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Don't fail on the batch at the first error (#1826)

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Nate Brown
2026-07-27 14:43:30 -05:00
committed by GitHub
parent 6bf424f749
commit 88872a8433
14 changed files with 155 additions and 58 deletions
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udp/conn.go
+8 -5
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@@ -48,9 +48,12 @@ type Conn interface {
// same length as bufs, and outerECNs[i] is the 2-bit IP-level ECN
// codepoint to set on packet i's outer header. Linux uses sendmmsg(2)
// for a single syscall and attaches the value as IP_TOS / IPV6_TCLASS
// cmsg; other backends ignore it. Returns on the first error; callers
// may observe a partial send if some packets went out before the error.
WriteBatch(bufs [][]byte, addrs []netip.AddrPort, outerECNs []byte) error
// cmsg; other backends ignore it.
//
// Returns the number of packets successfully written. A destination the kernel rejects costs only
// its own packet, so a short count means some peers were undeliverable, not that the batch failed.
// Not safe for concurrent use on the same Conn.
WriteBatch(bufs [][]byte, addrs []netip.AddrPort, outerECNs []byte) (int, error)
ReloadConfig(c *config.C)
SupportsMultipleReaders() bool
Close() error
@@ -73,8 +76,8 @@ func (NoopConn) SupportsMultipleReaders() bool {
func (NoopConn) WriteTo(_ []byte, _ netip.AddrPort) error {
return nil
}
func (NoopConn) WriteBatch(_ [][]byte, _ []netip.AddrPort, _ []byte) error {
return nil
func (NoopConn) WriteBatch(bufs [][]byte, _ []netip.AddrPort, _ []byte) (int, error) {
return len(bufs), nil
}
func (NoopConn) ReloadConfig(_ *config.C) {
return