public virtual byte[] ProbeMatch(WsWsaHeader header, XmlReader reader)
{
// Performance debugging
DebugTiming timeDebuger = new DebugTiming();
long startTime = timeDebuger.ResetStartTime("");
// Build ProbeMatch
MemoryStream soapStream = new MemoryStream();
XmlWriter xmlWriter = XmlWriter.Create(soapStream);
// If a Host exist write the Host namespace
WsXmlNamespaces additionalPrefixes = null;
if (Device.Host != null)
{
additionalPrefixes = new WsXmlNamespaces();
additionalPrefixes.Add(Device.Host.ServiceNamespace);
}
WsWsaHeader matchHeader = new WsWsaHeader(
WsWellKnownUri.WsdNamespaceUri + "/ProbeMatches", // Action
header.MessageID, // RelatesTo
WsWellKnownUri.WsaAnonymousUri, // To
null, null, null); // ReplyTo, From, Any
WsSoapMessageWriter.WriteSoapMessageStart(xmlWriter,
WsSoapMessageWriter.Prefixes.Wsd | WsSoapMessageWriter.Prefixes.Wsdp, // Prefix
additionalPrefixes, // Additional Prefixes
matchHeader, // Header
new WsSoapMessageWriter.AppSequence(Device.AppSequence, Device.SequenceID, Device.MessageID)); // AppSequence
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Header Took");
// write body
xmlWriter.WriteStartElement("wsd", "ProbeMatches", WsWellKnownUri.WsdNamespaceUri);
xmlWriter.WriteStartElement("wsd", "ProbeMatch", WsWellKnownUri.WsdNamespaceUri);
xmlWriter.WriteStartElement("wsa", "EndpointReference", WsWellKnownUri.WsaNamespaceUri_2005_08);
xmlWriter.WriteStartElement("wsa", "Address", WsWellKnownUri.WsaNamespaceUri_2005_08);
xmlWriter.WriteString(Device.EndpointAddress);
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
// Write hosted service types
xmlWriter.WriteStartElement("wsd", "Types", WsWellKnownUri.WsdNamespaceUri);
WriteDeviceServiceTypes(xmlWriter);
xmlWriter.WriteEndElement(); // End Types
xmlWriter.WriteStartElement("wsd", "XAddrs", WsWellKnownUri.WsdNamespaceUri);
xmlWriter.WriteString(Device.TransportAddress);
xmlWriter.WriteEndElement();
xmlWriter.WriteStartElement("wsd", "MetadataVersion", WsWellKnownUri.WsdNamespaceUri);
xmlWriter.WriteString(Device.MetadataVersion.ToString());
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
// Create return buffer and close writer
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Body Took");
WsSoapMessageWriter.WriteSoapMessageEnd(xmlWriter);
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***ProbeMatch Took");
// Flush and close writer. Return stream buffer
xmlWriter.Flush();
xmlWriter.Close();
// Delay probe match as per Ws-Discovery specification
Thread.Sleep(new Random().Next(Device.ProbeMatchDelay));
return soapStream.ToArray();
}
/// <summary>
/// Builds a probe request message based on the filters parameter.
/// </summary>
/// <param name="serviceAddress">
/// A string containing the target service address.
/// For example: urn:uuid:3cb0d1ba-cc3a-46ce-b416-212ac2419b20
/// </param>
/// <param name="filters">
/// A DpwsServiceTypes object containing a collection of types a service must support to signal a match.
/// Null = any type.
/// </param>
/// <param name="messageID">
/// A string used to return the messageID assigned to this message.
/// </param>
/// <returns>A byte array containing the probe message or null if an error occures.</returns>
private WsMessage BuildProbeRequest(string serviceAddress, DpwsServiceTypes filters, out String messageID)
{
// Performance debugging
DebugTiming timeDebuger = new DebugTiming();
long startTime = timeDebuger.ResetStartTime("");
WsMessage msg = null;
// Build Probe request
using(XmlMemoryWriter xmlWriter = XmlMemoryWriter.Create())
{
WsWsaHeader header = new WsWsaHeader(
m_version.DiscoveryNamespace + "/Probe", // Action
null, // RelatesTo
serviceAddress, // To
m_version.AnonymousUri, null, null); // ReplyTo, From, Any
header.MustUnderstand = true;
// If filters are supplied, write filter namespaces if prefixed. Build filter list for use later
WsXmlNamespaces namespaces = new WsXmlNamespaces();
// Prefix hack for now:
int i = 0;
string prefix;
string filterList = "";
bool spaceFlag = false;
if (filters != null)
{
int count = filters.Count;
for (int j = 0; j < count; j++)
{
DpwsServiceType serviceType = filters[j];
prefix = namespaces.LookupPrefix(serviceType.NamespaceUri);
if (prefix == null)
{
prefix = "dp" + (i++);
namespaces.Add(new WsXmlNamespace(prefix, serviceType.NamespaceUri));
}
filterList = filterList + ((spaceFlag == true) ? " " : "") + prefix + ":" + serviceType.TypeName;
spaceFlag = true;
}
}
msg = new WsMessage(header, null, WsPrefix.Wsd, namespaces, null);
WsSoapMessageWriter smw = new WsSoapMessageWriter(m_version);
messageID = smw.WriteSoapMessageStart(xmlWriter, msg);
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Header Took");
// write body
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "Probe", null);
// If filter is supplied add filter types tag else write blank string to probe body, force an empty tag
if (filterList.Length != 0)
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "Types", null);
