/**
* Send message to a local entity. If the output message destination is a peer
* MIHF redirect it to the message_out module.
*
* @param msg The output message.
*/
void transmit::operator()(meta_message_ptr& msg)
{
// TODO: remove try catch
try{
// FIXME: Response shouldn't be send to MIH Users
if(msg->opcode() != mih::operation::request) {
user_entry user = _user_abook.get(msg->destination().to_string());
if(msg->opcode() == mih::operation::response) {
msg->opcode(mih::operation::confirm);
}
utils::udp_send(_io, msg, user.ip.c_str(), user.port, _port);
ODTONE_LOG(1, "(transmit) sending local message to: ",
msg->destination().to_string(), " : ", user.ip, " : ", user.port);
}
else {
link_entry link = _link_abook.get(msg->destination().to_string());
utils::udp_send(_io, msg, link.ip.c_str(), link.port, _port);
ODTONE_LOG(1, "(transmit) sending local message to: ",
msg->destination().to_string(), " : ", link.ip, " : ", link.port);
}
} catch (...) {
if(msg->opcode() == mih::operation::confirm) {
msg->opcode(mih::operation::response);
}
ODTONE_LOG(1, "(transmit) forwarding to message_out");
_msg_out(msg);
}
}
/**
* Checks, in the transaction pool, if the incoming message belongs to a pending
* transaction. If true it runs the transaction, otherwise it creates a new
* transaction.
*
* @param in The input message.
*/
void message_in::operator()(meta_message_ptr& in)
{
// TODO: FIXME: check page 143 when adding support for fragment payload
if ((in->ackrsp() && (in->opcode() == mih::operation::request || in->opcode() == mih::operation::indication))
||
(!in->ackrsp() && in->opcode() == mih::operation::response)
||
(in->ackrsp() && in->opcode() == mih::operation::response && in->has_service_specific_tlv()))
{
// src
src_transaction_ptr t;
_tpool.find(in->source(), in->tid(), t);
if (t) {
t->in = in;
t->msg_in_avail = true;
if (t->start_ack_requestor)
t->ack_requestor();
if (t->start_ack_responder)
t->ack_responder();
if(t->transaction_status == ONGOING)
if(!(in->ackrsp() == true && in->opcode() == mih::operation::request))
t->run();
if (t->transaction_status != ONGOING && t->ack_requestor_status != ONGOING)
_tpool.del(t);
} else {
new_dst_transaction(in);
}
} else {
dst_transaction_ptr t;
_tpool.find(in->source(), in->tid(), t);
if (t) {
t->in = in;
t->msg_in_avail = true;
if (t->start_ack_requestor)
t->ack_requestor();
if(t->transaction_status == ONGOING)
t->run();
if (t->start_ack_responder && t->transaction_status == ONGOING)
t->ack_responder();
if (t->transaction_status != ONGOING && t->ack_requestor_status != ONGOING)
_tpool.del(t);
} else {
new_dst_transaction(in);
}
}
}
/**
* Checks, in the transaction pool, if the outgoing message belongs to a pending
* transaction. If true it runs the transaction, otherwise it creates a new
* transaction.
*
* @param out The output message.
*/
void message_out::operator()(meta_message_ptr& out)
{
out->ackreq(true); // FIXME: read from config file
if (out->opcode() == mih::operation::response) {
dst_transaction_ptr t;
dst_transaction_set::iterator it;
_tpool.find(out->destination(), out->tid(), t);
if (t) {
t->out = out;
t->msg_out_avail = true;
if (t->start_ack_requestor)
t->ack_requestor();
if (t->start_ack_responder)
t->ack_responder();
if(t->transaction_status == ONGOING)
t->run();
if (t->transaction_status != ONGOING && t->ack_requestor_status != ONGOING)
_tpool.del(t);
} else {
new_src_transaction(out);
}
} else if ((out->opcode() == mih::operation::indication) || (out->opcode() == mih::operation::request)) {
src_transaction_ptr t;
_tpool.find(out->destination(), out->tid(), t);
if (t) {
t->out = out;
t->msg_out_avail = true;
if (t->start_ack_requestor)
t->ack_requestor();
if (t->start_ack_responder)
t->ack_responder();
if(t->transaction_status == ONGOING)
t->run();
if (t->transaction_status != ONGOING && t->ack_requestor_status != ONGOING)
_tpool.del(t);
} else {
new_src_transaction(out);
}
}
}
//
// Currently Command_Service messages are handled by a default local
// user. If this MIHF is the destination of the message, check for a
// pending transaction and forward the message.
