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e823e60ca0f697e5692a4e430081c9026dede2c9
rippled/src/ripple/overlay/impl/OverlayImpl.cpp
wilsonianb e823e60ca0 Dynamize trusted validator list and quorum (RIPD-1220): 
Instead of specifying a static list of trusted validators in the config
or validators file, the configuration can now include trusted validator
list publisher keys.

The trusted validator list and quorum are now reset each consensus
round using the latest validator lists and the list of recent
validations seen. The minimum validation quorum is now only
configurable via the command line.
2017-03-01 11:41:07 -05:00

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//------------------------------------------------------------------------------
/*
This file is part of rippled: https://github.com/ripple/rippled
Copyright (c) 2012, 2013 Ripple Labs Inc.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#include <BeastConfig.h>
#include <ripple/app/misc/HashRouter.h>
#include <ripple/app/misc/NetworkOPs.h>
#include <ripple/app/misc/ValidatorList.h>
#include <ripple/core/DatabaseCon.h>
#include <ripple/basics/contract.h>
#include <ripple/basics/Log.h>
#include <ripple/basics/make_SSLContext.h>
#include <ripple/beast/rfc2616.h>
#include <ripple/protocol/JsonFields.h>
#include <ripple/rpc/json_body.h>
#include <ripple/server/SimpleWriter.h>
#include <ripple/overlay/Cluster.h>
#include <ripple/overlay/impl/ConnectAttempt.h>
#include <ripple/overlay/impl/OverlayImpl.h>
#include <ripple/overlay/impl/PeerImp.h>
#include <ripple/overlay/impl/TMHello.h>
#include <ripple/peerfinder/make_Manager.h>
#include <ripple/protocol/STExchange.h>
#include <ripple/beast/core/ByteOrder.h>
#include <beast/core/detail/base64.hpp>
#include <ripple/beast/core/LexicalCast.h>
#include <beast/http.hpp>
#include <beast/core/detail/ci_char_traits.hpp>
#include <ripple/beast/utility/WrappedSink.h>
#include <boost/utility/in_place_factory.hpp>
namespace ripple {
/** A functor to visit all active peers and retrieve their JSON data */
struct get_peer_json
{
using return_type = Json::Value;
Json::Value json;
get_peer_json ()
{ }
void operator() (std::shared_ptr<Peer> const& peer)
{
json.append (peer->json ());
}
Json::Value operator() ()
{
return json;
}
};
//------------------------------------------------------------------------------
OverlayImpl::Child::Child (OverlayImpl& overlay)
: overlay_(overlay)
{
}
OverlayImpl::Child::~Child()
{
overlay_.remove(*this);
}
//------------------------------------------------------------------------------
OverlayImpl::Timer::Timer (OverlayImpl& overlay)
: Child(overlay)
, timer_(overlay_.io_service_)
{
}
void
OverlayImpl::Timer::stop()
{
error_code ec;
timer_.cancel(ec);
}
void
OverlayImpl::Timer::run()
{
error_code ec;
timer_.expires_from_now (std::chrono::seconds(1));
timer_.async_wait(overlay_.strand_.wrap(
std::bind(&Timer::on_timer, shared_from_this(),
beast::asio::placeholders::error)));
}
void
OverlayImpl::Timer::on_timer (error_code ec)
{
if (ec || overlay_.isStopping())
{
if (ec && ec != boost::asio::error::operation_aborted)
{
JLOG(overlay_.journal_.error()) << "on_timer: " << ec.message();
}
return;
}
overlay_.m_peerFinder->once_per_second();
overlay_.sendEndpoints();
overlay_.autoConnect();
if ((++overlay_.timer_count_ % Tuning::checkSeconds) == 0)
overlay_.check();
timer_.expires_from_now (std::chrono::seconds(1));
timer_.async_wait(overlay_.strand_.wrap(std::bind(
&Timer::on_timer, shared_from_this(),
beast::asio::placeholders::error)));
}
//------------------------------------------------------------------------------
OverlayImpl::OverlayImpl (
Application& app,
Setup const& setup,
Stoppable& parent,
ServerHandler& serverHandler,
Resource::Manager& resourceManager,
Resolver& resolver,
boost::asio::io_service& io_service,
BasicConfig const& config)
: Overlay (parent)
, app_ (app)
, io_service_ (io_service)
, work_ (boost::in_place(std::ref(io_service_)))
, strand_ (io_service_)
, setup_(setup)
, journal_ (app_.journal("Overlay"))
, serverHandler_(serverHandler)
, m_resourceManager (resourceManager)
, m_peerFinder (PeerFinder::make_Manager (*this, io_service,
stopwatch(), app_.journal("PeerFinder"), config))
, m_resolver (resolver)
, next_id_(1)
, timer_count_(0)
{
beast::PropertyStream::Source::add (m_peerFinder.get());
}
OverlayImpl::~OverlayImpl ()
{
stop();
// Block until dependent objects have been destroyed.