xmlWriter.WriteString(filterList);
xmlWriter.WriteEndElement(); // End Filter
}
else
xmlWriter.WriteString("");
xmlWriter.WriteEndElement(); // End Probe
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Body Took");
smw.WriteSoapMessageEnd(xmlWriter);
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***Probe Message Build Took");
// return the probe message
msg.Body = xmlWriter.ToArray();
}
return msg;
}
internal WsMessage BuildHelloMessage(string endpointAddress, WsWsaHeader header, XmlReader reader)
{
using(XmlMemoryWriter xmlWriter = XmlMemoryWriter.Create())
{
WsXmlNamespaces additionalPrefixes = null;
// If a Host exist write the Host namespace
if (Device.Host != null)
{
additionalPrefixes = new WsXmlNamespaces();
additionalPrefixes.Add(Device.Host.ServiceNamespace);
}
WsWsaHeader helloHeader = new WsWsaHeader(
m_version.DiscoveryNamespace + "/Hello", // Action
null, // RelatesTo
endpointAddress, // To
null, null, null); // ReplyTo, From, Any
WsMessage msg = new WsMessage(helloHeader, null, WsPrefix.Wsd | WsPrefix.Wsdp, additionalPrefixes,
new WsAppSequence(Device.AppSequence, Device.SequenceID, Device.MessageID));
WsSoapMessageWriter smw = new WsSoapMessageWriter(m_version);
smw.WriteSoapMessageStart(xmlWriter, msg);
// write body
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "Hello", null);
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsa, "EndpointReference", null);
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsa, "Address", null);
xmlWriter.WriteString(Device.EndpointAddress);
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
// Write hosted service types
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "Types", null);
WriteDeviceServiceTypes(xmlWriter, false);
xmlWriter.WriteEndElement(); // End Types
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "XAddrs", null);
xmlWriter.WriteString(Device.TransportAddress);
xmlWriter.WriteEndElement();
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "MetadataVersion", null);
xmlWriter.WriteString(Device.MetadataVersion.ToString());
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
// Flush and close writer. Return stream buffer
smw.WriteSoapMessageEnd(xmlWriter);
msg.Body = xmlWriter.ToArray();
return msg;
}
}
public virtual byte[] ResolveMatch(WsWsaHeader header, XmlReader reader)
{
reader.ReadStartElement("Resolve", WsWellKnownUri.WsdNamespaceUri);
if (reader.IsStartElement("EndpointReference", WsWellKnownUri.WsaNamespaceUri_2005_08) == false)
{
return null;
}
WsWsaEndpointRef epRef = new WsWsaEndpointRef(reader);
// If the destination endpoint is ours send a resolve match else return null
if (Device.EndpointAddress != epRef.Address.AbsoluteUri)
return null;
// Build ResolveMatch
MemoryStream soapStream = new MemoryStream();
XmlWriter xmlWriter = XmlWriter.Create(soapStream);
// If a Host exist write the Host namespace
WsXmlNamespaces additionalPrefixes = null;
if (Device.Host != null)
{
additionalPrefixes = new WsXmlNamespaces();
additionalPrefixes.Add(Device.Host.ServiceNamespace);
}
WsWsaHeader matchHeader = new WsWsaHeader(
WsWellKnownUri.WsdNamespaceUri + "/ResolveMatches", // Action
header.MessageID, // RelatesTo
WsWellKnownUri.WsaAnonymousUri, // To
null, null, null); // ReplyTo, From, Any
WsSoapMessageWriter.WriteSoapMessageStart(xmlWriter,
WsSoapMessageWriter.Prefixes.Wsd | WsSoapMessageWriter.Prefixes.Wsdp, // Prefix
additionalPrefixes, // Additional Prefixes
matchHeader, // Header
new WsSoapMessageWriter.AppSequence(Device.AppSequence, Device.SequenceID, Device.MessageID)); // AppSequence
// write body
xmlWriter.WriteStartElement("wsd", "ResolveMatches", WsWellKnownUri.WsdNamespaceUri);
xmlWriter.WriteStartElement("wsd", "ResolveMatch", WsWellKnownUri.WsdNamespaceUri);
xmlWriter.WriteStartElement("wsa", "EndpointReference", WsWellKnownUri.WsaNamespaceUri_2005_08);
xmlWriter.WriteStartElement("wsa", "Address", WsWellKnownUri.WsaNamespaceUri_2005_08);
xmlWriter.WriteString(Device.EndpointAddress);
xmlWriter.WriteEndElement(); // End Address
xmlWriter.WriteEndElement(); // End EndpointReference
// Write hosted service types
xmlWriter.WriteStartElement("wsd", "Types", WsWellKnownUri.WsdNamespaceUri);
WriteDeviceServiceTypes(xmlWriter);
xmlWriter.WriteEndElement(); // End Types
xmlWriter.WriteStartElement("wsd", "XAddrs", WsWellKnownUri.WsdNamespaceUri);
xmlWriter.WriteString(Device.TransportAddress);
xmlWriter.WriteEndElement(); // End XAddrs
xmlWriter.WriteStartElement("wsd", "MetadataVersion", WsWellKnownUri.WsdNamespaceUri);
xmlWriter.WriteString(Device.MetadataVersion.ToString());
xmlWriter.WriteEndElement(); // End MetadataVersion
xmlWriter.WriteEndElement(); // End ResolveMatch
xmlWriter.WriteEndElement(); // End ResolveMatches
WsSoapMessageWriter.WriteSoapMessageEnd(xmlWriter);
// Flush and close writer. Return stream buffer
xmlWriter.Flush();
xmlWriter.Close();
return soapStream.ToArray();
}
/// <summary>
/// Use to subscribe to a devices, hosted service event sources.
