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Peer message forwarding. (#133)

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This commit is contained in:
Savinda Senevirathne
2020-10-19 10:44:31 +05:30
committed by GitHub
parent 7183383ab7
commit 4f6ff4fbef
5 changed files with 67 additions and 9 deletions
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58
src/p2p/p2p.cpp
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@@ -5,7 +5,6 @@
#include "../util.hpp"
#include "../hplog.hpp"
#include "p2p.hpp"
#include "peer_session_handler.hpp"
namespace p2p
{
@@ -144,11 +143,23 @@ namespace p2p
}
/**
* Broadcasts the given message to all currently connected outbound peers.
* @param fbuf Peer outbound message to be broadcasted.
* @param send_to_self Whether to also send the message to self (this node).
*/
* Broadcasts the given message to all currently connected outbound peers.
* @param fbuf Peer outbound message to be broadcasted.
* @param send_to_self Whether to also send the message to self (this node).
*/
void broadcast_message(const flatbuffers::FlatBufferBuilder &fbuf, const bool send_to_self)
{
std::string_view msg = std::string_view(
reinterpret_cast<const char *>(fbuf.GetBufferPointer()), fbuf.GetSize());
broadcast_message(msg, send_to_self);
}
/**
* Broadcast the given message to all connected outbound peers.
* @param message Message to be forwarded.
* @param skipping_session Session to be skipped in message forwarding(optional).
*/
void broadcast_message(std::string_view message, const bool send_to_self, const comm::comm_session *skipping_session)
{
if (ctx.peer_connections.size() == 0)
{
@@ -161,14 +172,43 @@ namespace p2p
for (const auto &[k, session] : ctx.peer_connections)
{
if (!send_to_self && session->is_self)
// Exclude given session and self if provided.
if ((!send_to_self && session->is_self) || (skipping_session && skipping_session == session))
continue;
std::string_view msg = std::string_view(
reinterpret_cast<const char *>(fbuf.GetBufferPointer()), fbuf.GetSize());
session->send(msg);
session->send(message);
}
}
/**
* Check whether the given message is qualified to be forwarded to peers.
* @param container The message container.
* @param content_message_type The message type.
* @return Returns true if the message is qualified for forwarding to peers. False otherwise.
*/
bool validate_for_peer_msg_forwarding(const comm::comm_session &session, const msg::fbuf::p2pmsg::Container *container, const msg::fbuf::p2pmsg::Message &content_message_type)
{
// Checking whether the message forwarding is enabled and skip if the message is sent from self.
if (!conf::cfg.msgforwarding || session.is_self)
{
return false;
}
const int64_t time_now = util::get_epoch_milliseconds();
// Checking the time to live of the container. The time to live for forwarding is three times the round time.
if (container->timestamp() < (time_now - (conf::cfg.roundtime * 3)))
{
LOG_DEBUG << "Peer message is too old for forwarding.";
return false;
}
// Only the selected types of messages are forwarded.
if (content_message_type == msg::fbuf::p2pmsg::Message_Proposal_Message ||
content_message_type == msg::fbuf::p2pmsg::Message_NonUnl_Proposal_Message ||
content_message_type == msg::fbuf::p2pmsg::Message_Npl_Message)
{
return true;
}
return false;
}
/**
* Sends the given message to self (this node).