//
bool command_service::generic_command_response(const char *recv_msg,
const char *send_msg,
meta_message_ptr &in,
meta_message_ptr &out)
{
log(1, recv_msg, in->source().to_string());
if(utils::this_mihf_is_destination(in)) {
//
// Kick this message to default MIH User as an indication
//
log(1, send_msg);
in->opcode(mih::operation::confirm);
in->destination(mih::id("user"));
//
// source identifier is the remote MIHF
//
_transmit(in);
return false;
} else {
utils::forward_request(in, _lpool, _transmit);
return false;
}
}
/**
* Parse all capabilities from MIH Capability Discover message and stores
* them.
*
* @param in input message.
* @param out output message.
*/
void service_management::get_capabilities(meta_message_ptr& in,
meta_message_ptr& out)
{
address_entry mihf_info;
mihf_info.ip = in->ip();
mihf_info.port = in->port();
if(in->opcode() == mih::operation::request) {
*in >> mih::request(mih::request::capability_discover)
& mih::tlv_net_type_addr_list(mihf_info.capabilities_list_net_type_addr)
& mih::tlv_event_list(mihf_info.capabilities_event_list)
& mih::tlv_command_list(mihf_info.capabilities_cmd_list)
& mih::tlv_query_type_list(mihf_info.capabilities_query_type)
& mih::tlv_transport_option_list(mihf_info.capabilities_trans_list)
& mih::tlv_mbb_ho_supp_list(mihf_info.capabilities_mbb_ho_supp);
} else if(in->opcode() == mih::operation::response) {
/**
* Run Acknowledge Responder State Machine transaction.
*/
void ack_responder()
{
switch(ack_rsp_state)
{
case ACK_RSP_INIT:
goto _rsp_init_lbl_;
case ACK_RSP_RETURN_ACK:
goto _rsp_return_ack_lbl_;
case ACK_RSP_PIGGYBACKING:
goto _rsp_piggybacking_lbl_;
case ACK_RSP_RETURN_DUPLICATE:
goto _rsp_return_duplicate_lbl_;
}
_rsp_init_lbl_:
{
ack->ackreq(false);
ack->ackrsp(true);
ack->opcode((mih::operation::type)opcode);
ack->tid(tid);
ack->mid(in->mid());
ack->source(my_mihf_id);
ack->destination(peer_mihf_id);
ack->ip(in->ip());
ack->port(in->port());
if (msg_out_avail)
goto _rsp_piggybacking_lbl_;
else
{
_netsap.send(ack);
msg_in_avail = false;
goto _rsp_return_ack_lbl_;
}
return;
}
_rsp_return_ack_lbl_:
{
ack_rsp_state = ACK_RSP_RETURN_ACK;
if(msg_in_avail)
{
_netsap.send(ack);
msg_in_avail = false;
}
else if (msg_out_avail)
goto _rsp_piggybacking_lbl_;
return;
}
_rsp_piggybacking_lbl_:
{
ack_rsp_state = ACK_RSP_PIGGYBACKING;
out->ackrsp(true);
dup = out;
if (msg_in_avail)
goto _rsp_return_duplicate_lbl_;
return;
}
_rsp_return_duplicate_lbl_:
{
ack_rsp_state = ACK_RSP_RETURN_DUPLICATE;
if (msg_in_avail) {
_netsap.send(dup);
msg_in_avail = false;
}
}
}
