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udp: Fold buffer handoff into ListenOut

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JackDoan committed 2026-10-15 17:02:42 -05:00
1 parent 1fb77bdda5
commit 06035252b2
12 files changed
+45 -60
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udp/udp_linux.go
+2 -12
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@@ -245,14 +245,7 @@ func getFrom(names [][]byte, i int, isV4 bool) netip.AddrPort {
return netip.AddrPortFrom(ip.Unmap(), binary.BigEndian.Uint16(names[i][2:4]))
}
func (u *StdConn) ListenOut(r EncReader, flush func()) error {
return u.ListenOutHandoff(r, func(bufs [][]byte) [][]byte {
flush()
return bufs
})
}
// HandoffShape is the count and size of the buffers ListenOutHandoff hands over after each batch.
// HandoffShape is the count and size of the buffers ListenOut hands over after each batch.
func (u *StdConn) HandoffShape() (n, size int) {
if u.groSupported {
return u.batch, udpGROBufferSize
@@ -260,10 +253,7 @@ func (u *StdConn) HandoffShape() (n, size int) {
return u.batch, MTU
}
// ListenOutHandoff is the receive loop. After each batch, handoff takes the batch's buffers and returns the ones to
// receive the next batch into, in HandoffShape: the same ones for a reader that is done with the packets, or
// replacements for one that keeps them.
func (u *StdConn) ListenOutHandoff(r EncReader, handoff func(bufs [][]byte) [][]byte) error {
func (u *StdConn) ListenOut(r EncReader, handoff func(bufs [][]byte) [][]byte) error {
_, bufSize := u.HandoffShape()
cmsgSpace := 0
if u.groSupported {