// This is just to catch improper use of the Stoppable API.
//
std::unique_lock <decltype(mutex_)> lock (mutex_);
cond_.wait (lock, [this] { return list_.empty(); });
}
//------------------------------------------------------------------------------
Handoff
OverlayImpl::onHandoff (std::unique_ptr <beast::asio::ssl_bundle>&& ssl_bundle,
http_request_type&& request,
endpoint_type remote_endpoint)
{
auto const id = next_id_++;
beast::WrappedSink sink (app_.logs()["Peer"], makePrefix(id));
beast::Journal journal (sink);
Handoff handoff;
if (processRequest(request, handoff))
return handoff;
if (! isPeerUpgrade(request))
return handoff;
handoff.moved = true;
JLOG(journal.debug()) << "Peer connection upgrade from " << remote_endpoint;
error_code ec;
auto const local_endpoint (ssl_bundle->socket.local_endpoint(ec));
if (ec)
{
JLOG(journal.debug()) << remote_endpoint << " failed: " << ec.message();
return handoff;
}
auto consumer = m_resourceManager.newInboundEndpoint(
beast::IPAddressConversion::from_asio(remote_endpoint));
if (consumer.disconnect())
return handoff;
auto const slot = m_peerFinder->new_inbound_slot (
beast::IPAddressConversion::from_asio(local_endpoint),
beast::IPAddressConversion::from_asio(remote_endpoint));
if (slot == nullptr)
{
// self-connect, close
handoff.moved = false;
return handoff;
}
// TODO Validate HTTP request
{
auto const types = beast::rfc2616::split_commas(
request.fields["Connect-As"]);
if (std::find_if(types.begin(), types.end(),
[](std::string const& s)
{
return beast::detail::ci_equal(s, "peer");
}) == types.end())
{
handoff.moved = false;
handoff.response = makeRedirectResponse(slot, request,
remote_endpoint.address());
handoff.keep_alive = is_keep_alive(request);
return handoff;
}
}
auto hello = parseHello (true, request.fields, journal);
if(! hello)
{
m_peerFinder->on_closed(slot);
handoff.moved = false;
handoff.response = makeErrorResponse (slot, request,
remote_endpoint.address(),
"Unable to parse HELLO message");
handoff.keep_alive = false;
return handoff;
}
auto sharedValue = makeSharedValue(
ssl_bundle->stream.native_handle(), journal);
if(! sharedValue)
{
m_peerFinder->on_closed(slot);
handoff.moved = false;
handoff.response = makeErrorResponse (slot, request,
remote_endpoint.address(),
"Incorrect security cookie (possible MITM detected)");
handoff.keep_alive = false;
return handoff;
}
auto publicKey = verifyHello (*hello,
*sharedValue,
setup_.public_ip,
beast::IPAddressConversion::from_asio(
remote_endpoint), journal, app_);
if(! publicKey)
{
m_peerFinder->on_closed(slot);
handoff.moved = false;
handoff.response = makeErrorResponse (slot, request,
remote_endpoint.address(),
"Unable to verify HELLO message");
handoff.keep_alive = false;
return handoff;
}
auto const result = m_peerFinder->activate (slot, *publicKey,
static_cast<bool>(app_.cluster().member(*publicKey)));
if (result != PeerFinder::Result::success)
{
m_peerFinder->on_closed(slot);
JLOG(journal.debug()) <<
"Peer " << remote_endpoint << " redirected, slots full";
handoff.moved = false;
handoff.response = makeRedirectResponse(slot, request,
remote_endpoint.address());
handoff.keep_alive = is_keep_alive(request);
return handoff;
}
auto const peer = std::make_shared<PeerImp>(app_, id,
remote_endpoint, slot, std::move(request), *hello,
*publicKey, consumer, std::move(ssl_bundle), *this);
{
// As we are not on the strand, run() must be called
// while holding the lock, otherwise new I/O can be
// queued after a call to stop().
