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MTU for ipv6

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orignal 2014-10-29 11:17:30 -04:00
parent 7e82686818
commit d84a7ebc7e
3 changed files with 17 additions and 9 deletions
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11
SSUData.h
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@ -16,10 +16,13 @@ namespace i2p
namespace transport
{
const size_t SSU_MTU = 1484;
const size_t SSU_MTU_V4 = 1484;
const size_t SSU_MTU_V6 = 1472;
const size_t IPV4_HEADER_SIZE = 20;
const size_t IPV6_HEADER_SIZE = 40;
const size_t UDP_HEADER_SIZE = 8;
const size_t SSU_MAX_PACKET_SIZE = SSU_MTU - IPV4_HEADER_SIZE - UDP_HEADER_SIZE; // 1456
const size_t SSU_V4_MAX_PACKET_SIZE = SSU_MTU_V4 - IPV4_HEADER_SIZE - UDP_HEADER_SIZE; // 1456
const size_t SSU_V6_MAX_PACKET_SIZE = SSU_MTU_V6 - IPV6_HEADER_SIZE - UDP_HEADER_SIZE; // 1424
const int RESEND_INTERVAL = 3; // in seconds
const int MAX_NUM_RESENDS = 5;
// data flags
@ -35,7 +38,7 @@ namespace transport
int fragmentNum;
size_t len;
bool isLast;
uint8_t buf[SSU_MAX_PACKET_SIZE + 18];
uint8_t buf[SSU_V4_MAX_PACKET_SIZE + 18]; // use biggest
Fragment () = default;
Fragment (int n, const uint8_t * b, int l, bool last):
@ -102,7 +105,7 @@ namespace transport
std::map<uint32_t, SentMessage *> m_SentMessages;
std::set<uint32_t> m_ReceivedMessages;
boost::asio::deadline_timer m_ResendTimer;
int m_PacketSize;
int m_MaxPacketSize, m_PacketSize;
};
}
}