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support respond stun request in udp tunnel (#484)

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we can use this to help the hole punching. (getting public mapped address stablely)
This commit is contained in:
Sijie.Sun
2024-11-20 23:45:06 +08:00
committed by GitHub
parent 86600c6315
commit aed54f7318
3 changed files with 114 additions and 16 deletions
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easytier/src/common/stun_codec_ext.rs
+7 -6
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@@ -267,17 +267,18 @@ impl_encode!(ChangeRequestEncoder, ChangeRequest, |item: Self::Item| {
((ip << 1 | port) << 1) as u32
});
pub fn tid_to_u128(tid: &TransactionId) -> u128 {
let mut tid_buf = [0u8; 16];
pub fn tid_to_u32(tid: &TransactionId) -> u32 {
let mut tid_buf = [0u8; 4];
// copy bytes from msg_tid to tid_buf
tid_buf[..tid.as_bytes().len()].copy_from_slice(tid.as_bytes());
u128::from_le_bytes(tid_buf)
tid_buf[..].copy_from_slice(&tid.as_bytes()[8..12]);
u32::from_le_bytes(tid_buf)
}
pub fn u128_to_tid(tid: u128) -> TransactionId {
pub fn u32_to_tid(tid: u32) -> TransactionId {
let tid_buf = tid.to_le_bytes();
let mut tid_arr = [0u8; 12];
tid_arr.copy_from_slice(&tid_buf[..12]);
tid_arr[..4].copy_from_slice(&0xdeadbeefu32.to_be_bytes());
tid_arr[8..12].copy_from_slice(&tid_buf);
TransactionId::new(tid_arr)
}