std::lock_guard <decltype(mutex_)> lock (mutex_);
{
auto const result =
m_peers.emplace (peer->slot(), peer);
assert (result.second);
(void) result.second;
}
list_.emplace(peer.get(), peer);
peer->run();
}
handoff.moved = true;
return handoff;
}
//------------------------------------------------------------------------------
bool
OverlayImpl::isPeerUpgrade(http_request_type const& request)
{
if (! is_upgrade(request))
return false;
auto const versions = parse_ProtocolVersions(
request.fields["Upgrade"]);
if (versions.size() == 0)
return false;
return true;
}
bool
OverlayImpl::isPeerUpgrade(http_response_type const& response)
{
if (! is_upgrade(response))
return false;
if(response.status != 101)
return false;
auto const versions = parse_ProtocolVersions(
response.fields["Upgrade"]);
if (versions.size() == 0)
return false;
return true;
}
std::string
OverlayImpl::makePrefix (std::uint32_t id)
{
std::stringstream ss;
ss << "[" << std::setfill('0') << std::setw(3) << id << "] ";
return ss.str();
}
std::shared_ptr<Writer>
OverlayImpl::makeRedirectResponse (PeerFinder::Slot::ptr const& slot,
http_request_type const& request, address_type remote_address)
{
beast::http::response<json_body> msg;
msg.version = request.version;
msg.status = 503;
msg.reason = "Service Unavailable";
msg.fields.insert("Server", BuildInfo::getFullVersionString());
msg.fields.insert("Remote-Address", remote_address.to_string());
msg.fields.insert("Content-Type", "application/json");
msg.body = Json::objectValue;
{
auto const result = m_peerFinder->redirect(slot);
Json::Value& ips = (msg.body["peer-ips"] = Json::arrayValue);
for (auto const& _ : m_peerFinder->redirect(slot))
ips.append(_.address.to_string());
}
prepare(msg, beast::http::connection::close);
return std::make_shared<SimpleWriter>(msg);
}
std::shared_ptr<Writer>
OverlayImpl::makeErrorResponse (PeerFinder::Slot::ptr const& slot,
http_request_type const& request,
address_type remote_address,
std::string text)
{
beast::http::response<beast::http::string_body> msg;
msg.version = request.version;
msg.status = 400;
msg.reason = "Bad Request";
msg.fields.insert("Server", BuildInfo::getFullVersionString());
msg.fields.insert("Remote-Address", remote_address.to_string());
msg.body = text;
prepare(msg, beast::http::connection::close);
return std::make_shared<SimpleWriter>(msg);
}
//------------------------------------------------------------------------------
void
OverlayImpl::connect (beast::IP::Endpoint const& remote_endpoint)
{
assert(work_);
auto usage = resourceManager().newOutboundEndpoint (remote_endpoint);
if (usage.disconnect())
{
JLOG(journal_.info()) << "Over resource limit: " << remote_endpoint;
return;
}
auto const slot = peerFinder().new_outbound_slot(remote_endpoint);
if (slot == nullptr)
{
JLOG(journal_.debug()) << "Connect: No slot for " << remote_endpoint;
return;
}
auto const p = std::make_shared<ConnectAttempt>(app_,
io_service_, beast::IPAddressConversion::to_asio_endpoint(remote_endpoint),
usage, setup_.context, next_id_++, slot,
app_.journal("Peer"), *this);
std::lock_guard<decltype(mutex_)> lock(mutex_);
list_.emplace(p.get(), p);
p->run();
}
//------------------------------------------------------------------------------
// Adds a peer that is already handshaked and active
void
OverlayImpl::add_active (std::shared_ptr<PeerImp> const& peer)
{
std::lock_guard <decltype(mutex_)> lock (mutex_);
{
auto const result =
m_peers.emplace (peer->slot(), peer);
assert (result.second);
(void) result.second;
}
{
auto const result = ids_.emplace (
std::piecewise_construct,
std::make_tuple (peer->id()),
std::make_tuple (peer));
assert(result.second);
(void) result.second;
}
list_.emplace(peer.get(), peer);
JLOG(journal_.debug()) <<
"activated " << peer->getRemoteAddress() <<
" (" << peer->id() << ":" <<
toBase58 (
TokenType::TOKEN_NODE_PUBLIC,
peer->getNodePublic()) << ")";
// As we are not on the strand, run() must be called
// while holding the lock, otherwise new I/O can be
// queued after a call to stop().
