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net.server_epoll: Make running out of buffer space a fatal error

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Prevent Bad Things from happening when the buffer gets full.
This of course opens up the possibility of intentionally killing
connections by sending much stuff, which need to be mitigated with rate
limits elsewhere.
This commit is contained in:
Kim Alvefur 2024-11-09 15:42:31 +01:00
parent 693079c619
commit 52178d7430
1 changed files with 6 additions and 0 deletions
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6
net/server_epoll.lua
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@ -612,6 +612,8 @@ function interface:write(data)
-- Try to flush buffer to make room
self:onwritable();
if not buffer:write(prev_buffer) then
self:on("disconnect", "no space left in buffer");
self:destroy();
return false;
end
end
@ -622,6 +624,8 @@ function interface:write(data)
end
self:onwritable();
if not buffer:write(data) then
self:on("disconnect", "no space left in buffer");
self:destroy();
return false;
end
end
@ -631,6 +635,8 @@ function interface:write(data)
end
self:onwritable();
if not buffer:write(data) then
self:on("disconnect", "no space left in buffer");
self:destroy();
return false;
end
end