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Merge pull request #4142 

cef4494 rpc: keep track of acceptors, and cancel them in StopRPCThreads (Wladimir J. van der Laan)
381b25d doc: remove mention of `-rpctimeout` from man page (Wladimir J. van der Laan)
1a44522 rpc: Make sure conn object is always cleaned up (Wladimir J. van der Laan)
0a0cd34 rpc: pass errors from async_accept (Wladimir J. van der Laan)
This commit is contained in:
Wladimir J. van der Laan 2014-05-12 17:51:23 +02:00
parent c3ad56f4e0 cef44941e7
commit 53d9709e1c
No known key found for this signature in database
GPG Key ID: 74810B012346C9A6
2 changed files with 23 additions and 17 deletions
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3
contrib/debian/manpages/bitcoin.conf.5
View File

@ -37,9 +37,6 @@ You must set *rpcuser* to secure the JSON-RPC api.
\fBrpcpassword=\fR\fI'password'\fR
You must set *rpcpassword* to secure the JSON-RPC api.
.TP
\fBrpctimeout=\fR\fI'30'\fR
How many seconds *bitcoin* will wait for a complete RPC HTTP request, after the HTTP connection is established.
.TP
\fBrpcallowip=\fR\fI'192.168.1.*'\fR
By default, only RPC connections from localhost are allowed. Specify as many *rpcallowip=* settings as you like to allow connections from other hosts (and you may use * as a wildcard character).
.TP

37
src/rpcserver.cpp
View File

@ -39,6 +39,7 @@ static ssl::context* rpc_ssl_context = NULL;
static boost::thread_group* rpc_worker_group = NULL;
static boost::asio::io_service::work *rpc_dummy_work = NULL;
static std::vector<CSubNet> rpc_allow_subnets; //!< List of subnets to allow RPC connections from
static std::vector< boost::shared_ptr<ip::tcp::acceptor> > rpc_acceptors;
void RPCTypeCheck(const Array& params,
const list<Value_type>& typesExpected,
@ -444,7 +445,7 @@ template <typename Protocol, typename SocketAcceptorService>
static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
ssl::context& context,
bool fUseSSL,
AcceptedConnection* conn,
boost::shared_ptr< AcceptedConnection > conn,
const boost::system::error_code& error);
/**
@ -456,7 +457,7 @@ static void RPCListen(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketA
const bool fUseSSL)
{
// Accept connection
AcceptedConnectionImpl<Protocol>* conn = new AcceptedConnectionImpl<Protocol>(acceptor->get_io_service(), context, fUseSSL);
boost::shared_ptr< AcceptedConnectionImpl<Protocol> > conn(new AcceptedConnectionImpl<Protocol>(acceptor->get_io_service(), context, fUseSSL));
acceptor->async_accept(
conn->sslStream.lowest_layer(),
@ -466,7 +467,7 @@ static void RPCListen(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketA
boost::ref(context),
fUseSSL,
conn,
boost::asio::placeholders::error));
_1));
}
@ -477,21 +478,20 @@ template <typename Protocol, typename SocketAcceptorService>
static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
ssl::context& context,
const bool fUseSSL,
AcceptedConnection* conn,
boost::shared_ptr< AcceptedConnection > conn,
const boost::system::error_code& error)
{
// Immediately start accepting new connections, except when we're cancelled or our socket is closed.
if (error != asio::error::operation_aborted && acceptor->is_open())
RPCListen(acceptor, context, fUseSSL);
AcceptedConnectionImpl<ip::tcp>* tcp_conn = dynamic_cast< AcceptedConnectionImpl<ip::tcp>* >(conn);
AcceptedConnectionImpl<ip::tcp>* tcp_conn = dynamic_cast< AcceptedConnectionImpl<ip::tcp>* >(conn.get());
// TODO: Actually handle errors
if (error)
{
delete conn;
// TODO: Actually handle errors
LogPrintf("%s: Error: %s\n", __func__, error.message());
}
// Restrict callers by IP. It is important to
// do this before starting client thread, to filter out
// certain DoS and misbehaving clients.
@ -500,12 +500,11 @@ static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol,
// Only send a 403 if we're not using SSL to prevent a DoS during the SSL handshake.
if (!fUseSSL)
conn->stream() << HTTPReply(HTTP_FORBIDDEN, "", false) << std::flush;
delete conn;
conn->close();
}
else {
ServiceConnection(conn);
ServiceConnection(conn.get());
conn->close();
delete conn;
}
}
@ -595,12 +594,13 @@ void StartRPCThreads()
asio::ip::address bindAddress = loopback ? asio::ip::address_v6::loopback() : asio::ip::address_v6::any();
ip::tcp::endpoint endpoint(bindAddress, GetArg("-rpcport", Params().RPCPort()));
boost::system::error_code v6_only_error;
boost::shared_ptr<ip::tcp::acceptor> acceptor(new ip::tcp::acceptor(*rpc_io_service));
bool fListening = false;
std::string strerr;
try
{
boost::shared_ptr<ip::tcp::acceptor> acceptor(new ip::tcp::acceptor(*rpc_io_service));
rpc_acceptors.push_back(acceptor);
acceptor->open(endpoint.protocol());
acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
@ -618,7 +618,6 @@ void StartRPCThreads()
{
strerr = strprintf(_("An error occurred while setting up the RPC port %u for listening on IPv6, falling back to IPv4: %s"), endpoint.port(), e.what());
}
try {
// If dual IPv6/IPv4 failed (or we're opening loopback interfaces only), open IPv4 separately
if (!fListening || loopback || v6_only_error)
@ -626,7 +625,8 @@ void StartRPCThreads()
bindAddress = loopback ? asio::ip::address_v4::loopback() : asio::ip::address_v4::any();
endpoint.address(bindAddress);
acceptor.reset(new ip::tcp::acceptor(*rpc_io_service));
boost::shared_ptr<ip::tcp::acceptor> acceptor(new ip::tcp::acceptor(*rpc_io_service));
rpc_acceptors.push_back(acceptor);
acceptor->open(endpoint.protocol());
acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
acceptor->bind(endpoint);
@ -670,7 +670,16 @@ void StopRPCThreads()
{
if (rpc_io_service == NULL) return;
// First, cancel all timers and acceptors
// This is not done automatically by ->stop(), and in some cases the destructor of
// asio::io_service can hang if this is skipped.
BOOST_FOREACH(const boost::shared_ptr<ip::tcp::acceptor> &acceptor, rpc_acceptors)
acceptor->cancel();
rpc_acceptors.clear();
BOOST_FOREACH(const PAIRTYPE(std::string, boost::shared_ptr<deadline_timer>) &timer, deadlineTimers)
timer.second->cancel();
deadlineTimers.clear();
rpc_io_service->stop();
if (rpc_worker_group != NULL)
rpc_worker_group->join_all();