peer->run();
}
void
OverlayImpl::remove (PeerFinder::Slot::ptr const& slot)
{
std::lock_guard <decltype(mutex_)> lock (mutex_);
auto const iter = m_peers.find (slot);
assert(iter != m_peers.end ());
m_peers.erase (iter);
}
//------------------------------------------------------------------------------
//
// Stoppable
//
//------------------------------------------------------------------------------
// Caller must hold the mutex
void
OverlayImpl::checkStopped ()
{
if (isStopping() && areChildrenStopped () && list_.empty())
stopped();
}
void
OverlayImpl::onPrepare()
{
PeerFinder::Config config;
if (app_.config().PEERS_MAX != 0)
config.maxPeers = app_.config().PEERS_MAX;
config.outPeers = config.calcOutPeers();
auto const port = serverHandler_.setup().overlay.port;
config.peerPrivate = app_.config().PEER_PRIVATE;
config.wantIncoming =
(! config.peerPrivate) && (port != 0);
// if it's a private peer or we are running as standalone
// automatic connections would defeat the purpose.
config.autoConnect =
!app_.config().standalone() &&
!app_.config().PEER_PRIVATE;
config.listeningPort = port;
config.features = "";
config.ipLimit = setup_.ipLimit;
// Enforce business rules
config.applyTuning();
m_peerFinder->setConfig (config);
// Populate our boot cache: if there are no entries in [ips] then we use
// the entries in [ips_fixed]. If both are empty, we resort to a round-robin
// pool.
auto bootstrapIps = app_.config().IPS.empty()
? app_.config().IPS_FIXED
: app_.config().IPS;
if (bootstrapIps.empty ())
bootstrapIps.push_back ("r.ripple.com 51235");
m_resolver.resolve (bootstrapIps,
[this](std::string const& name,
std::vector <beast::IP::Endpoint> const& addresses)
{
std::vector <std::string> ips;
ips.reserve(addresses.size());
for (auto const& addr : addresses)
{
if (addr.port () == 0)
{
Throw<std::runtime_error> ("Port not specified for "
"address:" + addr.to_string ());
}
ips.push_back (to_string (addr));
}
std::string const base ("config: ");
if (!ips.empty ())
m_peerFinder->addFallbackStrings (base + name, ips);
});
// Add the ips_fixed from the rippled.cfg file
if (! app_.config().standalone() && !app_.config().IPS_FIXED.empty ())
{
m_resolver.resolve (app_.config().IPS_FIXED,
[this](
std::string const& name,
std::vector <beast::IP::Endpoint> const& addresses)
{
if (!addresses.empty ())
m_peerFinder->addFixedPeer (name, addresses);
});
}
}
void
OverlayImpl::onStart ()
{
auto const timer = std::make_shared<Timer>(*this);
std::lock_guard <decltype(mutex_)> lock (mutex_);
list_.emplace(timer.get(), timer);
timer_ = timer;
timer->run();
}
void
OverlayImpl::onStop ()
{
strand_.dispatch(std::bind(&OverlayImpl::stop, this));
}
void
OverlayImpl::onChildrenStopped ()
{
std::lock_guard <decltype(mutex_)> lock (mutex_);
checkStopped ();
}
//------------------------------------------------------------------------------
//
// PropertyStream
//
//------------------------------------------------------------------------------
void
OverlayImpl::onWrite (beast::PropertyStream::Map& stream)
{
beast::PropertyStream::Set set ("traffic", stream);
auto stats = m_traffic.getCounts();
for (auto& i : stats)
{
if (! i.second.messagesIn && ! i.second.messagesOut)
continue;
beast::PropertyStream::Map item (set);
item["category"] = i.first;
item["bytes_in"] =
beast::lexicalCast<std::string>
(i.second.bytesIn.load());
item["messages_in"] =
beast::lexicalCast<std::string>
(i.second.messagesIn.load());
item["bytes_out"] =
beast::lexicalCast<std::string>
(i.second.bytesOut.load());
item["messages_out"] =
beast::lexicalCast<std::string>
(i.second.messagesOut.load());
}
}
//------------------------------------------------------------------------------
/** A peer has connected successfully
This is called after the peer handshake has been completed and during
peer activation. At this point, the peer address and the public key
are known.
