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ssu2.mtu4 and ssu2.mtu6

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orignal 2022-10-31 18:11:36 -04:00
parent 4ed4e8708e
commit e13f151474
3 changed files with 47 additions and 6 deletions
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29
libi2pd/SSU2.cpp
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@ -46,9 +46,19 @@ namespace transport
{
found = true;
if (address->IsV6 ())
i2p::context.SetMTU (SSU2_MAX_PACKET_SIZE - SOCKS5_UDP_IPV6_REQUEST_HEADER_SIZE, false);
{
uint16_t mtu; i2p::config::GetOption ("ssu2.mtu6", mtu);
if (!mtu || mtu > SSU2_MAX_PACKET_SIZE - SOCKS5_UDP_IPV6_REQUEST_HEADER_SIZE)
mtu = SSU2_MAX_PACKET_SIZE - SOCKS5_UDP_IPV6_REQUEST_HEADER_SIZE;
i2p::context.SetMTU (mtu, false);
}
else
i2p::context.SetMTU (SSU2_MAX_PACKET_SIZE - SOCKS5_UDP_IPV4_REQUEST_HEADER_SIZE, true);
{
uint16_t mtu; i2p::config::GetOption ("ssu2.mtu4", mtu);
if (!mtu || mtu > SSU2_MAX_PACKET_SIZE - SOCKS5_UDP_IPV4_REQUEST_HEADER_SIZE)
mtu = SSU2_MAX_PACKET_SIZE - SOCKS5_UDP_IPV4_REQUEST_HEADER_SIZE;
i2p::context.SetMTU (mtu, true);
}
continue; // we don't need port for proxy
}
auto port = address->port;
@ -147,7 +157,8 @@ namespace transport
if (localAddress.is_v4 ())
{
m_AddressV4 = localAddress;
int mtu = i2p::util::net::GetMTU (localAddress);
uint16_t mtu; i2p::config::GetOption ("ssu2.mtu4", mtu);
if (!mtu) mtu = i2p::util::net::GetMTU (localAddress);
if (mtu < (int)SSU2_MIN_PACKET_SIZE) mtu = SSU2_MIN_PACKET_SIZE;
if (mtu > (int)SSU2_MAX_PACKET_SIZE) mtu = SSU2_MAX_PACKET_SIZE;
i2p::context.SetMTU (mtu, true);
@ -155,9 +166,15 @@ namespace transport
else if (localAddress.is_v6 ())
{
m_AddressV6 = localAddress;
int maxMTU = i2p::util::net::GetMaxMTU (localAddress.to_v6 ());
int mtu = i2p::util::net::GetMTU (localAddress);
if (mtu > maxMTU) mtu = maxMTU;
uint16_t mtu; i2p::config::GetOption ("ssu2.mtu6", mtu);
if (!mtu)
{
int maxMTU = i2p::util::net::GetMaxMTU (localAddress.to_v6 ());
mtu = i2p::util::net::GetMTU (localAddress);
if (mtu > maxMTU) mtu = maxMTU;
}
else
if (mtu > (int)SSU2_MAX_PACKET_SIZE) mtu = SSU2_MAX_PACKET_SIZE;
if (mtu < (int)SSU2_MIN_PACKET_SIZE) mtu = SSU2_MIN_PACKET_SIZE;
i2p::context.SetMTU (mtu, false);
}