int ReadHTTP (std::basic_istream<char>& stream, std::map<std::string, std::string>& mapHeadersRet,
std::string& strMessageRet)
{
mapHeadersRet.clear ();
strMessageRet = "";
// Read status
int nStatus = ReadHTTPStatus (stream);
// Read header
int nLen = ReadHTTPHeader (stream, mapHeadersRet);
if (nLen < 0 || nLen > gMaxHTTPHeaderSize)
return 500;
// Read message
if (nLen > 0)
{
std::vector<char> vch (nLen);
stream.read (&vch[0], nLen);
strMessageRet = std::string (vch.begin (), vch.end ());
}
return nStatus;
}
json_spirit::Object CallRPC(const std::string& strMethod, const json_spirit::Array& params)
{
if (mapArgs["-rpcuser"] == "" && mapArgs["-rpcpassword"] == "")
throw std::runtime_error(strprintf(
_("You must set rpcpassword=<password> in the configuration file:\n%s\n"
"If the file does not exist, create it with owner-readable-only file permissions."),
GetConfigFile().string().c_str()));
// Connect to localhost
bool fUseSSL = GetBoolArg("-rpcssl", false);
boost::asio::io_service io_service;
boost::asio::ssl::context context(io_service, boost::asio::ssl::context::sslv23);
context.set_options(boost::asio::ssl::context::no_sslv2);
boost::asio::ssl::stream<boost::asio::ip::tcp::socket> sslStream(io_service, context);
SSLIOStreamDevice<boost::asio::ip::tcp> d(sslStream, fUseSSL);
boost::iostreams::stream< SSLIOStreamDevice<boost::asio::ip::tcp> > stream(d);
bool fWait = GetBoolArg("-rpcwait", false); // -rpcwait means try until server has started
do {
bool fConnected = d.connect(GetArg("-rpcconnect", "127.0.0.1"), GetArg("-rpcport", itostr(Params().RPCPort())));
if (fConnected) break;
if (fWait)
MilliSleep(1000);
else
throw std::runtime_error("couldn't connect to server");
} while (fWait);
// HTTP basic authentication
std::string strUserPass64 = EncodeBase64(mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"]);
std::map<std::string, std::string> mapRequestHeaders;
mapRequestHeaders["Authorization"] = std::string("Basic ") + strUserPass64;
// Send request
std::string strRequest = JSONRPCRequest(strMethod, params, 1);
std::string strPost = HTTPPost(strRequest, mapRequestHeaders);
stream << strPost << std::flush;
// Receive HTTP reply status
int nProto = 0;
int nStatus = ReadHTTPStatus(stream, nProto);
// Receive HTTP reply message headers and body
std::map<std::string, std::string> mapHeaders;
std::string strReply;
ReadHTTPMessage(stream, mapHeaders, strReply, nProto);
if (nStatus == HTTP_UNAUTHORIZED)
throw std::runtime_error("incorrect rpcuser or rpcpassword (authorization failed)");
else if (nStatus >= 400 && nStatus != HTTP_BAD_REQUEST && nStatus != HTTP_NOT_FOUND && nStatus != HTTP_INTERNAL_SERVER_ERROR)
throw std::runtime_error(strprintf("server returned HTTP error %d", nStatus));
else if (strReply.empty())
throw std::runtime_error("no response from server");
// Parse reply
json_spirit::Value valReply;
if (!read_string(strReply, valReply))
throw std::runtime_error("couldn't parse reply from server");
const json_spirit::Object& reply = valReply.get_obj();
if (reply.empty())
throw std::runtime_error("expected reply to have result, error and id properties");
return reply;
}