*/
void
OverlayImpl::activate (std::shared_ptr<PeerImp> const& peer)
{
// Now track this peer
{
std::lock_guard <decltype(mutex_)> lock (mutex_);
auto const result (ids_.emplace (
std::piecewise_construct,
std::make_tuple (peer->id()),
std::make_tuple (peer)));
assert(result.second);
(void) result.second;
}
JLOG(journal_.debug()) <<
"activated " << peer->getRemoteAddress() <<
" (" << peer->id() <<
":" << toBase58 (
TokenType::TOKEN_NODE_PUBLIC,
peer->getNodePublic()) << ")";
// We just accepted this peer so we have non-zero active peers
assert(size() != 0);
}
void
OverlayImpl::onPeerDeactivate (Peer::id_t id)
{
std::lock_guard <decltype(mutex_)> lock (mutex_);
ids_.erase(id);
}
void
OverlayImpl::onManifests (
std::shared_ptr<protocol::TMManifests> const& m,
std::shared_ptr<PeerImp> const& from)
{
auto& hashRouter = app_.getHashRouter();
auto const n = m->list_size();
auto const& journal = from->pjournal();
JLOG(journal.debug()) << "TMManifest, " << n << (n == 1 ? " item" : " items");
for (std::size_t i = 0; i < n; ++i)
{
auto& s = m->list ().Get (i).stobject ();
if (auto mo = Manifest::make_Manifest (s))
{
uint256 const hash = mo->hash ();
if (!hashRouter.addSuppressionPeer (hash, from->id ()))
continue;
if (! app_.validators().listed (mo->masterKey))
{
JLOG(journal.info()) << "Untrusted manifest #" << i + 1;
app_.getOPs().pubManifest (*mo);
continue;
}
auto const serialized = mo->serialized;
auto const result = app_.validatorManifests ().applyManifest (
std::move(*mo));
if (result == ManifestDisposition::accepted)
{
app_.getOPs().pubManifest (
*Manifest::make_Manifest(serialized));
}
if (result == ManifestDisposition::accepted)
{
auto db = app_.getWalletDB ().checkoutDb ();
soci::transaction tr(*db);
static const char* const sql =
"INSERT INTO ValidatorManifests (RawData) VALUES (:rawData);";
soci::blob rawData(*db);
convert (serialized, rawData);
*db << sql, soci::use (rawData);
tr.commit ();
protocol::TMManifests o;
o.add_list ()->set_stobject (s);
auto const toSkip = hashRouter.shouldRelay (hash);
if(toSkip)
foreach (send_if_not (
std::make_shared<Message>(o, protocol::mtMANIFESTS),
peer_in_set (*toSkip)));
}
else
{
JLOG(journal.info()) << "Bad manifest #" << i + 1;
}
}
else
{
JLOG(journal.warn()) << "Malformed manifest #" << i + 1;
continue;
}
}
}
void
OverlayImpl::reportTraffic (
TrafficCount::category cat,
bool isInbound,
int number)
{
m_traffic.addCount (cat, isInbound, number);
}
std::size_t
OverlayImpl::selectPeers (PeerSet& set, std::size_t limit,
std::function<bool(std::shared_ptr<Peer> const&)> score)
{
using item = std::pair<int, std::shared_ptr<PeerImp>>;
std::vector<item> v;
v.reserve(size());
for_each ([&](std::shared_ptr<PeerImp>&& e)
{
auto const s = e->getScore(score(e));
v.emplace_back(s, std::move(e));
});
std::sort(v.begin(), v.end(),
[](item const& lhs, item const&rhs)
{
return lhs.first > rhs.first;
});
std::size_t accepted = 0;
for (auto const& e : v)
{
if (set.insert(e.second) && ++accepted >= limit)
break;
}
return accepted;
}
/** The number of active peers on the network
Active peers are only those peers that have completed the handshake
and are running the Ripple protocol.
