PurpleI2P/i2pd
1
0
Fork 0
mirror of https://github.com/PurpleI2P/i2pd.git synced 2025-01-22 04:04:16 +00:00
Code Issues Releases Activity

correct MTU calculation through proxy

Browse Source
This commit is contained in:
orignal 2022-10-27 13:56:42 -04:00
parent 016222463d
commit 5fb1247b87
1 changed files with 12 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
libi2pd/SSU2.cpp
View File

@ -45,7 +45,10 @@ namespace transport
if (m_IsThroughProxy)
{
found = true;
i2p::context.SetMTU (SSU2_MIN_PACKET_SIZE, address->IsV4 ());
if (address->IsV6 ())
i2p::context.SetMTU (SSU2_MAX_PACKET_SIZE - SOCKS5_UDP_IPV6_REQUEST_HEADER_SIZE, false);
else
i2p::context.SetMTU (SSU2_MAX_PACKET_SIZE - SOCKS5_UDP_IPV4_REQUEST_HEADER_SIZE, true);
continue; // we don't need port for proxy
}
auto port = address->port;
@ -162,6 +165,8 @@ namespace transport
bool SSU2Server::IsSupported (const boost::asio::ip::address& addr) const
{
if (m_IsThroughProxy)
return m_SocketV4.is_open ();
if (addr.is_v4 ())
{
if (m_SocketV4.is_open ())
@ -178,7 +183,7 @@ namespace transport
uint16_t SSU2Server::GetPort (bool v4) const
{
boost::system::error_code ec;
boost::asio::ip::udp::endpoint ep = v4 ? m_SocketV4.local_endpoint (ec) : m_SocketV6.local_endpoint (ec);
boost::asio::ip::udp::endpoint ep = (v4 || m_IsThroughProxy) ? m_SocketV4.local_endpoint (ec) : m_SocketV6.local_endpoint (ec);
if (ec) return 0;
return ep.port ();
}
@ -1103,6 +1108,11 @@ namespace transport
void SSU2Server::ProcessNextPacketFromProxy (uint8_t * buf, size_t len)
{
if (buf[2]) // FRAG
{
LogPrint (eLogWarning, "SSU2: Proxy packet fragmentation is not supported");
return;
}
size_t offset = 0;
boost::asio::ip::udp::endpoint ep;
switch (buf[3]) // ATYP