/// </summary>
/// <param name="subscriptionRequest">
/// A DpwsSubscriptionRequest object containing the address of the service hosting the desired event,
/// the address where the event is sent, an optional address where subscription end messages are sent,
/// A subscription expiration (in duration format) and an optional user defined identifier.
/// </param>
/// <returns>
/// A DpwsEventSubscription containing the the subscription managers address, the time when the subscription
/// expires (duration) and optional reference parameters and properties. Per spec the
/// sub mananger may assign a different duration value than that specified in the request.
/// </returns>
/// <exception cref="ArgumentNullException">If required subscription parameters are not set.</exception>
public DpwsEventSubscription Subscribe(DpwsSubscribeRequest subscriptionRequest)
{
if (subscriptionRequest.SubscriptionType == null)
throw new ArgumentNullException("Subscribe - SubscriptionType must not be null");
if (subscriptionRequest.SubscriptionType.TypeName == null)
throw new ArgumentNullException("Subscribe - SubscriptionType.TypeName must not be null");
if (subscriptionRequest.SubscriptionType.NamespaceUri == null)
throw new ArgumentNullException("Subscribe - SubscriptionType.NamespaceUri must not be null");
if (subscriptionRequest.EndpointAddress == null)
throw new ArgumentNullException("Subscribe - EndpointAddress property must not be null.");
if (subscriptionRequest.NotifyTo == null)
throw new ArgumentNullException("Subscribe - NotifyTo must not be null.");
if (subscriptionRequest.NotifyTo.Address == null)
throw new ArgumentNullException("Subscribe - NotifyTo.Address must not be null.");
// Convert the address string to a Uri
Uri serviceUri = null;
try
{
serviceUri = subscriptionRequest.EndpointAddress;
if (serviceUri.Scheme != "http")
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Invalid endpoint address. Must be a Uri. Http Uri schemes only.");
System.Ext.Console.Write("");
return null;
}
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write(e.Message);
System.Ext.Console.Write("");
return null;
}
// Performance debugging
DebugTiming timeDebuger = new DebugTiming();
long startTime = timeDebuger.ResetStartTime("");
// Build Subscribe Request
MemoryStream soapStream = new MemoryStream();
XmlWriter xmlWriter = XmlWriter.Create(soapStream);
WsWsaHeader header = new WsWsaHeader(
WsWellKnownUri.WseNamespaceUri + "/Subscribe", // Action
null, // RelatesTo
serviceUri.AbsoluteUri, // To
WsWellKnownUri.WsaAnonymousUri, // ReplyTo
null, null); // From, Any
WsXmlNamespaces additionalPrefixes = new WsXmlNamespaces();
additionalPrefixes.Add(new WsXmlNamespace("myPrefix", subscriptionRequest.SubscriptionType.NamespaceUri));
String messageID = WsSoapMessageWriter.WriteSoapMessageStart(xmlWriter,
WsSoapMessageWriter.Prefixes.Wsd | WsSoapMessageWriter.Prefixes.Wse,
additionalPrefixes, header, null);
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Header Took");
// write body
xmlWriter.WriteStartElement("wse", "Subscribe", null);
// If EndTo is set write it
if (subscriptionRequest.EndTo != null)
WriteEndpointRef(ref xmlWriter, subscriptionRequest.EndTo, "EndTo");
// Add the delivery element and NotifyTo endpoint
xmlWriter.WriteStartElement("wse", "Delivery", null);
xmlWriter.WriteAttributeString("Mode", "http://schemas.xmlsoap.org/ws/2004/08/eventing/DeliveryModes/Push");
// Writer the notify to endpoint
WriteEndpointRef(ref xmlWriter, subscriptionRequest.NotifyTo, "NotifyTo");
xmlWriter.WriteEndElement(); // End Delivery
// Write Expiration time
if (subscriptionRequest.Expires != null)
{
xmlWriter.WriteStartElement("wse", "Expires", null);
xmlWriter.WriteString(subscriptionRequest.Expires.DurationString);
xmlWriter.WriteEndElement(); // End Expires
}
// Write Filter element specifying the event to subscribe to.
xmlWriter.WriteStartElement("wse", "Filter", null);
xmlWriter.WriteAttributeString("Dialect", "http://schemas.xmlsoap.org/ws/2006/02/devprof/Action");
xmlWriter.WriteString(subscriptionRequest.SubscriptionType.NamespaceUri + "/" + subscriptionRequest.SubscriptionType.TypeName);
xmlWriter.WriteEndElement(); // End Filter
xmlWriter.WriteEndElement(); // End Subscribe
WsSoapMessageWriter.WriteSoapMessageEnd(xmlWriter);
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Body Took");
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***Subscribe Message Build Took");
// Flush and close writer
xmlWriter.Flush();
xmlWriter.Close();
// Create an Http client and send Subscribe request
WsHttpClient httpClient = new WsHttpClient();
byte[] subscribeResponse = null;
try
{
subscribeResponse = httpClient.SendRequest(soapStream.ToArray(), subscriptionRequest.EndpointAddress.AbsoluteUri, false, false);
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Subscribe failed. " + e.Message);
return null;
}
// If a subscribe response is received process it and return expiration time the subscription manager
// actually assigned.
