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Improve protocol-level handshaking protocol:

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This commit restructures the HTTP based protocol negotiation that `rippled`
executes and introduces support for negotiation of compression for peer
links which, if implemented, should result in significant bandwidth savings
for some server roles.

This commit also introduces the new `[network_id]` configuration option
that administrators can use to specify which network the server is part of
and intends to join. This makes it possible for servers from different
networks to drop the link early.

The changeset also improves the log messages generated when negotiation
of a peer link upgrade fails. In the past, no useful information would
be logged, making it more difficult for admins to troubleshoot errors.

This commit also fixes RIPD-237 and RIPD-451
This commit is contained in:
Nik Bougalis
2019-06-22 17:02:13 -07:00
parent 3ea525430e
commit f6916bfd42
41 changed files with 1496 additions and 1581 deletions
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72
src/ripple/overlay/impl/Message.cpp
View File

@@ -25,70 +25,28 @@
namespace ripple {
Message::Message (::google::protobuf::Message const& message, int type)
: mCategory(TrafficCount::categorize(message, type, false))
{
unsigned const messageBytes = message.ByteSize ();
assert (messageBytes != 0);
mBuffer.resize (kHeaderBytes + messageBytes);
/** Number of bytes in a message header. */
std::size_t constexpr headerBytes = 6;
encodeHeader (messageBytes, type);
mBuffer.resize (headerBytes + messageBytes);
auto ptr = mBuffer.data();
*ptr++ = static_cast<std::uint8_t>((messageBytes >> 24) & 0xFF);
*ptr++ = static_cast<std::uint8_t>((messageBytes >> 16) & 0xFF);
*ptr++ = static_cast<std::uint8_t>((messageBytes >> 8) & 0xFF);
*ptr++ = static_cast<std::uint8_t>(messageBytes & 0xFF);
*ptr++ = static_cast<std::uint8_t>((type >> 8) & 0xFF);
*ptr++ = static_cast<std::uint8_t> (type & 0xFF);
if (messageBytes != 0)
{
message.SerializeToArray (&mBuffer [Message::kHeaderBytes], messageBytes);
}
mCategory = TrafficCount::categorize(message, type, false);
}
bool Message::operator== (Message const& other) const
{
return mBuffer == other.mBuffer;
}
unsigned Message::getLength (std::vector <uint8_t> const& buf)
{
unsigned result;
if (buf.size () >= Message::kHeaderBytes)
{
result = buf [0];
result <<= 8;
result |= buf [1];
result <<= 8;
result |= buf [2];
result <<= 8;
result |= buf [3];
}
else
{
result = 0;
}
return result;
}
int Message::getType (std::vector<uint8_t> const& buf)
{
if (buf.size () < Message::kHeaderBytes)
return 0;
int ret = buf[4];
ret <<= 8;
ret |= buf[5];
return ret;
}
void Message::encodeHeader (unsigned size, int type)
{
assert (mBuffer.size () >= Message::kHeaderBytes);
mBuffer[0] = static_cast<std::uint8_t> ((size >> 24) & 0xFF);
mBuffer[1] = static_cast<std::uint8_t> ((size >> 16) & 0xFF);
mBuffer[2] = static_cast<std::uint8_t> ((size >> 8) & 0xFF);
mBuffer[3] = static_cast<std::uint8_t> (size & 0xFF);
mBuffer[4] = static_cast<std::uint8_t> ((type >> 8) & 0xFF);
mBuffer[5] = static_cast<std::uint8_t> (type & 0xFF);
message.SerializeToArray(ptr, messageBytes);
}
}