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This commit is contained in:
JackDoan
2026-04-23 17:32:49 -05:00
parent 90f2938f9c
commit 6e23fe4d46
3 changed files with 133 additions and 8 deletions
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16
udp/udp_linux_64.go
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@@ -33,13 +33,18 @@ type rawMessage struct {
Pad0 [4]byte
}
func (u *StdConn) PrepareRawMessages(n int) ([]rawMessage, [][]byte, [][]byte) {
func (u *StdConn) PrepareRawMessages(n, bufSize, cmsgSpace int) ([]rawMessage, [][]byte, [][]byte, []byte) {
msgs := make([]rawMessage, n)
buffers := make([][]byte, n)
names := make([][]byte, n)
var cmsgs []byte
if cmsgSpace > 0 {
cmsgs = make([]byte, n*cmsgSpace)
}
for i := range msgs {
buffers[i] = make([]byte, MTU)
buffers[i] = make([]byte, bufSize)
names[i] = make([]byte, unix.SizeofSockaddrInet6)
vs := []iovec{
@@ -51,9 +56,14 @@ func (u *StdConn) PrepareRawMessages(n int) ([]rawMessage, [][]byte, [][]byte) {
msgs[i].Hdr.Name = &names[i][0]
msgs[i].Hdr.Namelen = uint32(len(names[i]))
if cmsgSpace > 0 {
msgs[i].Hdr.Control = &cmsgs[i*cmsgSpace]
msgs[i].Hdr.Controllen = uint64(cmsgSpace)
}
}
return msgs, buffers, names
return msgs, buffers, names, cmsgs
}
func setIovLen(v *iovec, n int) {