private static Stream GetNamedPipeStream(MySqlConnectionStringBuilder settings)
{
#if NETSTANDARD1_6
NamedPipeClientStream pipeStream = new NamedPipeClientStream(settings.Server, settings.PipeName, PipeDirection.InOut);
pipeStream.Connect((int)settings.ConnectionTimeout * 1000);
return(pipeStream);
#else
Stream stream = NamedPipeStream.Create(settings.PipeName, settings.Server, settings.ConnectionTimeout);
return(stream);
#endif
}
private Stream GetStreamFromHost(string pipeName, string hostName, uint timeout)
{
Stream stream = null;
if (pipeName != null && pipeName.Length != 0)
{
#if !CF
stream = NamedPipeStream.Create(pipeName, hostName, timeout);
#endif
}
else
{
IPHostEntry ipHE = GetHostEntry(hostName);
foreach (IPAddress address in ipHE.AddressList)
{
if (address.AddressFamily == AddressFamily.InterNetworkV6 && !this.driverVersion.isAtLeast(5, 5, 3))
{
continue;
}
try
{
stream = CreateSocketStream(address, false);
if (stream != null)
{
break;
}
}
catch (Exception ex)
{
SocketException socketException = ex as SocketException;
// if the exception is a ConnectionRefused then we eat it as we may have other address
// to attempt
if (socketException == null)
{
throw;
}
#if !CF
if (socketException.SocketErrorCode != SocketError.ConnectionRefused)
{
throw;
}
#endif
}
}
}
return(stream);
}
private static Stream GetNamedPipeStream(MySqlConnectionStringBuilder settings)
{
Stream stream = NamedPipeStream.Create(settings.PipeName, settings.Server, settings.ConnectionTimeout);
return(stream);
}
public Stream GetStream(uint timeout)
{
timeOut = timeout;
if (hostList.StartsWith("/", StringComparison.OrdinalIgnoreCase))
{
return(CreateSocketStream(null, true));
}
string[] dnsHosts = hostList.Split('&');
Random random = new Random((int)DateTime.Now.Ticks);
int index = random.Next(dnsHosts.Length);
int pos = 0;
bool usePipe = (pipeName != null && pipeName.Length != 0);
Stream stream = null;
while (pos < dnsHosts.Length)
{
try
{
if (usePipe)
{
#if !CF
stream = NamedPipeStream.Create(pipeName, dnsHosts[index], timeout);
#endif
}
else
{
IPHostEntry ipHE = GetHostEntry(dnsHosts[index]);
foreach (IPAddress address in ipHE.AddressList)
{
// MySQL doesn't currently support IPv6 addresses
if (address.AddressFamily == AddressFamily.InterNetworkV6)
{
continue;
}
stream = CreateSocketStream(address, false);
if (stream != null)
{
break;
}
}
}
if (stream != null)
{
break;
}
index++;
if (index == dnsHosts.Length)
{
index = 0;
}
pos++;
}
catch (Exception)
{
// if on last host then throw
if (pos >= dnsHosts.Length - 1)
{
throw;
}
// else continue
}
}
return(stream);
}
