void SocketTrySend(HSocket hs, const char* ptr, int nbytes, int milliseconds, transresult_t& rt)
{
rt.nbytes = 0;
rt.nresult = 0;
if(!ptr|| nbytes<1)
{
return;
}
int n;
CMyTimeSpan start;
while(1)
{
n = send(hs, ptr+rt.nbytes, nbytes, NONBLOCKREADWRITE|SENDNOSIGNAL);
if(n>0)
{
rt.nbytes += n;
nbytes -= n;
if(rt.nbytes >= nbytes)
{
rt.nresult = 0;
break;
}
}
else if( n==0)
{
rt.nresult= -2;
break;
}
else
{
n = GetLastSocketError();
if(ETRYAGAIN(n))
{
// CLightThread::DiscardTimeSlice();
int dwSleep=20;
std::this_thread::sleep_for(std::chrono::milliseconds(dwSleep*1000));
}
else
{
rt.nresult = -1;
break;
}
}
if(start.GetSpaninMilliseconds() > (unsigned int)milliseconds)
{
rt.nresult= 1;
break;
}
}
}
// if timeout occurs, nbytes=-1, nresult=1
// if socket error, nbyte=-1, nresult=-1
// if the other side has disconnected in either block mode or nonblock mode, nbytes=0, nresult=-1
void SocketTryRecv(HSocket hs, char* ptr, int nbytes, int milliseconds, transresult_t& rt)
{
rt.nbytes = 0;
rt.nresult = 0;
if(!ptr|| nbytes<1)
{
return;
}
if(milliseconds>2)
{
CMyTimeSpan start;
while(1)
{
rt.nbytes = recv(hs, ptr, nbytes, NONBLOCKREADWRITE);
if(rt.nbytes>0)
{
break;
}
else if(rt.nbytes==0)
{
rt.nresult = -1;
break;
}
else
{
rt.nresult = GetLastSocketError();
if( ETRYAGAIN(rt.nresult))
{
if(start.GetSpaninMilliseconds() > (unsigned int)milliseconds)
{
rt.nresult= 1;
break;
}
//CLightThread::DiscardTimeSlice();
int dwSleep=20;
std::this_thread::sleep_for(std::chrono::milliseconds(dwSleep*1000));
}
else
{
rt.nresult = -1;
break;
}
}
}
}
else
{
SocketRecv(hs, ptr, nbytes, rt);
}
}
// if timeout occurs, nbytes=-1, nresult=1
// if socket error, nbyte=-1, nresult=-1
// if the other side has disconnected in either block mode or nonblock mode, nbytes=0, nresult=-1
void SocketTryRecv(HSocket hs, char *ptr, int nbytes, int milliseconds, transresult_t &rt)
{
rt.nbytes = 0;
rt.nresult = 0;
if(!ptr|| nbytes<1) return;
if(milliseconds>2)
{
CMyTimeSpan start;
while(1)
{
rt.nbytes = recv(hs, ptr, nbytes, NONBLOCKREADWRITE);
if(rt.nbytes>0)
{
break;
}
else if(rt.nbytes==0)
{
rt.nresult = -1;
break;
}
else
{
rt.nresult = GetLastSocketError();
if( ETRYAGAIN(rt.nresult))
{
if(start.GetSpaninMilliseconds()>milliseconds) { rt.nresult= 1; break;}
CLightThread::DiscardTimeSlice();
}
else
{
rt.nresult = -1;
break;
}
}
}
}
else
{
SocketRecv(hs, ptr, nbytes, rt);
}
}
// nbytes= the count of bytes sent
// if timeout occurs, nresult=1
// if socket error, nresult=-1,
// if the other side has disconnected in either block mode or nonblock mode, nresult=-2
void SocketTrySend(HSocket hs, const char *ptr, int nbytes, int milliseconds, transresult_t &rt)
{
rt.nbytes = 0;
rt.nresult = 0;
if(!ptr|| nbytes<1) return;
int n;
CMyTimeSpan start;
while(1)
{
n = send(hs, ptr+rt.nbytes, nbytes, NONBLOCKREADWRITE|SENDNOSIGNAL);
if(n>0)
{
rt.nbytes += n;
nbytes -= n;
if(rt.nbytes >= nbytes) { rt.nresult = 0; break; }
}
else if( n==0)
{
rt.nresult= -2;
break;
}
else
{
n = GetLastSocketError();
if(ETRYAGAIN(n))
{
CLightThread::DiscardTimeSlice();
}
else
{
rt.nresult = -1;
break;
}
}
if(start.GetSpaninMilliseconds()>milliseconds) { rt.nresult= 1; break;}
}
}
// if timeout occurs, nbytes=-1, nresult=1
// if socket error, nbyte=-1, nresult=-1
// if the other side has disconnected in either block mode or nonblock mode, nbytes=0, nresult=-1
void SocketRecv(HSocket hs, char *ptr, int nbytes, transresult_t &rt)
{
rt.nbytes = 0;
rt.nresult = 0;
if(!ptr|| nbytes<1) return;
rt.nbytes = recv(hs, ptr, nbytes, BLOCKREADWRITE);
if(rt.nbytes>0)
{
return;
}
else if(rt.nbytes==0)
{
rt.nresult=-1;
}
else
{
rt.nresult = GetLastSocketError();
rt.nresult = ETRYAGAIN(rt.nresult)? 1:-1;
}
}
//
// if timeout occurs, nbytes=-1, nresult=1
// if socket error, nbyte=-1, nresult=-1
// if the other side has disconnected in either block mode or nonblock mode, nbytes=0, nresult=-1
// otherwise nbytes= the count of bytes sent , nresult=0
void SocketSend(HSocket hs, const char *ptr, int nbytes, transresult_t &rt)
{
rt.nbytes = 0;
rt.nresult = 0;
if(!ptr|| nbytes<1) return;
//Linux: flag can be MSG_DONTWAIT, MSG_WAITALL, 使用MSG_WAITALL的时候, socket 必须是处于阻塞模式下，否则WAITALL不能起作用
rt.nbytes = send(hs, ptr, nbytes, BLOCKREADWRITE|SENDNOSIGNAL);
if(rt.nbytes>0)
{
rt.nresult = (rt.nbytes == nbytes)?0:1;
}
else if(rt.nbytes==0)
{
rt.nresult=-1;
}
else
{
rt.nresult = GetLastSocketError();
rt.nresult = ETRYAGAIN(rt.nresult)? 1:-1;
}
}