*/
std::size_t
OverlayImpl::size()
{
std::lock_guard <decltype(mutex_)> lock (mutex_);
return ids_.size ();
}
int
OverlayImpl::limit()
{
return m_peerFinder->config().maxPeers;
}
Json::Value
OverlayImpl::crawl()
{
using namespace std::chrono;
Json::Value jv;
auto& av = jv["active"] = Json::Value(Json::arrayValue);
for_each ([&](std::shared_ptr<PeerImp>&& sp)
{
auto& pv = av.append(Json::Value(Json::objectValue));
pv[jss::public_key] = beast::detail::base64_encode(
sp->getNodePublic().data(),
sp->getNodePublic().size());
pv[jss::type] = sp->slot()->inbound() ?
"in" : "out";
pv[jss::uptime] =
static_cast<std::uint32_t>(duration_cast<seconds>(
sp->uptime()).count());
if (sp->crawl())
{
pv[jss::ip] = sp->getRemoteAddress().address().to_string();
if (sp->slot()->inbound())
{
if (auto port = sp->slot()->listening_port())
pv[jss::port] = *port;
}
else
{
pv[jss::port] = std::to_string(
sp->getRemoteAddress().port());
}
}
auto version = sp->getVersion ();
if (!version.empty ())
pv["version"] = version;
});
return jv;
}
// Returns information on verified peers.
Json::Value
OverlayImpl::json ()
{
return foreach (get_peer_json());
}
bool
OverlayImpl::processRequest (http_request_type const& req,
Handoff& handoff)
{
if (req.url != "/crawl")
return false;
beast::http::response<json_body> msg;
msg.version = req.version;
msg.status = 200;
msg.reason = "OK";
msg.fields.insert("Server", BuildInfo::getFullVersionString());
msg.fields.insert("Content-Type", "application/json");
msg.body["overlay"] = crawl();
prepare(msg, beast::http::connection::close);
handoff.response = std::make_shared<SimpleWriter>(msg);
return true;
}
Overlay::PeerSequence
OverlayImpl::getActivePeers()
{
Overlay::PeerSequence ret;
ret.reserve(size());
for_each ([&ret](std::shared_ptr<PeerImp>&& sp)
{
ret.emplace_back(std::move(sp));
});
return ret;
}
void
OverlayImpl::checkSanity (std::uint32_t index)
{
for_each ([index](std::shared_ptr<PeerImp>&& sp)
{
sp->checkSanity (index);
});
}
void
OverlayImpl::check ()
{
for_each ([](std::shared_ptr<PeerImp>&& sp)
{
sp->check ();
});
}
std::shared_ptr<Peer>
OverlayImpl::findPeerByShortID (Peer::id_t const& id)
{
std::lock_guard <decltype(mutex_)> lock (mutex_);
auto const iter = ids_.find (id);
if (iter != ids_.end ())
return iter->second.lock();
return {};
}
void
OverlayImpl::send (protocol::TMProposeSet& m)
{
if (setup_.expire)
m.set_hops(0);
auto const sm = std::make_shared<Message>(
m, protocol::mtPROPOSE_LEDGER);
for_each([&](std::shared_ptr<PeerImp>&& p)
{
if (! m.has_hops() || p->hopsAware())
p->send(sm);
});
}
void
OverlayImpl::send (protocol::TMValidation& m)
{
if (setup_.expire)
m.set_hops(0);
auto const sm = std::make_shared<Message>(
m, protocol::mtVALIDATION);
for_each([&](std::shared_ptr<PeerImp>&& p)
{
if (! m.has_hops() || p->hopsAware())
p->send(sm);
});
SerialIter sit (m.validation().data(), m.validation().size());
auto val = std::make_shared <
STValidation> (std::ref (sit), false);
app_.getOPs().pubValidation (val);
}
void
OverlayImpl::relay (protocol::TMProposeSet& m,
uint256 const& uid)
{
if (m.has_hops() && m.hops() >= maxTTL)
return;
auto const toSkip = app_.getHashRouter().shouldRelay(uid);
if (!toSkip)
return;
auto const sm = std::make_shared<Message>(