// If a parsing fault is received print exception and go on.
DpwsEventSubscription response = null;
if (subscribeResponse == null)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Subscribe response is null.");
return null;
}
else
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Response From: " + subscriptionRequest.EndpointAddress.Host);
System.Ext.Console.Write(new String(System.Text.Encoding.UTF8.GetChars(subscribeResponse)));
try
{
// It is ok for the service to return a 202 and a 0 length response
// if thi is the case just return null
if (subscribeResponse.Length == 0)
return null;
response = ProcessSubscribeResponse(subscribeResponse, messageID);
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Subscription response parsing failed.");
System.Ext.Console.Write(e.Message);
}
}
return response;
}
/// <summary>
/// Use to subscribe to a devices, hosted service event sources.
/// </summary>
/// <param name="subscriptionRequest">
/// A DpwsSubscriptionRequest object containing the address of the service hosting the desired event,
/// the address where the event is sent, an optional address where subscription end messages are sent,
/// A subscription expiration (in duration format) and an optional user defined identifier.
/// </param>
/// <returns>
/// A DpwsEventSubscription containing the the subscription managers address, the time when the subscription
/// expires (duration) and optional reference parameters and properties. Per spec the
/// sub mananger may assign a different duration value than that specified in the request.
/// </returns>
/// <exception cref="ArgumentNullException">If required subscription parameters are not set.</exception>
public DpwsEventSubscription Subscribe(DpwsSubscribeRequest subscriptionRequest)
{
if ((subscriptionRequest.SubscriptionType == null) ||
(subscriptionRequest.SubscriptionType.TypeName == null) ||
(subscriptionRequest.SubscriptionType.NamespaceUri == null) ||
(subscriptionRequest.EndpointAddress == null) ||
(subscriptionRequest.NotifyTo == null) ||
(subscriptionRequest.NotifyTo.Address == null))
{
throw new ArgumentNullException();
}
// Convert the address string to a Uri
Uri serviceUri = null;
try
{
serviceUri = subscriptionRequest.EndpointAddress;
if (serviceUri.Scheme != "http")
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Invalid endpoint address. Must be a Uri. Http Uri schemes only.");
System.Ext.Console.Write("");
return null;
}
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write(e.Message);
System.Ext.Console.Write("");
return null;
}
// Performance debugging
DebugTiming timeDebuger = new DebugTiming();
long startTime = timeDebuger.ResetStartTime("");
WsMessage subscribeResponse = null;
// Build Subscribe Request
using(XmlMemoryWriter xmlWriter = XmlMemoryWriter.Create())
{
WsWsaHeader header = new WsWsaHeader(
m_version.EventingNamespace + "/Subscribe", // Action
null, // RelatesTo
serviceUri.AbsoluteUri, // To
m_version.AnonymousUri, // ReplyTo
null, null); // From, Any
WsXmlNamespaces additionalPrefixes = new WsXmlNamespaces();
additionalPrefixes.Add(new WsXmlNamespace("myPrefix", subscriptionRequest.SubscriptionType.NamespaceUri));
WsMessage msg = new WsMessage(header, null, WsPrefix.Wsd | WsPrefix.Wse, additionalPrefixes, null);
WsSoapMessageWriter smw = new WsSoapMessageWriter(m_version);
String messageID = smw.WriteSoapMessageStart(xmlWriter, msg);
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Header Took");
// write body
xmlWriter.WriteStartElement(WsNamespacePrefix.Wse, "Subscribe", null);
// If EndTo is set write it
if (subscriptionRequest.EndTo != null)
WriteEndpointRef(xmlWriter, subscriptionRequest.EndTo, "EndTo");
// Add the delivery element and NotifyTo endpoint
xmlWriter.WriteStartElement(WsNamespacePrefix.Wse, "Delivery", null);
xmlWriter.WriteAttributeString("Mode", m_version.EventingNamespace + "/DeliveryModes/Push");
// Writer the notify to endpoint
WriteEndpointRef(xmlWriter, subscriptionRequest.NotifyTo, "NotifyTo");
xmlWriter.WriteEndElement(); // End Delivery
// Write Expiration time
if (subscriptionRequest.Expires != null)
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wse, "Expires", null);
xmlWriter.WriteString(subscriptionRequest.Expires.DurationString);
xmlWriter.WriteEndElement(); // End Expires
}
// Write Filter element specifying the event to subscribe to.
xmlWriter.WriteStartElement(WsNamespacePrefix.Wse, "Filter", null);
xmlWriter.WriteAttributeString("Dialect", m_version.WsdpNamespaceUri + "/Action");
xmlWriter.WriteString(subscriptionRequest.SubscriptionType.NamespaceUri + "/" + subscriptionRequest.SubscriptionType.TypeName);
xmlWriter.WriteEndElement(); // End Filter
xmlWriter.WriteEndElement(); // End Subscribe
smw.WriteSoapMessageEnd(xmlWriter);
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Body Took");
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***Subscribe Message Build Took");
// Create an Http client and send Subscribe request
WsHttpClient httpClient = new WsHttpClient(m_version);
msg.Body = xmlWriter.ToArray();
subscribeResponse = httpClient.SendRequest(msg, subscriptionRequest.EndpointAddress);
// If a subscribe response is received process it and return expiration time the subscription manager
// actually assigned.
// If a parsing fault is received print exception and go on.
