void TSockSys::OnWrite(uv_write_t *WriteHnd, int Status) {
// cast to our write request object to get access to buffer
uv_write_req_t* _WriteHnd = (uv_write_req_t*)WriteHnd;
// get socket handle
uv_tcp_t* SockHnd = (uv_tcp_t*)WriteHnd->handle;
IAssert(SockSys.IsSockHnd((uint64)SockHnd));
// free buffer and write handle
free(_WriteHnd->Buffer.base);
free(_WriteHnd);
// get socket id
const uint64 SockId = SockSys.SockHndToIdH.GetDat((uint64)SockHnd);
IAssert(SockSys.IsSock(SockId));
// get socket event
const uint64 SockEventId = SockSys.SockHndToEventIdH.GetDat((uint64)SockHnd);
PSockEvent SockEvent;
if (SockSys.IsSockEvent(SockEventId)) {
SockEvent = SockSys.GetSockEvent(SockEventId);
} else {
SaveToErrLog("SockSys.OnWrite: Socket without SockEvent");
return;
}
// execute callback
if (Status == 0) {
SockEvent->OnWrite(SockId);
} else {
TStr ErrMsg = (Status == -1) ?
"SockSys.OnWrite: " + SockSys.GetLastErr() :
"SockSys.OnWrite: Error writing to socket";
SockEvent->OnError(SockId, Status, ErrMsg);
}
}
void TSockSys::OnAccept(uv_stream_t* ServerSockHnd, int Status) {
// get socket handle
uv_tcp_t* SockHnd = (uv_tcp_t*)ServerSockHnd;
IAssert(SockSys.IsSockHnd((uint64)SockHnd));
// get socket id
const uint64 SockId = SockSys.SockHndToIdH.GetDat((uint64)SockHnd);
IAssert(SockSys.IsSock(SockId));
// get socket event
const uint64 SockEventId = SockSys.SockHndToEventIdH.GetDat((uint64)SockHnd);
PSockEvent SockEvent;
if (SockSys.IsSockEvent(SockEventId)) {
SockEvent = SockSys.GetSockEvent(SockEventId);
} else {
SaveToErrLog("SockSys.OnAccept: Socket without SockEvent");
return;
}
// check for success status
if (Status == 0) {
// create a new socket for client connection
PSock ClientSock = TSock::New(SockEvent);
// get client socket handle
uv_tcp_t* ClientSockHnd = SockSys.SockIdToHndH.GetDat(ClientSock->GetSockId());
// accept request
const int AcceptResCd = uv_accept(ServerSockHnd, (uv_stream_t*)ClientSockHnd);
// start listening for incoming data
if (AcceptResCd == 0) {
int ReadStartResCd = uv_read_start((uv_stream_t*)ClientSockHnd, TSockSys::OnAlloc, TSockSys::OnRead);
// execute callback
if (ReadStartResCd == 0) {
SockEvent->OnAccept(ClientSock->GetSockId(), ClientSock);
} else {
TStr ErrMsg = (Status == -1) ?
"SockSys.OnAccept: Error starting read " + SockSys.GetLastErr() :
"SockSys.OnAccept: Error starting read";
SockEvent->OnError(SockId, ReadStartResCd, ErrMsg);
}
} else {
// handle errors
TStr ErrMsg = (Status == -1) ?
"SockSys.OnAccept: Error accepting new connection " + SockSys.GetLastErr() :
"SockSys.OnAccept: Error accepting new connection";
SockEvent->OnError(SockId, AcceptResCd, ErrMsg);
}
} else {
TStr ErrMsg = (Status == -1) ?
