mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-09-20 10:37:51 +00:00
79 lines
2.4 KiB
Markdown
79 lines
2.4 KiB
Markdown
# UDP over TCP
|
|
|
|
!!! warning ""
|
|
|
|
It's a proprietary protocol created by SagerNet, not part of shadowsocks.
|
|
|
|
The UDP over TCP protocol is used to transmit UDP packets in TCP.
|
|
|
|
### Structure
|
|
|
|
```json
|
|
{
|
|
"enabled": true,
|
|
"version": 2
|
|
}
|
|
```
|
|
|
|
!!! info ""
|
|
|
|
The structure can be replaced with a boolean value when the version is not specified.
|
|
|
|
### Fields
|
|
|
|
#### enabled
|
|
|
|
Enable the UDP over TCP protocol.
|
|
|
|
#### version
|
|
|
|
The protocol version, `1` or `2`.
|
|
|
|
2 is used by default.
|
|
|
|
### Application support
|
|
|
|
| Project | UoT v1 | UoT v2 |
|
|
|--------------|----------------------|-------------------------------------------------------------------------------------------------------------------|
|
|
| sing-box | v0 (2022/08/11) | v1.2-beta9 |
|
|
| Xray-core | v1.5.7 (2022/06/05) | [f57ec13](https://github.com/XTLS/Xray-core/commit/f57ec1388084df041a2289bacab14e446bf1b357) (Not released) |
|
|
| Clash.Meta | v1.12.0 (2022/07/02) | [8cb67b6](https://github.com/MetaCubeX/Clash.Meta/commit/8cb67b6480649edfa45dcc9ac89ce0789651e8b3) (Not released) |
|
|
| Shadowrocket | v2.2.12 (2022/08/13) | / |
|
|
|
|
### Protocol details
|
|
|
|
#### Protocol version 1
|
|
|
|
The client requests the magic address to the upper layer proxy protocol to indicate the request: `sp.udp-over-tcp.arpa`
|
|
|
|
#### Stream format
|
|
|
|
| ATYP | address | port | length | data |
|
|
|------|----------|-------|--------|----------|
|
|
| u8 | variable | u16be | u16be | variable |
|
|
|
|
**ATYP / address / port**: Uses the SOCKS address format.
|
|
|
|
#### Protocol version 2
|
|
|
|
Protocol version 2 uses a new magic address: `sp.v2.udp-over-tcp.arpa`
|
|
|
|
##### Request format
|
|
|
|
| isConnect | ATYP | address | port |
|
|
|-----------|------|----------|-------|
|
|
| u8 | u8 | variable | u16be |
|
|
|
|
**isConnect**: Set to 1 to indicates that the stream uses the connect format, 0 to disable.
|
|
|
|
**ATYP / address / port**: Request destination, uses the SOCKS address format.
|
|
|
|
##### Connect stream format
|
|
|
|
| length | data |
|
|
|--------|----------|
|
|
| u16be | variable |
|
|
|
|
##### Non-connect stream format
|
|
|
|
As the same as the stream format in protocol version 1. |