Add sendSizeAndMsgWithTimeout
to send size and data in a single call
#4985
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Short description
sendSizeAndMsgWithTimeout()
groups the sending of the size as auint16_t
in network byte order and the corresponding data in a singlesendmsg()
syscall, handling short writes and timeouts if needed. It also supports optional source address and interface number. This PR makes use of this new function in the Remote Logger (protobuf
) anddnsdist
TCP
workers.It also adds
TCP Fast Open
support toward backends indnsdist
, if theMSG_FASTOPEN
flag is available.Checklist
I have: