public static async Task <WsFilesPreviewReaderEngine> Create(WsHttpClient httpClient, Task <WsFilesReader> filesReaderTask, HttpResponseMessage responseMessage)
{
WsFilesPreviewReaderEngine engine = new WsFilesPreviewReaderEngine(httpClient, responseMessage);
XmlDocument xml = new XmlDocument();
xml.Load(await engine._responseMessage.Content.ReadAsStreamAsync());
engine._xmlReader = new XmlNodeReader(xml.DocumentElement);
if (engine._xmlReader.Read() && engine._xmlReader.Name == ROOT_ELEMENT_NAME && engine._xmlReader.Read() && engine.ReadNextElement(out string status) == "status")
{
engine.Status = status;
if (engine.Status != ResultStatus.OK)
{
if (engine.ReadNextElement(out string errorCode) == "code")
{
engine.ErrorCode = errorCode;
}
engine.Dispose();
}
else if (engine.ReadNextElement(out _) != "name" || engine.ReadNextElement(out _) != "total" || engine.ReadNextElement(out _) != "size")
{
engine.Status = "Xml format error.";
engine.Dispose();
}
}
/// <summary>
/// Sends a directed Probe request and parses ProbeMatches responses.
/// </summary>
/// <param name="endpointAddress">
/// A string containing a Dpws devices transport endpoint address.
/// For example: http://192.168.0.1:8084/3cb0d1ba-cc3a-46ce-b416-212ac2419b20
/// </param>
/// <param name="targetServiceAddress">
/// A string containing the target service address to probe for.
/// 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>
/// <remarks>
/// A directed Probe is used to discover services on a network. The DirectedProbe method sends a
/// HTTP request to the service specified endpointAddress parameter. A service at the endpoint that
/// implements matching types specified in the filters parameter should respond with a ProbeMatches
/// message. The ProbeMatches mesgage is returned as the response to the DirectedProbe request.
/// If a null filter is supplied any Dpws complient service should reply with a ProbeMatches reponse.
/// This method is used to directly ask for service endpoint information.
/// </remarks>
/// <returns>
/// A collection of ProbeMatches objects. A ProbeMatch object contains endpoint details used
/// used to locate the actual service on a network and the types supported by the service.
/// </returns>
/// <exception cref="InvalidOperationException">If a fault response is received.</exception>
public DpwsServiceDescriptions DirectedProbe(string endpointAddress, string targetServiceAddress, DpwsServiceTypes filters)
{
// Build the probe request message
string messageID = null;
byte[] probeRequest = BuildProbeRequest(targetServiceAddress, filters, out messageID);
System.Ext.Console.Write("");
System.Ext.Console.Write("Sending DirectedProbe:");
System.Ext.Console.Write(new string(new UTF8Encoding().GetChars(probeRequest)));
System.Ext.Console.Write("");
// Create an http client and send the probe request. Use a WspHttpClient to get an array response.
WsHttpClient httpClient = new WsHttpClient();
byte[] probeResponse = httpClient.SendRequest(probeRequest, endpointAddress, false, false);
// Build probe matches collection
DpwsServiceDescriptions probeMatches = new DpwsServiceDescriptions();
DpwsDiscoClientProcessor soapProcessor = new DpwsDiscoClientProcessor();
if (probeResponse != null)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("ProbeMatches Response From: " + endpointAddress);
System.Ext.Console.Write(new String(System.Text.Encoding.UTF8.GetChars(probeResponse)));
try
{
DpwsServiceDescriptions tempMatches = soapProcessor.ProcessProbeMatch(probeResponse, messageID, null, null);
if (tempMatches != null)
{
int count = tempMatches.Count;
for (int i = 0; i < count; i++)
{
probeMatches.Add(tempMatches[i]);
}
}
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write(e.Message);
System.Ext.Console.Write("");
}
}
if (probeMatches.Count == 0)
{
return(null);
}
else
{
return(probeMatches);
}
}
private async Task <byte[]> GetJpgData(WsHttpClient httpClient)
{
if (_disposed || string.IsNullOrWhiteSpace(Url))
{
return(JpgData.Result);
}
try
{
using (_cts = new CancellationTokenSource())
using (HttpResponseMessage response = await httpClient.GetData(new Uri(Url), _cts.Token))
{
return(await response.Content.ReadAsByteArrayAsync());
}
}
finally
{
_cts = null;
}
}
/// <summary>
/// Used by the subscription manager to send a subscription end message to a listening client.
/// </summary>
/// <param name="eventSink">An event sink object containing the client endpoint information.</param>
/// <param name="subEndType">A string that specifies the reason fot the subscription end.</param>
/// <param name="subMangerID">A id used by the client to identify this subcription.</param>
/// <remarks>If an error occures when sending an event message this method is called to tell
/// the client this subscription has been expired.
/// </remarks>
private void SendSubscriptionEnd(DpwsWseEventSink eventSink, string subEndType, string subMangerID)
{
// if we weren't given an EndTo, don't send
if (eventSink.EndTo == null)
{
return;
}
// Parse the http transport address
if (eventSink.EndTo.Address.Scheme == "http")
{
WsHttpClient httpClient = new WsHttpClient();
httpClient.SendRequest(SubscriptionEndResponse(eventSink, subEndType, subMangerID), eventSink.EndTo.Address.AbsoluteUri, true, false);
}
else
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Unsupported transport address Subscription EndTo.Address: " + eventSink.EndTo.Address);
System.Ext.Console.Write("");
return;
}
}
/// <summary>
/// Sends a directed Resolve request and parses ResolveMatch response.
/// </summary>
/// <param name="endpointAddress">
/// A string containing a Dpws devices transport endpoint address.
/// For example: http://192.168.0.1:8084/3cb0d1ba-cc3a-46ce-b416-212ac2419b20
/// </param>
/// <param name="serviceAddress">
/// A string containing the address of a service that will handle the resolve request.
/// For example: urn:uuid:2bcdd1ba-cc3a-46ce-b416-212ac2419b20
/// </param>
/// <param name="targetServiceAddress">
/// A string containing the address of a service that can process the resolve request.
/// For example: urn:uuid:3cb0d1ba-cc3a-46ce-b416-212ac2419b20
/// </param>
/// <remarks>
/// A Resolve is used to resolve the transport address of a know service. The request contains a service
/// address aquired from configuration or a previous Resolve or Metadata Get request.
/// The DirectedResolve method sends a Http request to the specified endpoint address.
/// If the endpoint contains a device with this address receives the request, it must send a unicast ResolveMatches
/// response back to the client that made the request.
/// </remarks>
/// <returns>
/// A collection of ResolveMatches objects. A ResolveMatch object contains endpoint details used
/// used to locate the actual service on a network and the types supported by the service.
/// </returns>
public DpwsServiceDescription DirectedResolve(string endpointAddress, string serviceAddress, string targetServiceAddress)
{
String messageID = "";
WsMessage resolveRequest = BuildResolveRequest(targetServiceAddress, serviceAddress, ref messageID);
if (resolveRequest == null)
{
return(null);
}
System.Ext.Console.Write("");
System.Ext.Console.Write("Sending Resolve:");
System.Ext.Console.Write(resolveRequest.Body as byte[]);
// Create an http client and send the resolve request. Use a WspHttpClient to get an array response.
WsHttpClient httpClient = new WsHttpClient(m_version);
WsMessage resolveResponse = httpClient.SendRequest(resolveRequest, new Uri(endpointAddress));
DpwsDiscoClientProcessor soapProcessor = new DpwsDiscoClientProcessor(m_version);
DpwsServiceDescription resolveMatch = soapProcessor.ProcessResolveMatch(resolveResponse, messageID, null, null);
return(resolveMatch);
}
/// <summary>
/// Sends a directed Resolve request and parses ResolveMatch response.
/// </summary>
/// <param name="endpointAddress">
/// A string containing a Dpws devices transport endpoint address.
/// For example: http://192.168.0.1:8084/3cb0d1ba-cc3a-46ce-b416-212ac2419b20
/// </param>
/// <param name="serviceAddress">
/// A string containing the address of a service that will handle the resolve request.
/// For example: urn:uuid:2bcdd1ba-cc3a-46ce-b416-212ac2419b20
/// </param>
/// <param name="targetServiceAddress">
/// A string containing the address of a service that can process the resolve request.
/// For example: urn:uuid:3cb0d1ba-cc3a-46ce-b416-212ac2419b20
/// </param>
/// <remarks>
/// A Resolve is used to resolve the transport address of a know service. The request contains a service
/// address aquired from configuration or a previous Resolve or Metadata Get request.
/// The DirectedResolve method sends a Http request to the specified endpoint address.
/// If the endpoint contains a device with this address receives the request, it must send a unicast ResolveMatches
/// response back to the client that made the request.
/// </remarks>
/// <returns>
/// A collection of ResolveMatches objects. A ResolveMatch object contains endpoint details used
/// used to locate the actual service on a network and the types supported by the service.
/// </returns>
public DpwsServiceDescription DirectedResolve(string endpointAddress, string serviceAddress, string targetServiceAddress)
{
String messageID = "";
byte[] resolveRequest = BuildResolveRequest(targetServiceAddress, serviceAddress, ref messageID);
if (resolveRequest == null)
{
return(null);
}
System.Ext.Console.Write("");
System.Ext.Console.Write("Sending Resolve:");
System.Ext.Console.Write(new string(new UTF8Encoding().GetChars(resolveRequest)));
// Create an http client and send the resolve request. Use a WspHttpClient to get an array response.
WsHttpClient httpClient = new WsHttpClient();
byte[] resolveResponse = httpClient.SendRequest(resolveRequest, endpointAddress, false, false);
DpwsDiscoClientProcessor soapProcessor = new DpwsDiscoClientProcessor();
DpwsServiceDescription resolveMatch = soapProcessor.ProcessResolveMatch(resolveResponse, messageID, null, null);
return(resolveMatch);
}
/// <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 get the status of an event subscription.
/// </summary>
/// <param name="endpointAddress">
/// A Uri containing the endpoint address of the service or subscription manager that is currently
/// maintaining this event subscription on behalf of the device. This address is an http uri
/// (i.e. http://ip_address:port/serviceID).
/// </param>
/// <param name="subscriptionID">
/// A subscription ID returned from a previous subscribe response. The device uses this ID
/// to identify a specific event source subscription.
/// </param>
/// <returns>
/// A WsDuration object containing the remaining subscription time for this event subscription, null = infinite.
/// </returns>
public WsDuration GetStatus(Uri endpointAddress, string subscriptionID)
{
// Performance debugging
DebugTiming timeDebuger = new DebugTiming();
long startTime = timeDebuger.ResetStartTime("");
// Build Renew request
using (XmlMemoryWriter xmlWriter = XmlMemoryWriter.Create())
{
WsXmlNodeList nodeList = new WsXmlNodeList();
nodeList.Add(new WsXmlNode(WsNamespacePrefix.Wse, "Identifier", null, subscriptionID));
WsWsaHeader header = new WsWsaHeader(
m_version.EventingNamespace + "/GetStatus", // Action
null, // RelatesTo
endpointAddress.AbsoluteUri, // To
null, null, nodeList); // ReplyTo, From, Any
WsMessage msg = new WsMessage(header, null, WsPrefix.Wse, null, 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.Soap, "Body", null);
xmlWriter.WriteStartElement(WsNamespacePrefix.Wse, "GetStatus", null);
xmlWriter.WriteString("");
xmlWriter.WriteEndElement(); // End GetStatus
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Body Took");
smw.WriteSoapMessageEnd(xmlWriter);
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***Renew Message Build Took");
// Create an Http client and send GetStatus request
WsHttpClient httpClient = new WsHttpClient(m_version);
msg.Body = xmlWriter.ToString();
WsMessage getStatusResponse = httpClient.SendRequest(msg, endpointAddress);
// If a GetStatus response is received validate the messageID and action and get the remaining
// event subscription time. If a fault is received print exception and go on.
if (getStatusResponse == null)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Renew response is null.");
return(null);
}
else
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Response From: " + endpointAddress.Host);
System.Ext.Console.Write(getStatusResponse.Body as byte[]);
// Note: Since the response is the same for GetStatus ans it is for Renew reuse the
// Renew response parser.
try
{
return(ProcessRenewResponse((byte[])getStatusResponse.Body, messageID));
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Unsubscribe response parsing failed.");
System.Ext.Console.Write(e.Message);
}
}
}
return(null);
}
/// <summary>
/// Use to unsubscribe from a devices event source.
/// </summary>
/// <param name="endpointAddress">
/// A Uri containing the endpoint address of the service or subscription manager that is currently
/// maintaining this event subscription on behalf of the device. This address is an http uri
/// (i.e. http://ip_address:port/serviceID).
/// </param>
/// <param name="subscription">An event subscription returned from a previous subscribe call.
/// The subscription contains among other things a subscription ID used by the subscription manager
/// to identify a specific event source subscription and the endpoint address of the subscription manager.
/// </param>
/// <returns>True if the Unsubscribe request was successful.</returns>
public bool Unsubscribe(Uri endpointAddress, DpwsEventSubscription subscription)
{
// Performance debugging
DebugTiming timeDebuger = new DebugTiming();
long startTime = timeDebuger.ResetStartTime("");
// Build Unsubscribe Request
using (XmlMemoryWriter xmlWriter = XmlMemoryWriter.Create())
{
WsXmlNodeList nodeList = new WsXmlNodeList();
nodeList.Add(new WsXmlNode(null, "identifier", WsWellKnownUri.WseNamespaceUri, subscription.SubscriptionID));
WsWsaHeader header = new WsWsaHeader(
m_version.EventingNamespace + "/Unsubscribe", // Action
null, // RelatesTo
endpointAddress.AbsoluteUri, // To
m_version.AddressingNamespace, // ReplyTo
subscription.SubscriptionManager.Address.AbsoluteUri, // From
nodeList); // Identifier
WsMessage msg = new WsMessage(header, null, WsPrefix.Wse, null, 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, "Unsubscribe", null);
xmlWriter.WriteString("");
xmlWriter.WriteEndElement(); // End Unsubscribe
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Body Took");
smw.WriteSoapMessageEnd(xmlWriter);
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***Unsubscribe Message Build Took");
// Create an Http client and send Unsubscribe request
WsHttpClient httpClient = new WsHttpClient(m_version);
msg.Body = xmlWriter.ToArray();
WsMessage unsubscribeResponse = httpClient.SendRequest(msg, endpointAddress);
// If a unsubscribe response is received simple validate that the messageID and action are correct and
// If a parsing fault is received print exception and go on.
if (unsubscribeResponse == null)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Unsubscribe response is null.");
return(false);
}
else
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Response From: " + endpointAddress.Host);
System.Ext.Console.Write(unsubscribeResponse.Body as byte[]);
try
{
return(ProcessUnsubscribeResponse((byte[])unsubscribeResponse.Body, messageID));
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Unsubscribe response parsing failed.");
System.Ext.Console.Write(e.Message);
return(false);
}
}
}
}
/// <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);
}
}
void SimpleServiceClient_HelloEvent(object obj, DpwsServiceDescription helloEventArgs)
{
m_receivedHelloEvent = true;
DpwsMetadata m_mexDetails = null;
try
{
// Print Hello information
//Log.Comment("");
//Log.Comment("SimpleService received a hello request.");
////Log.Comment("Endpoint address: " + helloEventArgs.Endpoint.Address.AbsoluteUri);
string types = "";
int count = helloEventArgs.ServiceTypes.Count;
for (int i = 0; i < count; i++)
{
DpwsServiceType type = helloEventArgs.ServiceTypes[i];
types += "NamespaceUri: " + type.NamespaceUri + " " + "TypeName: " + type.TypeName + "\n";
}
////Log.Comment("Types: " + types);
if (helloEventArgs.XAddrs != null)
{
foreach (String xaddr in helloEventArgs.XAddrs)
{
////Log.Comment("Xaddrs: " + xaddr);
}
}
////Log.Comment("Metadata version: " + helloEventArgs.MetadataVersion);
////Log.Comment("");
// Probe for services. For each valid probe match, print service information.
DpwsServiceType searchType = new DpwsServiceType("SimpleService", "http://schemas.example.org/SimpleService");
DpwsServiceTypes searchTypes = new DpwsServiceTypes();
searchTypes.Add(searchType);
// Accept the first 10 found within the first 10 seconds
DpwsServiceDescriptions probeMatches = this.DiscoveryClient.Probe(searchTypes, 1, 10000);
// retry
if (probeMatches.Count == 0)
{
probeMatches = this.DiscoveryClient.Probe(searchTypes, 1, 10000);
}
if (probeMatches != null)
{
// Print the probe match information
////Log.Comment("**********************");
////Log.Comment("ProbeMatches received: " + probeMatches.Count);
int probeMatchCount = probeMatches.Count;
for (int i = 0; i < probeMatchCount; i++)
{
DpwsServiceDescription probeMatch = probeMatches[i];
////Log.Comment("");
////Log.Comment("ProbeMatch:");
////Log.Comment(" Endpoint Address = " + probeMatch.Endpoint.Address.AbsoluteUri);
////Log.Comment(" Types:");
PrintServiceTypes(probeMatch.ServiceTypes);
//////Log.Comment(" Xaddrs:");
//foreach (string xaddr in probeMatch.XAddrs)
// //Log.Comment(" TransportAddress = " + xaddr);
////Log.Comment(" Metadata Version = " + probeMatch.MetadataVersion);
// Resolve this endpoint
DpwsServiceDescription resolveMatch = this.DiscoveryClient.Resolve(probeMatch.Endpoint.Address.AbsoluteUri, 10000);
if (resolveMatch != null)
{
// Print resolve match information
////Log.Comment("");
////Log.Comment("ResolveMatch:");
////Log.Comment(" Endpoint Address = " + resolveMatch.Endpoint.Address.AbsoluteUri);
////Log.Comment(" Types:");
PrintServiceTypes(resolveMatch.ServiceTypes);
////Log.Comment(" Xaddrs:");
//foreach (string xaddr in resolveMatch.XAddrs)
// //Log.Comment(" TransportAddress = " + xaddr);
//Log.Comment(" Metadata Version = " + resolveMatch.MetadataVersion);
// For each Xaddr, get metadata
foreach (string xaddr in resolveMatch.XAddrs)
{
// Call Get
m_mexDetails = this.MexClient.Get(xaddr);
if (m_mexDetails == null)
{
////Log.Comment("Get failed. Address: " + xaddr);
}
else
{
m_getMex = true;
// Display metadata information
////Log.Comment(" Metadata:");
////Log.Comment(" ThisModel:");
////Log.Comment(" Manufacturer: " + m_mexDetails.ThisModel.Manufacturer);
////Log.Comment(" ManufacturerUrl: " + m_mexDetails.ThisModel.ManufacturerUrl);
////Log.Comment(" ModelName: " + m_mexDetails.ThisModel.ModelName);
////Log.Comment(" ModelNumber: " + m_mexDetails.ThisModel.ModelNumber);
////Log.Comment(" ModelUrl: " + m_mexDetails.ThisModel.ModelUrl);
////Log.Comment(" PresentationUrl: " + m_mexDetails.ThisModel.PresentationUrl);
////Log.Comment(" ThisDevice:");
////Log.Comment(" FirmwareVersion: " + m_mexDetails.ThisDevice.FirmwareVersion);
