socks5_read_udp_header

socks_http_kit

Function socks5_read_udp_header 

Source 
pub fn socks5_read_udp_header(buf: &[u8]) -> Result<(Address, usize)>
Available on crate feature socks5 only.
Expand description

Reads and parses the SOCKS5 UDP header information and destination address from a UDP packet buffer.

Per RFC 1928 Section 7, SOCKS5 UDP requests/responses contain a header in the following format:

+----+------+------+----------+----------+----------+
|RSV | FRAG | ATYP | DST.ADDR | DST.PORT |   DATA   |
+----+------+------+----------+----------+----------+
| 2  |  1   |  1   | Variable |    2     | Variable |
+----+------+------+----------+----------+----------+

RSV: Reserved field, must be 0 FRAG: Fragment number (currently unused, set to 0) ATYP/DST.ADDR/DST.PORT: Destination address encoded in the same format as SOCKS5 requests

§Arguments

  • buf - A buffer slice containing the UDP packet

§Returns

  • Result<(Address, usize)> - On success, returns the parsed destination address and the total header length in bytes, or an IO error on failure