extern eOresult_t eo_transmitter_outpacket_Prepare(EOtransmitter *p, uint16_t *numberofrops)
{
uint16_t remainingbytes;
if((NULL == p) || (NULL == numberofrops))
{
return(eores_NOK_nullpointer);
}
// clear the content of the ropframe to transmit which uses the same storage of the packet ...
eo_ropframe_Clear(p->ropframereadytotx);
// add to it the ropframe of regulars. keep it afterwards. dont clear it !!!
eov_mutex_Take(p->mtx_regulars, eok_reltimeINFINITE);
eo_ropframe_Append(p->ropframereadytotx, p->ropframeregulars, &remainingbytes);
eov_mutex_Release(p->mtx_regulars);
// add the ropframe of occasionals ... and then clear it
eov_mutex_Take(p->mtx_occasionals, eok_reltimeINFINITE);
eo_ropframe_Append(p->ropframereadytotx, p->ropframeoccasionals, &remainingbytes);
eo_ropframe_Clear(p->ropframeoccasionals);
eov_mutex_Release(p->mtx_occasionals);
// add the ropframe of replies ... and then clear it
eov_mutex_Take(p->mtx_replies, eok_reltimeINFINITE);
eo_ropframe_Append(p->ropframereadytotx, p->ropframereplies, &remainingbytes);
eo_ropframe_Clear(p->ropframereplies);
eov_mutex_Release(p->mtx_replies);
*numberofrops = eo_ropframe_ROP_NumberOf(p->ropframereadytotx);
return(eores_OK);
}
extern eOresult_t eo_receiver_GetReply(EOreceiver *p, EOropframe **ropframereply)
{
if((NULL == p) || (NULL == ropframereply))
{
return(eores_NOK_nullpointer);
}
if(0 == eo_ropframe_ROP_NumberOf(p->ropframereply))
{
*ropframereply = p->ropframereply;
return(eores_NOK_generic);
}
*ropframereply = p->ropframereply;
return(eores_OK);
}
extern eOresult_t eo_receiver_Process(EOreceiver *p, EOpacket *packet, uint16_t *numberofrops, eObool_t *thereisareply, eOabstime_t *transmittedtime)
{
uint16_t rxremainingbytes = 0;
uint16_t txremainingbytes = 0;
uint8_t* payload;
uint16_t size;
uint16_t capacity;
uint16_t nrops;
uint16_t i;
eOresult_t res;
eOipv4addr_t remipv4addr;
eOipv4port_t remipv4port;
uint64_t rec_seqnum;
uint64_t rec_ageoframe;
uint16_t numofprocessedrops = 0;
if((NULL == p) || (NULL == packet))
{
return(eores_NOK_nullpointer);
}
// clear the ropframereply w/ eo_ropframe_Clear(). the clear operation also makes it safe to manipulate p->ropframereplay with *_quickversion
eo_ropframe_Clear(p->ropframereply);
// we get the ip address and port of the incoming packet.
// the remaddr can be any. however, if the eo_receiver_Process() is called by the EOtransceiver, it will be only the one of the remotehost
eo_packet_Addressing_Get(packet, &remipv4addr, &remipv4port);
// then we assign them to the ones of the EOreceiver. by doing so we force the receive to accept packets from everyboby.
//p->ipv4addr = remipv4addr;
//p->ipv4port = remipv4port;
// retrieve payload from the incoming packet and load the ropframe with it
eo_packet_Payload_Get(packet, &payload, &size);
eo_packet_Capacity_Get(packet, &capacity);
eo_ropframe_Load(p->ropframeinput, payload, size, capacity);
// verify if the ropframeinput is valid w/ eo_ropframe_IsValid()
if(eobool_false == eo_ropframe_IsValid(p->ropframeinput))
{
#if defined(USE_DEBUG_EORECEIVER)
{ // DEBUG
p->debug.rxinvalidropframes ++;
}
#endif
p->error_invalidframe.remipv4addr = remipv4addr;
p->error_invalidframe.ropframe = p->ropframeinput;
s_eo_receiver_on_error_invalidframe(p);
if(NULL != thereisareply)
{
*thereisareply = eobool_false;
}
return(eores_NOK_generic);
}
// check sequence number
rec_seqnum = eo_ropframe_seqnum_Get(p->ropframeinput);
rec_ageoframe = eo_ropframe_age_Get(p->ropframeinput);
if(p->rx_seqnum == eok_uint64dummy)
{
//this is the first received ropframe or ... the sender uses dummy seqnum
p->rx_seqnum = rec_seqnum;
p->tx_ageofframe = rec_ageoframe;
}
else
{
if(rec_seqnum != (p->rx_seqnum+1))
{
#if defined(USE_DEBUG_EORECEIVER)
{
p->debug.errorsinsequencenumber ++;
}
#endif
// must set values
p->error_seqnumber.remipv4addr = remipv4addr;
p->error_seqnumber.rec_seqnum = rec_seqnum;
p->error_seqnumber.exp_seqnum = p->rx_seqnum+1;
p->error_seqnumber.timeoftxofcurrent = rec_ageoframe;
p->error_seqnumber.timeoftxofprevious = p->tx_ageofframe;
s_eo_receiver_on_error_seqnumber(p);
}
p->rx_seqnum = rec_seqnum;
p->tx_ageofframe = rec_ageoframe;
}
nrops = eo_ropframe_ROP_NumberOf_quickversion(p->ropframeinput);
for(i=0; i<nrops; i++)
{
// - get the rop w/ eo_ropframe_ROP_Parse()
// if we have a valid ropinput the following eo_ropframe_ROP_Parse() returns OK.
// in all cases rxremainingbytes contains the number of bytes we still need to parse. in case of
// unrecoverable error in the ropframe res is NOK and rxremainingbytes is 0.
res = eo_ropframe_ROP_Parse(p->ropframeinput, p->ropinput, &rxremainingbytes);
if(eores_OK == res)
{ // we have a valid ropinput
numofprocessedrops++;
// - use the agent w/ eo_agent_InpROPprocess() and retrieve the ropreply.
eo_agent_InpROPprocess(p->agent, p->ropinput, remipv4addr, p->ropreply);
// - if ropreply is ok w/ eo_rop_GetROPcode() then add it to ropframereply w/ eo_ropframe_ROP_Add()
if(eo_ropcode_none != eo_rop_GetROPcode(p->ropreply))
{
res = eo_ropframe_ROP_Add(p->ropframereply, p->ropreply, NULL, NULL, &txremainingbytes);
#if defined(USE_DEBUG_EORECEIVER)
{ // DEBUG
if(eores_OK != res)
{
p->debug.lostreplies ++;
}
}
#endif
}
}
// we stop the decoding if rxremainingbytes has reached zero
if(0 == rxremainingbytes)
{
break;
}
}
if(NULL != numberofrops)
{
*numberofrops = numofprocessedrops;
}
// if any rop inside ropframereply w/ eo_ropframe_ROP_NumberOf() then sets thereisareply
if(NULL != thereisareply)
{
*thereisareply = (0 == eo_ropframe_ROP_NumberOf(p->ropframereply)) ? (eobool_false) : (eobool_true);
// dont use the quickversion because it may be that ropframereply is dummy
//*thereisareply = (0 == eo_ropframe_ROP_NumberOf_quickversion(p->ropframereply)) ? (eobool_false) : (eobool_true);
}
if(NULL != transmittedtime)
{
*transmittedtime = eo_ropframe_age_Get(p->ropframeinput);
}
return(eores_OK);
}