////Log.Comment(" FriendlyName: " + m_mexDetails.ThisDevice.FriendlyName);
////Log.Comment(" SerialNumber: " + m_mexDetails.ThisDevice.SerialNumber);
if (m_mexDetails.Relationship.Host != null)
{
////Log.Comment(" Host:");
////Log.Comment(" Service ID: " + m_mexDetails.Relationship.Host.ServiceID);
////Log.Comment(" Address: " + m_mexDetails.Relationship.Host.EndpointRefs[0].Address.AbsoluteUri);
////Log.Comment(" Types:");
PrintServiceTypes(m_mexDetails.Relationship.Host.ServiceTypes);
}
if (m_mexDetails.Relationship.HostedServices != null)
{
////Log.Comment(" HostedServices:");
int hostedServiceCount = m_mexDetails.Relationship.HostedServices.Count;
for (int j = 0; j < hostedServiceCount; j++)
{
DpwsMexService hostedService = m_mexDetails.Relationship.HostedServices[j];
////Log.Comment(" Service ID: " + hostedService.ServiceID);
////Log.Comment(" Address: " + hostedService.EndpointRefs[0].Address.AbsoluteUri);
////Log.Comment(" Types:");
PrintServiceTypes(hostedService.ServiceTypes);
}
}
}
}
if (m_mexDetails != null)
{
// Look for the SimpleService in the HostedServices collection, create an HTTP
// client, call TwoWayRequest on the service endpoint, and display the result.
int hostedServiceCount = m_mexDetails.Relationship.HostedServices.Count;
for (int j = 0; j < hostedServiceCount; j++)
{
DpwsMexService hostedService = m_mexDetails.Relationship.HostedServices[j];
if (hostedService.ServiceTypes["SimpleService"] != null) // found a SimpleService endpoint
{
string endpointAddress = hostedService.EndpointRefs[0].Address.AbsoluteUri;
////Log.Comment("");
////Log.Comment("Calling TwoWayRequest at endpoint: " + endpointAddress);
// Create HttpClient and send request
int x = 150;
int y = 180;
byte[] TwoWayRequest = Build2wayRequest(x, y, endpointAddress);
//Log.Comment(new String(System.Text.Encoding.UTF8.GetChars(TwoWayRequest)));
//DpwsHttpClient httpClient = new DpwsHttpClient();
//DpwsSoapResponse response = httpClient.SendRequest(TwoWayRequest, endpointAddress, false, false);
WsHttpClient httpClient = new WsHttpClient(m_version);
WsMessage response = httpClient.SendRequest(new WsMessage(null, TwoWayRequest, WsPrefix.Wsdp), new Uri(endpointAddress));
if (response != null) // got a response
{
try
{
int sum = Parse2WayResponse(response.Header, response.Reader);
//Log.Comment("");
//Log.Comment("Received sum of " + sum.ToString() + " from " + endpointAddress);
if ((x + y) == sum)
{
m_twoWay = true;
}
}
finally
{
response.Reader.Close();
}
}
}
}
}
//Log.Comment("");
}
}
}
}
finally
{
}
if (m_mexDetails != null)
{
arHello.Set();
}
}
public MFTestResults TransportTest2_DpwsHttpClient()
{
/// <summary>
/// 1. Verifies each of the proerties of a DpwsHttpClient object
/// 2. Sets and re-verifies.