"SockSys.OnAccept: Error connecting" + SockSys.GetLastErr() :
"SockSys.OnAccept: Error connecting";
SockEvent->OnError(SockId, Status, ErrMsg);
}
}
void TSockSys::OnRead(uv_stream_t* SockHnd, ssize_t BufferLen, uv_buf_t Buffer) {
//TODO: check if we need to close _SockHnd
//uv_tcp_t* _SockHnd = (uv_tcp_t*)SockHnd;
// get socket handle
IAssert(SockSys.IsSockHnd((uint64)SockHnd));
// get socket id
const uint64 SockId = SockSys.SockHndToIdH.GetDat((uint64)SockHnd);
IAssert(SockSys.IsSock(SockId));
// get socket event
const uint64 SockEventId = SockSys.SockHndToEventIdH.GetDat((uint64)SockHnd);
PSockEvent SockEvent;
if (SockSys.IsSockEvent(SockEventId)) {
SockEvent = SockSys.GetSockEvent(SockEventId);
} else {
// cleanup (using delete as it was created in OnAlloc with new)
delete[] Buffer.base;
SaveToErrLog("SockSys.OnRead: Socket without SockEvent");
return;
}
// execute callback
if (BufferLen > 0) {
// we got data, move the ownership of buffer to TMIn
PSIn SIn = TMIn::New(Buffer.base, (int)BufferLen, true);
// send
SockEvent->OnRead(SockId, SIn);
} else {
uv_err_code Status = uv_last_error(SockSys.Loop).code;
// no data, might be error or end of stream
if (Status == UV_EOF) {
// no more data, close the socket handle
SockEvent->OnReadEof(SockId);
SockSys.DelIfSockTimer(SockId);
} else if (Status == UV_EAGAIN) {
// we'll wait
} else {
// error
TStr ErrMsg = "SockSys.OnRead: " + SockSys.GetLastErr();
SockEvent->OnError(SockId, Status, ErrMsg);
}
// cleanup (using delete as it was created in OnAlloc with new)
delete[] Buffer.base;
}
}
void TSockSys::OnClose(uv_handle_t* SockHnd) {
// check if we know about the socket
if (SockSys.IsSockHnd((uint64)SockHnd)) {
// get socket id
const uint64 SockId = SockSys.SockHndToIdH.GetDat((uint64)SockHnd);
// execute callback
const uint64 SockEventId = SockSys.SockHndToEventIdH.GetDat((uint64)SockHnd);
if (SockSys.IsSockEvent(SockEventId)) {
PSockEvent SockEvent = SockSys.GetSockEvent(SockEventId);
SockEvent->OnClose(SockId);
}
// delete socket shortcuts
SockSys.DelIfSockTimer(SockId);
SockSys.SockIdToHndH.DelKey(SockId);
SockSys.SockHndToIdH.DelKey((uint64)SockHnd);
SockSys.SockHndToEventIdH.DelKey((uint64)SockHnd);
// marke note that it's already closed
SockSys.ClosedSockIdSet.DelIfKey(SockId);
}
}
void TSockSys::OnConnect(uv_connect_t* ConnectHnd, int Status) {
// get socket handle
uv_tcp_t* SockHnd = (uv_tcp_t*)ConnectHnd->handle;
IAssert(SockSys.IsSockHnd((uint64)SockHnd));
// cleanup
free(ConnectHnd);
// get socket id
const uint64 SockId = SockSys.SockHndToIdH.GetDat((uint64)SockHnd);
IAssert(SockSys.IsSock(SockId));
// get socket event
const uint64 SockEventId = SockSys.SockHndToEventIdH.GetDat((uint64)SockHnd);
PSockEvent SockEvent;
if (SockSys.IsSockEvent(SockEventId)) {
SockEvent = SockSys.GetSockEvent(SockEventId);
} else {
SaveToErrLog("SockSys.OnConnect: Socket without SockEvent");
return;
}
// execute callback
if (Status == 0) {
SockEvent->OnConnect(SockId);
} else {
TStr ErrMsg = (Status == -1) ?
"SockSys.OnConnect: " + SockSys.GetLastErr() :
"SockSys.OnConnect: Error connecting";
SockEvent->OnError(SockId, Status, ErrMsg);
return;
}
// start listening for incoming data
int ResCd = uv_read_start((uv_stream_t*)SockHnd, TSockSys::OnAlloc, TSockSys::OnRead);
// check for errors
if (ResCd != 0) {
TStr ErrMsg = (Status == -1) ?
"SockSys.OnConnect: " + SockSys.GetLastErr() :
"SockSys.OnConnect: Error establishing read callbacks";
SockEvent->OnError(SockId, ResCd, ErrMsg);
}
}