// creates a physical connection
internal SNIHandle(
SNINativeMethodWrapper.ConsumerInfo myInfo,
string serverName,
byte[] spnBuffer,
bool ignoreSniOpenTimeout,
int timeout,
out byte[] instanceName,
bool flushCache,
bool fSync,
bool fParallel,
TransparentNetworkResolutionState transparentNetworkResolutionState,
int totalTimeout)
: base(IntPtr.Zero, true)
{
RuntimeHelpers.PrepareConstrainedRegions();
try {} finally {
_fSync = fSync;
instanceName = new byte[256]; // Size as specified by netlibs.
if (ignoreSniOpenTimeout)
{
//
timeout = Timeout.Infinite; // -1 == native SNIOPEN_TIMEOUT_VALUE / INFINITE
}
int transparentNetworkResolutionStateNo = (int)transparentNetworkResolutionState;
_status = SNINativeMethodWrapper.SNIOpenSyncEx(myInfo, serverName, ref base.handle,
spnBuffer, instanceName, flushCache, fSync, timeout, fParallel, transparentNetworkResolutionStateNo, totalTimeout,
ADP.IsAzureSqlServerEndpoint(serverName));
}
}
// creates a physical connection
internal SNIHandle(
SNINativeMethodWrapper.ConsumerInfo myInfo,
string serverName,
byte[] spnBuffer,
bool ignoreSniOpenTimeout,
int timeout,
out byte[] instanceName,
bool flushCache,
bool fSync,
bool fParallel,
TransparentNetworkResolutionState transparentNetworkResolutionState,
int totalTimeout)
: base(IntPtr.Zero, true)
{
RuntimeHelpers.PrepareConstrainedRegions();
try
{ }
finally
{
_fSync = fSync;
instanceName = new byte[256]; // Size as specified by netlibs.
if (ignoreSniOpenTimeout)
{
// UNDONE: ITEM12001110 (DB Mirroring Reconnect) Old behavior of not truly honoring timeout presevered
// for non-failover scenarios to avoid breaking changes as part of a QFE. Consider fixing timeout
// handling in next full release and removing ignoreSniOpenTimeout parameter.
timeout = Timeout.Infinite; // -1 == native SNIOPEN_TIMEOUT_VALUE / INFINITE
}
int transparentNetworkResolutionStateNo = (int)transparentNetworkResolutionState;
_status = SNINativeMethodWrapper.SNIOpenSyncEx(myInfo, serverName, ref base.handle,
spnBuffer, instanceName, flushCache, fSync, timeout, fParallel, transparentNetworkResolutionStateNo, totalTimeout,
ADP.IsAzureSqlServerEndpoint(serverName));
}
}
// creates a physical connection
internal SNIHandle(
SNINativeMethodWrapper.ConsumerInfo myInfo,
string serverName,
byte[] spnBuffer,
bool ignoreSniOpenTimeout,
int timeout,
out byte[] instanceName,
bool flushCache,
bool fSync,
bool fParallel,
TransparentNetworkResolutionState transparentNetworkResolutionState,
int totalTimeout)
: base(IntPtr.Zero, true) {
RuntimeHelpers.PrepareConstrainedRegions();
try {} finally {
_fSync = fSync;
instanceName = new byte[256]; // Size as specified by netlibs.
if (ignoreSniOpenTimeout) {
//
timeout = Timeout.Infinite; // -1 == native SNIOPEN_TIMEOUT_VALUE / INFINITE
}
int transparentNetworkResolutionStateNo = (int)transparentNetworkResolutionState;
_status = SNINativeMethodWrapper.SNIOpenSyncEx(myInfo, serverName, ref base.handle,
spnBuffer, instanceName, flushCache, fSync, timeout, fParallel, transparentNetworkResolutionStateNo, totalTimeout);
}
}
internal void CreatePhysicalSNIHandle(string serverName, bool ignoreSniOpenTimeout, long timerExpire, out byte[] instanceName, byte[] spnBuffer, bool flushCache, bool async, bool fParallel, TransparentNetworkResolutionState transparentNetworkResolutionState, int totalTimeout)
{
SNINativeMethodWrapper.ConsumerInfo myInfo = CreateConsumerInfo(async);
// Translate to SNI timeout values (Int32 milliseconds)
long timeout;
if (Int64.MaxValue == timerExpire) {
timeout = Int32.MaxValue;
}
else {
timeout = ADP.TimerRemainingMilliseconds(timerExpire);
if (timeout > Int32.MaxValue) {
timeout = Int32.MaxValue;
}
else if (0 > timeout) {
timeout = 0;
}
}
_sessionHandle = new SNIHandle(myInfo, serverName, spnBuffer, ignoreSniOpenTimeout, checked((int)timeout), out instanceName, flushCache, !async, fParallel, transparentNetworkResolutionState, totalTimeout);
}
