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check for WSAEMSGSIZE errors when receiving UDP packets on Windows (#3982)

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* check for WSAEMSGSIZE errors when receiving UDP packets on Windows

* check EMSGSIZE error on macOS
This commit is contained in:
Marten Seemann 2023-07-20 20:31:57 -07:00 • committed by GitHub
parent 2183283622
commit 2bcfe5bc4b
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6 changed files with 23 additions and 5 deletions
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4
sys_conn_df_linux.go
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@ -57,11 +57,13 @@ func maybeSetGSO(rawConn syscall.RawConn) bool {
return true
}
func isMsgSizeErr(err error) bool {
func isSendMsgSizeErr(err error) bool {
// https://man7.org/linux/man-pages/man7/udp.7.html
return errors.Is(err, unix.EMSGSIZE)
}
func isRecvMsgSizeErr(err error) bool { return false }
func appendUDPSegmentSizeMsg(b []byte, size uint16) []byte {
startLen := len(b)
const dataLen = 2 // payload is a uint16