DpwsEventSubscription response = null;
if (subscribeResponse == null)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Subscribe response is null.");
return null;
}
else
{
byte[] responseBytes = subscribeResponse.Body as byte[];
// It is ok for the service to return a 202 and a 0 length response
// if thi is the case just return null
if(responseBytes == null || responseBytes.Length == 0) return null;
System.Ext.Console.Write("");
System.Ext.Console.Write("Response From: " + subscriptionRequest.EndpointAddress.Host);
System.Ext.Console.Write(responseBytes);
try
{
response = ProcessSubscribeResponse(responseBytes, messageID);
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Subscription response parsing failed.");
System.Ext.Console.Write(e.Message);
}
}
return response;
}
}
public virtual WsMessage ProbeMatch(WsMessage probe, DpwsHostedService matchedService)
{
XmlReader reader = probe.Reader;
WsWsaHeader header = probe.Header;
// Performance debugging
DebugTiming timeDebuger = new DebugTiming();
long startTime = timeDebuger.ResetStartTime("");
// Build ProbeMatch
using(XmlMemoryWriter xmlWriter = XmlMemoryWriter.Create())
{
// If a Host exist write the Host namespace
WsXmlNamespaces additionalPrefixes = null;
if (Device.Host != null)
{
additionalPrefixes = new WsXmlNamespaces();
additionalPrefixes.Add(Device.Host.ServiceNamespace);
}
WsWsaHeader matchHeader = new WsWsaHeader(
this.Version.DiscoveryNamespace + "/ProbeMatches", // Action
header.MessageID, // RelatesTo
this.Version.AnonymousUri, // To
null, null, null); // ReplyTo, From, Any
WsMessage msg = new WsMessage(matchHeader, null, WsPrefix.Wsd | WsPrefix.Wsdp, additionalPrefixes,
new WsAppSequence(Device.AppSequence, Device.SequenceID, Device.MessageID));
WsSoapMessageWriter smw = new WsSoapMessageWriter(this.Version);
smw.WriteSoapMessageStart(xmlWriter, msg);
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Header Took");
// write body
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "ProbeMatches", null);
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "ProbeMatch", null);
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsa, "EndpointReference", null);
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsa, "Address", null);
xmlWriter.WriteString(matchedService == null ? Device.EndpointAddress : matchedService.EndpointAddress);
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
// Write hosted service types
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "Types", null);
WriteDeviceServiceTypes(xmlWriter);
xmlWriter.WriteEndElement(); // End Types
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "XAddrs", null);
string transport = Device.TransportAddress;
if(matchedService != null)
{
int idx = transport.LastIndexOf('/');
if(idx != -1)
{
transport = transport.Substring(0, idx + 1);
transport += matchedService.EndpointAddress.Substring(matchedService.EndpointAddress.IndexOf("urn:uuid:") + 9);
}
}
int idx2 = transport.ToLower().IndexOf("localhost");
if(idx2 != -1)
{
transport = transport.Substring(0, idx2) + WsNetworkServices.GetLocalIPV4Address() + transport.Substring(idx2 + 9 /*localhost*/);
}
xmlWriter.WriteString(transport);
xmlWriter.WriteEndElement();
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "MetadataVersion", null);
xmlWriter.WriteString(Device.MetadataVersion.ToString());
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
smw.WriteSoapMessageEnd(xmlWriter);
msg.Body = xmlWriter.ToArray();
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***ProbeMatch Took");
// Delay probe match as per Ws-Discovery specification (2.4 Protocol Assignments)
Thread.Sleep(new Random().Next(Device.ProbeMatchDelay));
// Return stream buffer
return msg;
}
}
public virtual WsMessage ResolveMatch(WsMessage message)
{
XmlReader reader = message.Reader;
WsWsaHeader header = message.Header;
bool match = false;
string epAddr = "";
reader.ReadStartElement("Resolve", this.Version.DiscoveryNamespace);
if(reader.IsStartElement("EndpointReference", this.Version.AddressingNamespace) == false)
{
return null;
}
WsWsaEndpointRef epRef = new WsWsaEndpointRef(reader, this.Version.AddressingNamespace);
epAddr = epRef.Address.AbsoluteUri;
if(Device.EndpointAddress != epAddr)
{
// If the destination endpoint is ours send a resolve match else return null
int servicesCount = Device.HostedServices.Count;
DpwsHostedService hostedService;
for (int i = 0; i < servicesCount; i++)
{
hostedService = (DpwsHostedService)Device.HostedServices[i];
// Skip internal services
if (hostedService.ServiceTypeName == "Internal")
continue;
if (hostedService.EndpointAddress == epAddr)
{
match = true;
break;
}
}
if (!match)
return null;
}
// Build ResolveMatch
using(XmlMemoryWriter xmlWriter = XmlMemoryWriter.Create())
{
// If a Host exist write the Host namespace
WsXmlNamespaces additionalPrefixes = null;
if (Device.Host != null)
{
additionalPrefixes = new WsXmlNamespaces();
additionalPrefixes.Add(Device.Host.ServiceNamespace);
}
WsWsaHeader matchHeader = new WsWsaHeader(
this.Version.DiscoveryNamespace + "/ResolveMatches", // Action
header.MessageID, // RelatesTo
this.Version.AnonymousUri, // To
null, null, null); // ReplyTo, From, Any
