/// <summary> Sends a SIF infrastructure message and returns the response.</summary>
/// <remarks>
/// The message content should consist of a complete <SIF_Message> element.
/// This method sends whatever content is passed to it without any checking
/// or validation of any kind.
/// </remarks>
/// <param name="msg">The message content</param>
/// <returns> The response from the ZIS (expected to be a <SIF_Ack> message)
/// </returns>
/// <exception cref="AdkMessagingException"> is thrown if there is an error sending
/// the message to the Zone Integration Server
/// </exception>
public IMessageInputStream Send(IMessageOutputStream msg)
{
try {
return(TrySend(msg));
}
catch (WebException webEx) {
if (webEx.Status == WebExceptionStatus.ConnectionClosed)
{
// Try one more time, the underlying keep-alive connection must have
// been closed by the ZIS. Trying again will start with a fresh,
// new connection
try {
return(TrySend(msg));
}
catch (AdkException) {
throw;
}
catch (Exception ex) {
throw new AdkMessagingException
("HttpProtocolHandler: Unexpected error sending message retry: " + ex,
fZone);
}
}
else
{
// This code should never be hit because TrySend() should never emit this exception
// Leaving the code here for defensive purposes
throw new AdkMessagingException
("HttpProtocolHandler: Unexpected error sending message: " + webEx, fZone);
}
}
}
//public string Send(string msg)
//{
// lock (this)
// {
// fMessages.AddLast(msg);
// }
// return makeAck();
//}
public IMessageInputStream Send( IMessageOutputStream msg )
{
lock ( this )
{
try
{
MemoryStream stream = new MemoryStream();
msg.CopyTo( stream );
stream.Seek( 0, SeekOrigin.Begin );
SifParser parser = SifParser.NewInstance();
SifMessagePayload smp = (SifMessagePayload) parser.Parse( stream, fZone );
fMessages.Add( smp );
parser = null;
SIF_Ack ack = smp.ackStatus( 0 );
SIF_Header hdr = ack.Header;
hdr.SIF_Timestamp = DateTime.Now;
hdr.SIF_MsgId = Adk.MakeGuid();
hdr.SIF_SourceId = fZone.Agent.Id;
StringWriter str = new StringWriter();
SifWriter writer = new SifWriter( str );
writer.Write( ack );
writer.Flush();
writer.Close();
writer = null;
return new MessageStreamImpl( str.ToString() );
}
catch( Exception ex )
{
// Possible error parsing. Write the message to console out
Console.Out.WriteLine(msg.Decode());
throw new AdkMessagingException(ex.Message, fZone, ex);
}
}
}
//public string Send(string msg)
//{
// lock (this)
// {
// fMessages.AddLast(msg);
// }
// return makeAck();
//}
public IMessageInputStream Send( IMessageOutputStream msg )
{
lock ( this )
{
try
{
MemoryStream stream = new MemoryStream();
msg.CopyTo( stream );
stream.Seek( 0, SeekOrigin.Begin );
SifParser parser = SifParser.NewInstance();
SifMessagePayload smp = (SifMessagePayload) parser.Parse( stream, fZone );
fMessages.Add( smp );
parser = null;
SIF_Ack ack = smp.ackStatus( 0 );
SIF_Header hdr = ack.Header;
hdr.SIF_Timestamp = DateTime.Now;
hdr.SIF_MsgId = Adk.MakeGuid();
hdr.SIF_SourceId = fZone.Agent.Id;
StringWriter str = new StringWriter();
SifWriter writer = new SifWriter( str );
writer.Write( ack );
writer.Flush();
writer.Close();
writer = null;
return new MessageStreamImpl( str.ToString() );
}
catch( Exception ex )
{
// Possible error parsing. Write the message to console out
Console.Out.WriteLine(msg.Decode());
throw new AdkMessagingException(ex.Message, fZone, ex);
}
}
}
private IMessageInputStream TrySend(IMessageOutputStream msg)
{
MessageStreamImpl returnStream;
Stream reqStream;
HttpWebRequest conn = GetConnection(fZoneUrl);
conn.ContentLength = msg.Length;
try {
reqStream = conn.GetRequestStream();
}
catch (WebException webEx) {
if (webEx.Status == WebExceptionStatus.ConnectionClosed)
{
// This could be a keep-alive connection that was closed unexpectedly
// rethrow so that retry handling can take affect
throw;
}
else
{
throw new AdkTransportException
("Could not establish a connection to the ZIS (" + fZoneUrl.AbsoluteUri +
"): " + webEx, fZone, webEx);
}
}
catch (Exception thr) {
throw new AdkTransportException
("Could not establish a connection to the ZIS (" + fZoneUrl.AbsoluteUri + "): " +
thr, fZone, thr);
}
try {
if ((Adk.Debug & AdkDebugFlags.Transport) != 0)
{
fZone.Log.Debug("Sending message (" + msg.Length + " bytes)");
}
if ((Adk.Debug & AdkDebugFlags.Message_Content) != 0)
{
fZone.Log.Debug(msg.Decode());
}
try {
msg.CopyTo(reqStream);
reqStream.Flush();
reqStream.Close();
}
catch (Exception thr) {
throw new AdkMessagingException
