1 /***************************************************************************
2 * Copyright (C) 2006 by Gerd v. Egidy *
5 * This library is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU Lesser General Public License version *
7 * 2.1 as published by the Free Software Foundation. *
9 * This library is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU Lesser General Public License for more details. *
14 * You should have received a copy of the GNU Lesser General Public *
15 * License along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
18 ***************************************************************************/
23 #include <boost/archive/binary_oarchive.hpp>
24 #include <boost/archive/binary_iarchive.hpp>
25 #include <boost/archive/xml_oarchive.hpp>
26 #include <boost/archive/xml_iarchive.hpp>
27 #include <boost/serialization/serialization.hpp>
29 #include <boost/bind.hpp>
31 #include "command_client.hxx"
42 command_client::command_client(client_connection& _c, long long _command_timeout_usec, long long _hello_timeout_usec)
45 command_timeout_usec=_command_timeout_usec;
46 hello_timeout_usec=_hello_timeout_usec;
49 c.add_callback(new_connection,bind(&command_client::read_hello, boost::ref(*this)));
54 /** @brief replace the connection currently in use with a new one
56 @param _c reference of the new connection
58 @note the old connection must still be valid when this method is called,
59 it can safely be deleted after this method returned
61 @note all callbacks registered on the old connection will be copied over
64 void command_client::replace_connection(client_connection& _c)
66 // copy all callbacks registered on the old connection
67 for(callback_event_type e=static_cast<callback_event_type>(0);
69 e=static_cast<callback_event_type>(static_cast<int>(e)+1))
71 list<boost::function<void ()> > evcb=c.get_callback_list(e);
73 for (list<boost::function<void ()> >::iterator i=evcb.begin(); i != evcb.end(); i++)
74 _c.add_callback(e,*i);
77 // replace the connection
83 std::string command_client::read_packet(const long long &usec_timeout)
86 bool got_packet=false;
87 long long my_timeout=usec_timeout;
88 while(!(got_packet=c.get_packet(resultpacket)) && my_timeout > 0 && !c.is_closed())
89 c.fill_buffer(my_timeout,&my_timeout);
92 throw t2n_transfer_error("timeout exceeded");
97 void command_client::read_hello()
100 bool got_packet=false;
101 long long my_timeout=hello_timeout_usec;
102 while(!(got_packet=c.get_packet(resultpacket)) && my_timeout > 0 && !c.is_closed())
104 c.fill_buffer(my_timeout,&my_timeout);
106 c.peek_packet(resultpacket);
107 check_hello(resultpacket); // will throw before timeout if wrong data received
111 throw t2n_transfer_error("timeout exceeded");
113 if (!check_hello(resultpacket))
114 throw t2n_version_mismatch("illegal hello received (incomplete): "+resultpacket);
117 bool command_client::check_hello(const string& hellostr)
119 istringstream hello(hellostr);
123 if (hello.read(&chk,1))
126 throw t2n_version_mismatch("illegal hello received (T2N)");
131 if (hello.read(&chk,1))
134 throw t2n_version_mismatch("illegal hello received (T2N)");
139 if (hello.read(&chk,1))
142 throw t2n_version_mismatch("illegal hello received (T2N)");
147 if (hello.read(&chk,1))
150 throw t2n_version_mismatch("illegal hello received (T2N)");
156 if (hello >> prot_version)
158 if (prot_version != PROTOCOL_VERSION)
159 throw t2n_version_mismatch("not compatible with the server protocol version");
164 if (hello.read(&chk,1))
167 throw t2n_version_mismatch("illegal hello received (1. ;)");
173 if (hello.read((char*)&hbo,sizeof(hbo)))
176 throw t2n_version_mismatch("host byte order not matching");
181 if (hello.read(&chk,1))
184 throw t2n_version_mismatch("illegal hello received (2. ;)");
192 void command_client::send_command(command* cmd, result_container &res)
195 command_container cc(cmd);
196 boost::archive::binary_oarchive oa(ofs);
202 catch(boost::archive::archive_exception &e)
205 msg << "archive_exception while serializing on client-side, code " << e.code << " (" << e.what() << ")";
206 throw t2n_serialization_error(msg.str());
212 if ((ostr=c.get_logstream(fulldebug))!=NULL)
214 (*ostr) << "sending command, decoded data: " << std::endl;
215 boost::archive::xml_oarchive xo(*ostr);
216 xo << BOOST_SERIALIZATION_NVP(cc);
221 istringstream ifs(read_packet(command_timeout_usec));
222 boost::archive::binary_iarchive ia(ifs);
228 catch(boost::archive::archive_exception &e)
231 msg << "archive_exception while deserializing on client-side, code " << e.code << " (" << e.what() << ")";
232 throw t2n_serialization_error(msg.str());
237 if ((ostr=c.get_logstream(fulldebug))!=NULL)
239 (*ostr) << "received result, decoded data: " << std::endl;
240 boost::archive::xml_oarchive xo(*ostr);
241 xo << BOOST_SERIALIZATION_NVP(res);