/** \brief Start the action
*/
kad_err_t kad_ping_rpc_t::start(kad_peer_t *kad_peer, const kad_addr_t &remote_addr
, const delay_t &expire_delay
, kad_ping_rpc_cb_t *callback, void *userptr) throw()
{
kad_pkttype_t pkttype(kad_peer->get_profile().pkttype());
kad_err_t kad_err;
// copy some parameters
this->kad_peer = kad_peer;
this->callback = callback;
this->userptr = userptr;
// build the packet to send
pkt_t request_payload;
request_payload = build_request_payload();
// create the kad_client_t and start it
m_client_rpc = nipmem_new kad_client_rpc_t();
kad_err = m_client_rpc->start(kad_peer, request_payload
, pkttype.PING_REQUEST(), pkttype.PING_REPLY()
, remote_addr, expire_delay, this);
if( kad_err.failed() ) return kad_err;
// update the statistic
kad_peer->get_stat()->nb_ping_sent++;
// return no error
return kad_err_t::OK;
}
/** \brief callback notified when a kad_srvcnx_t receive a packet
*
* - this function only forward the packet to the proper kad_peer_t, the actual
* processing is happening in the kad_peer_t itself
*/
bool kad_listener_t::neoip_kad_srvcnx_cb(void *cb_userptr, kad_srvcnx_t &cb_kad_srvcnx
, pkt_t &pkt, const ipport_addr_t &local_oaddr
, const ipport_addr_t &remote_oaddr) throw()
{
const kad_profile_t & profile = peer_db.front()->get_profile();
pkt_t orig_pkt = pkt;
kad_peer_t * kad_peer = NULL;
kad_pkttype_t pkttype(profile.pkttype());
kad_realmid_t dest_realmid;
kad_peerid_t dest_peerid;
// log to debug
KLOG_DBG("enter pkt=" << pkt);
// parse the incoming packet
try {
// read the pkttype
pkt >> pkttype;
// read the realm id - if realmid_in_pkt_ok()
if( profile.rpc().realmid_in_pkt_ok() ) pkt >> dest_realmid;
// get the destination peerid from the incoming packet - if dest_peerid_in_pkt_ok()
if( profile.rpc().dest_peerid_in_pkt_ok() ) pkt >> dest_peerid;
} catch(serial_except_t &e) {
KLOG_INFO("Cant parse incoming packet due to " << e.what() );
goto error;
}
// try to find a kad_peer_t matching this realmid/peerid
// - it works even if they are null
kad_peer = get_kad_peer(dest_realmid, dest_peerid);
// if the realm doesnt exist, log and exit
if( !kad_peer ){
// log the event
KLOG_INFO("Received a packet " << pkttype << " for an unexisting realmid=" << dest_realmid
<< " peerid=" << dest_peerid);
// send a kad_pkttype_t::RESET_REPLY, if the packet is not itself a RESET_REPLY
// - similar to "an icmp error MUST NOT be replied to an icmp error" - rfc1812.4.3.2.7
if( pkttype != pkttype.RESET_REPLY() ){
// build the kad_pkttype_t::RESET_REPLY
pkt = pkt_t();
pkt << pkttype.RESET_REPLY();
pkt.append(orig_pkt.void_ptr(), orig_pkt.length());
// return now
return true;
}
goto error;
}
// log to debug
KLOG_DBG("received a pkttype=" << pkttype << " for realmid=" << dest_realmid
<< " peerid=" << dest_peerid);
// forward the packet to the proper realm
pkt = kad_peer->handle_request(orig_pkt, local_oaddr, remote_oaddr);
return true;
error:;
// swallow the packet as there is no reply
pkt = pkt_t();
// keep the server running anyway
return true;
}
/** \brief function to test a pkttype_t
*/
nunit_res_t pkttype_testclass_t::test_null(const nunit_testclass_ftor_t &testclass_ftor) throw()
{
// set variable
pkttype_profile_t profile(10, 2, pkttype_profile_t::UINT32);
nunit_pkttype_t pkttype(profile);
// test the .is_null()
NUNIT_ASSERT( pkttype.is_null() == true );
pkttype = pkttype.PKT_REPLY();
NUNIT_ASSERT( pkttype.is_null() != true );
// return no error
return NUNIT_RES_OK;
}
static int
p_seprint(Msg *m)
{
Hdr *h;
int dport, sport;
if(m->pe - m->ps < ILLEN)
return -1;
h = (Hdr*)m->ps;
m->ps += ILLEN;
dport = NetS(h->dport);
sport = NetS(h->sport);
demux(p_mux, sport, dport, m, &dump);
m->p = seprint(m->p, m->e, "s=%d d=%d t=%s id=%lud ack=%lud spec=%d ck=%4.4ux ln=%d",
sport, dport, pkttype(h->type),
(ulong)NetL(h->id), (ulong)NetL(h->ack),
h->spec,
NetS(h->sum), NetS(h->len));
return 0;
}