Alexander Narsudinov 2022-12-18 00:15:54 +03:00 • committed by Andreas Kling
parent 9ae9d82a03
commit 767529ebf5
6 changed files with 19 additions and 17 deletions
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6
Userland/Services/LookupServer/MulticastDNS.cpp
View file

@ -51,7 +51,8 @@ MulticastDNS::MulticastDNS(Object* parent)
void MulticastDNS::handle_packet()
{
auto buffer = receive(1024);
// TODO: propagate the error somehow
auto buffer = MUST(receive(1024));
auto optional_packet = Packet::from_raw_packet(buffer.data(), buffer.size());
if (!optional_packet.has_value()) {
dbgln("Got an invalid mDNS packet");
@ -167,7 +168,8 @@ Vector<Answer> MulticastDNS::lookup(Name const& name, RecordType record_type)
return {};
}
auto buffer = receive(1024);
// TODO: propagate the error somehow
auto buffer = MUST(receive(1024));
if (buffer.is_empty())
return {};
auto optional_packet = Packet::from_raw_packet(buffer.data(), buffer.size());