WsMessage msg = new WsMessage(matchHeader, null, WsPrefix.Wsd | WsPrefix.Wsdp, additionalPrefixes,
new WsAppSequence(Device.AppSequence, Device.SequenceID, Device.MessageID));
WsSoapMessageWriter smw = new WsSoapMessageWriter(this.Version);
smw.WriteSoapMessageStart(xmlWriter, msg);
// write body
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "ResolveMatches", null);
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "ResolveMatch", null);
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsa, "EndpointReference", null);
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsa, "Address", null);
xmlWriter.WriteString(epRef.Address.AbsoluteUri);
xmlWriter.WriteEndElement(); // End Address
xmlWriter.WriteEndElement(); // End EndpointReference
// Write hosted service types
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "Types", null);
WriteDeviceServiceTypes(xmlWriter);
xmlWriter.WriteEndElement(); // End Types
string transport = Device.TransportAddress;
if(match)
{
int idx = transport.LastIndexOf('/');
if(idx != -1)
{
transport = transport.Substring(0, idx + 1);
transport += epAddr.Substring(epAddr.IndexOf("urn:uuid:") + 9);
}
}
int idx2 = transport.ToLower().IndexOf("localhost");
if(idx2 != -1)
{
transport = transport.Substring(0, idx2) + WsNetworkServices.GetLocalIPV4Address() + transport.Substring(idx2 + 9 /*localhost*/);
}
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "XAddrs", null);
xmlWriter.WriteString(transport);
xmlWriter.WriteEndElement(); // End XAddrs
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsd, "MetadataVersion", null);
xmlWriter.WriteString(Device.MetadataVersion.ToString());
xmlWriter.WriteEndElement(); // End MetadataVersion
xmlWriter.WriteEndElement(); // End ResolveMatch
xmlWriter.WriteEndElement(); // End ResolveMatches
smw.WriteSoapMessageEnd(xmlWriter);
msg.Body = xmlWriter.ToArray();
// Return stream buffer
return msg;
}
}
public WsMessage GetResponse(WsMessage req)
{
XmlReader reader = req.Reader;
WsWsaHeader header = req.Header;
// Build ProbeMatch
using(XmlMemoryWriter xmlWriter = XmlMemoryWriter.Create())
{
// Write service type namespaces
WsXmlNamespaces additionalPrefixes = new WsXmlNamespaces();
if (Device.Host != null)
{
additionalPrefixes = new WsXmlNamespaces();
additionalPrefixes.Add(Device.Host.ServiceNamespace);
}
WsServiceEndpoints hostedServices = Device.HostedServices;
int count = hostedServices.Count;
for (int i = 0; i < count; i++)
{
DpwsHostedService hostedService = (DpwsHostedService)hostedServices[i];
// Don't return Mex Service namespace
if (hostedService.ServiceTypeName == "Internal")
continue;
additionalPrefixes.Add(hostedService.ServiceNamespace);
}
WsWsaHeader responseHeader = new WsWsaHeader(
WsWellKnownUri.WstNamespaceUri + "/GetResponse", // Action
header.MessageID, // RelatesTo
header.ReplyTo.Address.AbsoluteUri, // To
null, null, null);
WsMessage resp = new WsMessage(responseHeader, null, WsPrefix.Wsx | WsPrefix.Wsdp, additionalPrefixes,
new WsAppSequence(Device.AppSequence, Device.SequenceID, Device.MessageID));
WsSoapMessageWriter smw = new WsSoapMessageWriter(m_version);
smw.WriteSoapMessageStart(xmlWriter, resp);
// write body
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsx, "Metadata", null);
// Write ThisModel metadata section
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsx, "MetadataSection", null);
xmlWriter.WriteAttributeString("Dialect", m_version.WsdpNamespaceUri + "/ThisModel");
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "ThisModel", null);
if (Device.ThisModel.Manufacturer != null && Device.ThisModel.Manufacturer != "")
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "Manufacturer", null);
xmlWriter.WriteString(Device.ThisModel.Manufacturer);
xmlWriter.WriteEndElement(); // End Manufacturer
}
if (Device.ThisModel.ManufacturerUrl != null && Device.ThisModel.ManufacturerUrl != "")
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "ManufacturerUrl", null);
xmlWriter.WriteString(Device.ThisModel.ManufacturerUrl);
xmlWriter.WriteEndElement(); // End ManufacturerUrl
}
if (Device.ThisModel.ModelName != null && Device.ThisModel.ModelName != "")
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "ModelName", null);
xmlWriter.WriteString(Device.ThisModel.ModelName);
xmlWriter.WriteEndElement(); // End ModelName
}
if (Device.ThisModel.ModelNumber != null && Device.ThisModel.ModelNumber != "")
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "ModelNumber", null);
xmlWriter.WriteString(Device.ThisModel.ModelNumber);
xmlWriter.WriteEndElement(); // End ModelNumber
}
if (Device.ThisModel.ModelUrl != null && Device.ThisModel.ModelUrl != "")
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "ModelUrl", null);
xmlWriter.WriteString(Device.ThisModel.ModelUrl);
xmlWriter.WriteEndElement(); // End ModelUrl
}
if (Device.ThisModel.PresentationUrl != null && Device.ThisModel.PresentationUrl != "")
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "PresentationUrl", null);
xmlWriter.WriteString(Device.ThisModel.PresentationUrl);
xmlWriter.WriteEndElement(); // End PresentationUrl
}
if (Device.ThisModel.Any != null)
{
Device.ThisModel.Any.WriteTo(xmlWriter);
