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TraversalProto: Convert TraversalPacketType into an enum class

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Makes for strong typing and prevents namespace pollution.
This commit is contained in:
Lioncash
2021-01-19 14:11:39 -05:00
parent 2f0fb2056e
commit d2ea94195c
3 changed files with 43 additions and 39 deletions
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40
Source/Core/Common/TraversalServer.cpp
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@ -185,8 +185,9 @@ static const char* SenderName(sockaddr_in6* addr)
static void TrySend(const void* buffer, size_t size, sockaddr_in6* addr)
{
#if DEBUG
printf("-> %d %llu %s\n", ((TraversalPacket*)buffer)->type,
(long long)((TraversalPacket*)buffer)->requestId, SenderName(addr));
const auto* packet = static_cast<const TraversalPacket*>(buffer);
printf("-> %d %llu %s\n", static_cast<int>(packet->type),
static_cast<long long>(packet->requestId), SenderName(addr));
#endif
if ((size_t)sendto(sock, buffer, size, 0, (sockaddr*)addr, sizeof(*addr)) != size)
{
@ -227,7 +228,7 @@ static void ResendPackets()
{
if (info->tries >= NUMBER_OF_TRIES)
{
if (info->packet.type == TraversalPacketPleaseSendPacket)
if (info->packet.type == TraversalPacketType::PleaseSendPacket)
{
todoFailures.push_back(std::make_pair(info->packet.pleaseSendPacket.address, info->misc));
}
@ -245,7 +246,7 @@ static void ResendPackets()
for (const auto& p : todoFailures)
{
TraversalPacket* fail = AllocPacket(MakeSinAddr(p.first));
fail->type = TraversalPacketConnectFailed;
fail->type = TraversalPacketType::ConnectFailed;
fail->connectFailed.requestId = p.second;
fail->connectFailed.reason = TraversalConnectFailedReason::ClientDidntRespond;
}
@ -254,12 +255,13 @@ static void ResendPackets()
static void HandlePacket(TraversalPacket* packet, sockaddr_in6* addr)
{
#if DEBUG
printf("<- %d %llu %s\n", packet->type, (long long)packet->requestId, SenderName(addr));
printf("<- %d %llu %s\n", static_cast<int>(packet->type),
static_cast<long long>(packet->requestId), SenderName(addr));
#endif
bool packetOk = true;
switch (packet->type)
{
case TraversalPacketAck:
case TraversalPacketType::Ack:
{
auto it = outgoingPackets.find(packet->requestId);
if (it == outgoingPackets.end())
@ -267,18 +269,18 @@ static void HandlePacket(TraversalPacket* packet, sockaddr_in6* addr)
OutgoingPacketInfo* info = &it->second;
if (info->packet.type == TraversalPacketPleaseSendPacket)
if (info->packet.type == TraversalPacketType::PleaseSendPacket)
{
TraversalPacket* ready = AllocPacket(MakeSinAddr(info->packet.pleaseSendPacket.address));
if (packet->ack.ok)
{
ready->type = TraversalPacketConnectReady;
ready->type = TraversalPacketType::ConnectReady;
ready->connectReady.requestId = info->misc;
ready->connectReady.address = MakeInetAddress(info->dest);
}
else
{
ready->type = TraversalPacketConnectFailed;
ready->type = TraversalPacketType::ConnectFailed;
ready->connectFailed.requestId = info->misc;
ready->connectFailed.reason = TraversalConnectFailedReason::ClientFailure;
}
@ -287,17 +289,17 @@ static void HandlePacket(TraversalPacket* packet, sockaddr_in6* addr)
outgoingPackets.erase(it);
break;
}
case TraversalPacketPing:
case TraversalPacketType::Ping:
{
auto r = EvictFind(connectedClients, packet->ping.hostId, true);
packetOk = r.found;
break;
}
case TraversalPacketHelloFromClient:
case TraversalPacketType::HelloFromClient:
{
u8 ok = packet->helloFromClient.protoVersion <= TraversalProtoVersion;
TraversalPacket* reply = AllocPacket(*addr);
reply->type = TraversalPacketHelloFromServer;
reply->type = TraversalPacketType::HelloFromServer;
reply->helloFromServer.ok = ok;
if (ok)
{
@ -323,32 +325,34 @@ static void HandlePacket(TraversalPacket* packet, sockaddr_in6* addr)
}
break;
}
case TraversalPacketConnectPlease:
case TraversalPacketType::ConnectPlease:
{
TraversalHostId& hostId = packet->connectPlease.hostId;
auto r = EvictFind(connectedClients, hostId);
if (!r.found)
{
TraversalPacket* reply = AllocPacket(*addr);
reply->type = TraversalPacketConnectFailed;
reply->type = TraversalPacketType::ConnectFailed;
reply->connectFailed.requestId = packet->requestId;
reply->connectFailed.reason = TraversalConnectFailedReason::NoSuchClient;
}
else
{
TraversalPacket* please = AllocPacket(MakeSinAddr(*r.value), packet->requestId);
please->type = TraversalPacketPleaseSendPacket;
please->type = TraversalPacketType::PleaseSendPacket;
please->pleaseSendPacket.address = MakeInetAddress(*addr);
}
break;
}
default:
fprintf(stderr, "received unknown packet type %d from %s\n", packet->type, SenderName(addr));
fprintf(stderr, "received unknown packet type %d from %s\n", static_cast<int>(packet->type),
SenderName(addr));
break;
}
if (packet->type != TraversalPacketAck)
if (packet->type != TraversalPacketType::Ack)
{
TraversalPacket ack = {};
ack.type = TraversalPacketAck;
ack.type = TraversalPacketType::Ack;
ack.requestId = packet->requestId;
ack.ack.ok = packetOk;
TrySend(&ack, sizeof(ack), addr);