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Chris Tate
1e799cb60a
A TCP socket's write() answered nothing in typed code and true through
untyped values, and a 'drain' listener never fired. Node 24 answers
false when the bytes the write leaves unsent reach the socket's
65536-byte high-water mark (writeOrBuffer computes it after the socket
writes), sets needDrain, and emits 'drain' when the write buffer
empties; writes to an ended or destroyed socket answer false.
The runtime's write entry points now return that answer, record
needDrain, and fire the socket's 'drain' listeners from the flush that
empties the buffer, unless the write half is ending or the socket is
gone. writableLength reads the unsent bytes and writableNeedDrain the
flag. on('drain') and once('drain') register on the typed path and
through untyped values, and socket.write() may be used as a value.
The fallback node:net declarations type write() as boolean, add the
'drain' event and both properties.
RUNTIME_ABI_VERSION goes from 43 to 44: the socket write entry points
return a boolean.