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Impl sending queued packet

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TODO receiving packet
This commit is contained in:
Stephen Seo 2019-08-18 18:34:45 +09:00
parent 29009c2b8c
commit bf27c328a6
1 changed files with 57 additions and 1 deletions
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58
cpp_impl/src/UDPConnection.cpp
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@ -365,9 +365,65 @@ void UDPC_update(void *ctx) {
iter->second.sendPkts.pop();
}
std::unique_ptr<char[]> buf = std::make_unique<char[]>(20 + pInfo.dataSize);
// TODO prepare and send packet
UDPC::preparePacket(
buf.get(),
c->protocolID,
iter->second.id,
iter->second.rseq,
iter->second.ack,
&iter->second.lseq,
pInfo.flags & 0xC);
std::memcpy(buf.get() + 20, pInfo.data, pInfo.dataSize);
struct sockaddr_in destinationInfo;
destinationInfo.sin_family = AF_INET;
destinationInfo.sin_addr.s_addr = iter->first;
destinationInfo.sin_port = htons(iter->second.port);
long int sentBytes = sendto(
c->socketHandle,
buf.get(),
pInfo.dataSize + 20,
0,
(struct sockaddr*) &destinationInfo,
sizeof(struct sockaddr_in));
if(sentBytes != 20 + pInfo.dataSize) {
// TODO log fail send packet
}
if((pInfo.flags & 0x4) == 0) {
// is check-received, store data in case packet gets lost
UDPC_PacketInfo sentPInfo;
std::memcpy(sentPInfo.data, buf.get(), 20 + pInfo.dataSize);
sentPInfo.flags = 0;
sentPInfo.dataSize = 20 + pInfo.dataSize;
sentPInfo.sender = UDPC::LOCAL_ADDR;
sentPInfo.receiver = iter->first;
sentPInfo.senderPort = c->socketInfo.sin_port;
sentPInfo.receiverPort = iter->second.port;
iter->second.sentPkts.push_back(std::move(pInfo));
while(iter->second.sentPkts.size() > UDPC_SENT_PKTS_MAX_SIZE) {
iter->second.sentPkts.pop_front();
}
} else {
// is not check-received, no data stored but other data is kept
UDPC_PacketInfo sentPInfo;
sentPInfo.flags = 0x4;
sentPInfo.dataSize = 0;
sentPInfo.sender = UDPC::LOCAL_ADDR;
sentPInfo.receiver = iter->first;
sentPInfo.senderPort = c->socketInfo.sin_port;
sentPInfo.receiverPort = iter->second.port;
iter->second.sentPkts.push_back(std::move(pInfo));
while(iter->second.sentPkts.size() > UDPC_SENT_PKTS_MAX_SIZE) {
iter->second.sentPkts.pop_front();
}
}
}
}
// TODO receive packet
// TODO impl
}