}
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "ModelName", null);
xmlWriter.WriteString(Device.ThisModel.ModelName);
xmlWriter.WriteEndElement(); // End ModelName
xmlWriter.WriteEndElement(); // End ThisModel
xmlWriter.WriteEndElement(); // End MetadataSection
// Write ThisDevice metadata section
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsx, "MetadataSection", null);
xmlWriter.WriteAttributeString("Dialect", m_version.WsdpNamespaceUri + "/ThisDevice");
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "ThisDevice", null);
if (Device.ThisDevice.FriendlyName != null && Device.ThisDevice.FriendlyName != "")
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "FriendlyName", null);
xmlWriter.WriteString(Device.ThisDevice.FriendlyName);
xmlWriter.WriteEndElement(); // End FriendlyName
}
if (Device.ThisDevice.FirmwareVersion != null && Device.ThisDevice.FirmwareVersion != "")
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "FirmwareVersion", null);
xmlWriter.WriteString(Device.ThisDevice.FirmwareVersion);
xmlWriter.WriteEndElement(); // End FirmwareVersion
}
if (Device.ThisDevice.SerialNumber != null && Device.ThisDevice.SerialNumber != "")
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "SerialNumber", null);
xmlWriter.WriteString(Device.ThisDevice.SerialNumber);
xmlWriter.WriteEndElement(); // End SerialNumber
}
if (Device.ThisDevice.Any != null)
{
Device.ThisDevice.Any.WriteTo(xmlWriter);
}
xmlWriter.WriteEndElement(); // End ThisDevice
xmlWriter.WriteEndElement(); // End MetadataSection
// Write next MetadataSection
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsx, "MetadataSection", null);
xmlWriter.WriteAttributeString("Dialect", m_version.WsdpNamespaceUri + "/Relationship");
// Write Relationship Elements
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "Relationship", null);
xmlWriter.WriteAttributeString("Type", m_version.WsdpNamespaceUri + "/host");
// List used to maintain service endpoints that have been processed. Because the DPWS spec allows
// for multiple service types at a single endpoint address, we must make sure we only create
// a relationship once for all of the types at a service endpoint.
ArrayList processedEndpointList = new ArrayList();
// If a Host type exist add it
if (Device.Host != null)
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "Host", null);
WsWsaEndpointRef endpointReference;
endpointReference = (WsWsaEndpointRef)Device.Host.EndpointRefs[0];
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsa, "EndpointReference", null);
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsa, "Address", null);
xmlWriter.WriteString(endpointReference.Address.AbsoluteUri);
xmlWriter.WriteEndElement(); // End Address
xmlWriter.WriteEndElement(); // End EndpointReference
// Build list of all service types that share this endpoint address
/*
string serviceTypes = null;
if ((serviceTypes = BuildServiceTypesList(Device.Host, processedEndpointList)) == null)
serviceTypes = Device.Host.ServiceNamespace.Prefix + ":" + Device.Host.ServiceTypeName;
else
serviceTypes = serviceTypes + " " + Device.Host.ServiceNamespace.Prefix + ":" + Device.Host.ServiceTypeName;
*/
// Write service types
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "Types", null);
xmlWriter.WriteString(Device.Host.ServiceNamespace.Prefix + ":" + Device.Host.ServiceTypeName);
xmlWriter.WriteEndElement(); // End Types
// Write Service ID
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "ServiceId", null);
xmlWriter.WriteString(Device.Host.ServiceID);
xmlWriter.WriteEndElement(); // End ServiceID
xmlWriter.WriteEndElement(); // End Hosted
// Update processed endpoint list
processedEndpointList.Add(Device.Host.EndpointAddress);
}
// Add hosted services types
int serviceCount = hostedServices.Count;
DpwsHostedService currentService;
for (int i = 0; i < serviceCount; i++)
{
currentService = (DpwsHostedService)hostedServices[i];
// Don't return Mex Service type
if (currentService.ServiceTypeName == "Internal")
continue;
// Build list of all service types that share this endpoint address
string serviceTypes = null;
if ((serviceTypes = BuildServiceTypesList(currentService, processedEndpointList)) == null)
continue;
// Write hosted start element
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "Hosted", null);
// Write n number of endpoint references
int epRefCount = currentService.EndpointRefs.Count;
for (int j = 0; j < epRefCount; j++)
{
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsa, "EndpointReference", null);
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsa, "Address", null);
xmlWriter.WriteString(currentService.EndpointRefs[j].Address.AbsoluteUri);
xmlWriter.WriteEndElement(); // End Address
xmlWriter.WriteEndElement(); // End EndpointReference
}
// Write service types
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "Types", null);
xmlWriter.WriteString(currentService.ServiceNamespace.Prefix + ":" + currentService.ServiceTypeName);
xmlWriter.WriteEndElement(); // End Types
// Write Service ID
xmlWriter.WriteStartElement(WsNamespacePrefix.Wsdp, "ServiceId", null);
xmlWriter.WriteString(currentService.ServiceID);