m, protocol::mtPROPOSE_LEDGER);
for_each([&](std::shared_ptr<PeerImp>&& p)
{
if (toSkip->find(p->id()) != toSkip->end())
return;
if (! m.has_hops() || p->hopsAware())
p->send(sm);
});
}
void
OverlayImpl::relay (protocol::TMValidation& m,
uint256 const& uid)
{
if (m.has_hops() && m.hops() >= maxTTL)
return;
auto const toSkip = app_.getHashRouter().shouldRelay(uid);
if (! toSkip)
return;
auto const sm = std::make_shared<Message>(
m, protocol::mtVALIDATION);
for_each([&](std::shared_ptr<PeerImp>&& p)
{
if (toSkip->find(p->id()) != toSkip->end())
return;
if (! m.has_hops() || p->hopsAware())
p->send(sm);
});
}
//------------------------------------------------------------------------------
void
OverlayImpl::remove (Child& child)
{
std::lock_guard<decltype(mutex_)> lock(mutex_);
list_.erase(&child);
if (list_.empty())
checkStopped();
}
void
OverlayImpl::stop()
{
std::lock_guard<decltype(mutex_)> lock(mutex_);
if (work_)
{
work_ = boost::none;
for (auto& _ : list_)
{
auto const child = _.second.lock();
// Happens when the child is about to be destroyed
if (child != nullptr)
child->stop();
}
}
}
void
OverlayImpl::autoConnect()
{
auto const result = m_peerFinder->autoconnect();
for (auto addr : result)
connect (addr);
}
void
OverlayImpl::sendEndpoints()
{
auto const result = m_peerFinder->buildEndpointsForPeers();
for (auto const& e : result)
{
std::shared_ptr<PeerImp> peer;
{
std::lock_guard <decltype(mutex_)> lock (mutex_);
auto const iter = m_peers.find (e.first);
if (iter != m_peers.end())
peer = iter->second.lock();
}
if (peer)
peer->sendEndpoints (e.second.begin(), e.second.end());
}
}
//------------------------------------------------------------------------------
bool ScoreHasLedger::operator()(std::shared_ptr<Peer> const& bp) const
{
auto const& p = std::dynamic_pointer_cast<PeerImp>(bp);
return p->hasLedger (hash_, seq_);
}
bool ScoreHasTxSet::operator()(std::shared_ptr<Peer> const& bp) const
{
auto const& p = std::dynamic_pointer_cast<PeerImp>(bp);
return p->hasTxSet (hash_);
}
//------------------------------------------------------------------------------
Overlay::Setup
setup_Overlay (BasicConfig const& config)
{
Overlay::Setup setup;
auto const& section = config.section("overlay");
setup.context = make_SSLContext("");
setup.expire = get<bool>(section, "expire", false);
set (setup.ipLimit, "ip_limit", section);
if (setup.ipLimit < 0)
Throw<std::runtime_error> ("Configured IP limit is invalid");
std::string ip;
set (ip, "public_ip", section);
if (! ip.empty ())
{
bool valid;
std::tie (setup.public_ip, valid) =
beast::IP::Address::from_string (ip);
if (! valid || ! setup.public_ip.is_v4() ||
is_private (setup.public_ip))
Throw<std::runtime_error> ("Configured public IP is invalid");
}
return setup;
}
std::unique_ptr <Overlay>
make_Overlay (
Application& app,
Overlay::Setup const& setup,
Stoppable& parent,
ServerHandler& serverHandler,
Resource::Manager& resourceManager,
Resolver& resolver,
boost::asio::io_service& io_service,
BasicConfig const& config)
{
return std::make_unique<OverlayImpl>(app, setup, parent, serverHandler,
resourceManager, resolver, io_service, config);
}
}
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