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ircd::server: Close peer w/ cached error based on cloudflare 522 et al.

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This commit is contained in:
Jason Volk 2020-11-18 18:07:19 -08:00
parent 99b9ab4167
commit 5152cfb574
1 changed files with 42 additions and 0 deletions
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42
ircd/server.cc
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@ -1210,6 +1210,48 @@ noexcept try
};
}
// Peer-level actions for any specific HTTP codes
switch(tag.state.status)
{
// When these are received we assume no other requests to the peer
// will bear fruit. If it's possible that some routes produce these
// codes while others don't, then this is an erroneous assumption and
// the peer probably shouldn't be closed here...
case http::code::BAD_GATEWAY:
case http::code::GATEWAY_TIMEOUT:
{
// Set the error indicator so the peer is disabled for one TTL.
err_set(make_exception_ptr<http::error>(tag.state.status));
break;
}
// Trouble for a server behind cloudflare which will cause all
// requests to fail for the near future; or worse, they can hang for
// a while as cloudflare tries to contact the customer.
case http::code::CLOUDFLARE_REFUSED:
case http::code::CLOUDFLARE_TIMEDOUT:
case http::code::CLOUDFLARE_UNREACHABLE:
{
// Set the error indicator so the peer is disabled for one TTL.
err_set(make_exception_ptr<http::error>(tag.state.status));
break;
}
default:
break;
}
if(err_has())
{
// The peer can't be closed quite yet b/c the tag hasn't finished.
defer{[this]
{
close();
}};
return;
}
if(link.tag_committed() >= link.tag_commit_max())
link.wait_writable();
}