("HttpProtocolHandler: Unexpected error sending message: " + thr, fZone);
}
try {
using (WebResponse response = conn.GetResponse()) {
if ((Adk.Debug & AdkDebugFlags.Transport) != 0)
{
fZone.Log.Debug
("Expecting reply (" + response.ContentLength + " bytes)");
}
returnStream = new MessageStreamImpl(response.GetResponseStream());
response.Close();
if ((Adk.Debug & AdkDebugFlags.Transport) != 0)
{
fZone.Log.Debug("Received reply (" + returnStream.Length + " bytes)");
}
if ((Adk.Debug & AdkDebugFlags.Message_Content) != 0)
{
fZone.Log.Debug(returnStream.Decode());
}
}
}
catch (Exception thr) {
throw new AdkTransportException
("An unexpected error occurred while receiving data from the ZIS: " + thr,
fZone);
}
}
catch (AdkException) {
// rethrow anything that's already wrapped in an AdkException
throw;
}
catch (Exception thr) {
throw new AdkMessagingException
("HttpProtocolHandler: Error receiving response to sent message: " + thr, fZone);
}
return(returnStream);
}
private IMessageInputStream TrySend( IMessageOutputStream msg )
{
MessageStreamImpl returnStream;
Stream reqStream;
HttpWebRequest conn = GetConnection( fZoneUrl );
conn.ContentLength = msg.Length;
try {
reqStream = conn.GetRequestStream();
}
catch ( WebException webEx ) {
if ( webEx.Status == WebExceptionStatus.ConnectionClosed ) {
// This could be a keep-alive connection that was closed unexpectedly
// rethrow so that retry handling can take affect
throw;
}
else {
throw new AdkTransportException
( "Could not establish a connection to the ZIS (" + fZoneUrl.AbsoluteUri +
"): " + webEx, fZone, webEx );
}
}
catch ( Exception thr ) {
throw new AdkTransportException
( "Could not establish a connection to the ZIS (" + fZoneUrl.AbsoluteUri + "): " +
thr, fZone, thr );
}
try {
if ( (Adk.Debug & AdkDebugFlags.Transport) != 0 ) {
fZone.Log.Debug( "Sending message (" + msg.Length + " bytes)" );
}
if ( (Adk.Debug & AdkDebugFlags.Message_Content) != 0 ) {
fZone.Log.Debug( msg.Decode() );
}
try {
msg.CopyTo( reqStream );
reqStream.Flush();
reqStream.Close();
}
catch ( Exception thr ) {
throw new AdkMessagingException
( "HttpProtocolHandler: Unexpected error sending message: " + thr, fZone );
}
try {
using ( WebResponse response = conn.GetResponse() ) {
if ( (Adk.Debug & AdkDebugFlags.Transport) != 0 ) {
fZone.Log.Debug
( "Expecting reply (" + response.ContentLength + " bytes)" );
}
returnStream = new MessageStreamImpl( response.GetResponseStream() );
response.Close();
if ( (Adk.Debug & AdkDebugFlags.Transport) != 0 ) {
fZone.Log.Debug( "Received reply (" + returnStream.Length + " bytes)" );
}
if ( (Adk.Debug & AdkDebugFlags.Message_Content) != 0 ) {
fZone.Log.Debug( returnStream.Decode() );
}
}
}
catch ( Exception thr ) {
throw new AdkTransportException
( "An unexpected error occurred while receiving data from the ZIS: " + thr,
fZone );
}
}
catch ( AdkException ) {
// rethrow anything that's already wrapped in an AdkException
throw;
}
catch ( Exception thr ) {
throw new AdkMessagingException
( "HttpProtocolHandler: Error receiving response to sent message: " + thr, fZone );
}
return returnStream;
}
/// <summary> Sends a SIF infrastructure message and returns the response.</summary>
/// <remarks>
/// The message content should consist of a complete <SIF_Message> element.
/// This method sends whatever content is passed to it without any checking
/// or validation of any kind.
/// </remarks>
/// <param name="msg">The message content</param>
/// <returns> The response from the ZIS (expected to be a <SIF_Ack> message)
/// </returns>
/// <exception cref="AdkMessagingException"> is thrown if there is an error sending
/// the message to the Zone Integration Server
/// </exception>
public IMessageInputStream Send( IMessageOutputStream msg )
{
try {
return TrySend( msg );
}
catch ( WebException webEx ) {
if ( webEx.Status == WebExceptionStatus.ConnectionClosed ) {
// Try one more time, the underlying keep-alive connection must have
// been closed by the ZIS. Trying again will start with a fresh,
// new connection
try {
return TrySend( msg );
}
catch ( AdkException ) {
throw;
}
catch ( Exception ex ) {
throw new AdkMessagingException
( "HttpProtocolHandler: Unexpected error sending message retry: " + ex,
fZone );
}
}
else {
// This code should never be hit because TrySend() should never emit this exception
// Leaving the code here for defensive purposes
throw new AdkMessagingException
( "HttpProtocolHandler: Unexpected error sending message: " + webEx, fZone );
}
}
}