xmlWriter.WriteEndElement(); // End ServiceID
xmlWriter.WriteEndElement(); // End Hosted
// Update processed endpoint list
processedEndpointList.Add(currentService.EndpointAddress);
}
xmlWriter.WriteEndElement(); // End Relastionship
xmlWriter.WriteEndElement(); // End MetadataSection
xmlWriter.WriteEndElement(); // End Metadata
smw.WriteSoapMessageEnd(xmlWriter);
resp.Body = xmlWriter.ToArray();
return resp;
}
}
internal static byte[] BuildHelloMessage(string endpointAddress, WsWsaHeader header, XmlReader reader)
{
MemoryStream soapStream = new MemoryStream();
XmlWriter xmlWriter = XmlWriter.Create(soapStream);
WsXmlNamespaces additionalPrefixes = null;
// If a Host exist write the Host namespace
if (Device.Host != null)
{
additionalPrefixes = new WsXmlNamespaces();
additionalPrefixes.Add(Device.Host.ServiceNamespace);
}
WsWsaHeader helloHeader = new WsWsaHeader(
WsWellKnownUri.WsdNamespaceUri + "/Hello", // Action
null, // RelatesTo
endpointAddress, // To
null, null, null); // ReplyTo, From, Any
WsSoapMessageWriter.WriteSoapMessageStart(xmlWriter,
WsSoapMessageWriter.Prefixes.Wsd | WsSoapMessageWriter.Prefixes.Wsdp, // Prefix
additionalPrefixes, // Additional Prefixes
helloHeader, // Header
new WsSoapMessageWriter.AppSequence(Device.AppSequence, Device.SequenceID, Device.MessageID)); // AppSequence
// write body
xmlWriter.WriteStartElement("wsd", "Hello", WsWellKnownUri.WsdNamespaceUri);
xmlWriter.WriteStartElement("wsa", "EndpointReference", WsWellKnownUri.WsaNamespaceUri_2005_08);
xmlWriter.WriteStartElement("wsa", "Address", WsWellKnownUri.WsaNamespaceUri_2005_08);
xmlWriter.WriteString(Device.EndpointAddress);
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
// Write hosted service types
xmlWriter.WriteStartElement("wsd", "Types", WsWellKnownUri.WsdNamespaceUri);
WriteDeviceServiceTypes(xmlWriter, false);
xmlWriter.WriteEndElement(); // End Types
xmlWriter.WriteStartElement("wsd", "XAddrs", WsWellKnownUri.WsdNamespaceUri);
xmlWriter.WriteString(Device.TransportAddress);
xmlWriter.WriteEndElement();
xmlWriter.WriteStartElement("wsd", "MetadataVersion", WsWellKnownUri.WsdNamespaceUri);
xmlWriter.WriteString(Device.MetadataVersion.ToString());
xmlWriter.WriteEndElement();
xmlWriter.WriteEndElement();
// Flush and close writer. Return stream buffer
WsSoapMessageWriter.WriteSoapMessageEnd(xmlWriter);
xmlWriter.Flush();
xmlWriter.Close();
return soapStream.ToArray();
}
/// <summary>
/// Builds a probe request message based on the filters parameter.
/// </summary>
/// <param name="serviceAddress">
/// A string containing the target service address.
/// For example: urn:uuid:3cb0d1ba-cc3a-46ce-b416-212ac2419b20
/// </param>
/// <param name="filters">
/// A DpwsServiceTypes object containing a collection of types a service must support to signal a match.
/// Null = any type.
/// </param>
/// <param name="messageID">
/// A string used to return the messageID assigned to this message.
/// </param>
/// <returns>A byte array containing the probe message or null if an error occures.</returns>
private byte[] BuildProbeRequest(string serviceAddress, DpwsServiceTypes filters, out String messageID)
{
// Performance debugging
DebugTiming timeDebuger = new DebugTiming();
long startTime = timeDebuger.ResetStartTime("");
// Build Probe request
MemoryStream soapStream = new MemoryStream();
XmlWriter xmlWriter = XmlWriter.Create(soapStream);
WsWsaHeader header = new WsWsaHeader(
WsWellKnownUri.WsdNamespaceUri + "/Probe", // Action
null, // RelatesTo
serviceAddress, // To
null, null, null); // ReplyTo, From, Any
// If filters are supplied, write filter namespaces if prefixed. Build filter list for use later,
// include wsdp:device.
WsXmlNamespaces namespaces = new WsXmlNamespaces();
// Prefix hack for now:
int i = 0;
string prefix;
string filterList = "";
bool spaceFlag = false;
if (filters != null)
{
int count = filters.Count;
for (int j = 0; j < count; j++)
{
DpwsServiceType serviceType = filters[j];
prefix = namespaces.LookupPrefix(serviceType.NamespaceUri);
if (prefix == null)
{
prefix = "MyPrefix" + (i++);
namespaces.Add(new WsXmlNamespace(prefix, serviceType.NamespaceUri));
}
filterList = filterList + ((spaceFlag == true) ? " " : "") + prefix + ":" + serviceType.TypeName;
spaceFlag = true;
}
}
messageID = WsSoapMessageWriter.WriteSoapMessageStart(xmlWriter,
WsSoapMessageWriter.Prefixes.Wsd, namespaces, header, null);
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Header Took");
// write body
xmlWriter.WriteStartElement("wsd", "Probe", null);
// If filter is supplied add filter types tag else write blank string to probe body, force an empty tag
if (filterList.Length != 0)
{
xmlWriter.WriteStartElement("wsd", "Types", null);
xmlWriter.WriteString(filterList);
xmlWriter.WriteEndElement(); // End Filter
}
else
xmlWriter.WriteString("");
xmlWriter.WriteEndElement(); // End Probe
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Body Took");
WsSoapMessageWriter.WriteSoapMessageEnd(xmlWriter);
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***Probe Message Build Took");
// Flush and close writer
xmlWriter.Flush();
xmlWriter.Close();
// return the probe message
return soapStream.ToArray();
}