/// </summary>
///
bool testResult = true;
try
{
WsHttpClient testDHC = new WsHttpClient(new ProtocolVersion10());
Random random = new Random();
int timeout = random.Next(10000);
Log.Comment("ReceiveTimeout");
if (testDHC.ReceiveTimeout.GetType() !=
Type.GetType("System.Int32"))
{
throw new Exception("ReceiveTimeout wrong type");
}
testDHC.ReceiveTimeout = timeout;
if (testDHC.ReceiveTimeout.GetType() !=
Type.GetType("System.Int32"))
{
throw new Exception("ReceiveTimeout wrong type after set to new");
}
if (testDHC.ReceiveTimeout != timeout)
{
throw new Exception("ReceiveTimeout wrong data after set to new");
}
Log.Comment("SendTimeout");
timeout = random.Next(10000);
if (testDHC.SendTimeout.GetType() !=
Type.GetType("System.Int32"))
{
throw new Exception("SendTimeout wrong type");
}
testDHC.SendTimeout = timeout;
if (testDHC.SendTimeout.GetType() !=
Type.GetType("System.Int32"))
{
throw new Exception("SendTimeout wrong type after set to new");
}
if (testDHC.SendTimeout != timeout)
{
throw new Exception("SendTimeout wrong data after set to new");
}
}
catch (Exception e)
{
testResult = false;
Log.Comment("Incorrect exception caught: " + e.Message);
}
return(testResult ? MFTestResults.Pass : MFTestResults.Fail);
}
/// <summary>
/// Use to request metadata from a devices hosted service endpoint.
/// </summary>
/// <param name="serviceAddress">
/// A string containing the transport address of a service endpoint. For Dpws the address represents
/// a devices transport address.
/// For example: http://192.168.0.1:8084/3cb0d1ba-cc3a-46ce-b416-212ac2419b20
/// </param>
/// <returns>
/// A collection of DpwsMetadata objects containing endpoint details about services hosted by a device.
/// </returns>
public DpwsMetadata Get(string serviceAddress)
{
// Convert the address string to a Uri
Uri serviceUri = null;
try
{
serviceUri = new Uri(serviceAddress);
if (serviceUri.Scheme != "http")
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Invalid serviceAddress. 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 Get Request
using (XmlMemoryWriter xmlWriter = XmlMemoryWriter.Create())
{
WsWsaHeader header = new WsWsaHeader(
WsWellKnownUri.WstNamespaceUri + "/Get", // Action
null, // RelatesTo
"urn:uuid:" + serviceUri.AbsolutePath.Substring(1), // To
m_version.AnonymousUri, // ReplyTo
null, null); // From, Any
WsMessage msg = new WsMessage(header, null, WsPrefix.None, null, null);
WsSoapMessageWriter smw = new WsSoapMessageWriter(m_version);
String messageID = smw.WriteSoapMessageStart(xmlWriter, msg);
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Header Took");
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Body Took");
smw.WriteSoapMessageEnd(xmlWriter);
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***Get Message Build Took");
// Create an Http client and send Get request
WsHttpClient httpClient = new WsHttpClient(m_version);
System.Ext.Console.Write("");
System.Ext.Console.Write("Sending Get to: " + serviceAddress);
msg.Body = xmlWriter.ToArray();
WsMessage getResponse = httpClient.SendRequest(msg, new Uri(serviceAddress));
// If a get response is received process it and return DpwsMetadata object
DpwsMetadata metadata = null;
if (getResponse == null || getResponse.Body == null)
{
return(null);
}
else
{
DpwsDiscoClientProcessor soapProcessor = new DpwsDiscoClientProcessor(m_version);
try
{
System.Ext.Console.Write(getResponse.Body as byte[]);
System.Ext.Console.Write("");
metadata = soapProcessor.ProcessGetResponse((byte[])getResponse.Body, messageID);
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Get response parser threw an exception. " + e.Message);
return(null);
}
}
return(metadata);
}
}
/// <summary>
/// Use to get the status of an event subscription.
/// </summary>
/// <param name="endpointAddress">
/// A Uri containing the endpoint address of the service or subscription manager that is currently
/// maintaining this event subscription on behalf of the device. This address is an http uri
/// (i.e. http://ip_address:port/serviceID).
/// </param>
/// <param name="subscriptionID">
/// A subscription ID returned from a previous subscribe response. The device uses this ID
/// to identify a specific event source subscription.
/// </param>
/// <returns>
/// A WsDuration object containing the remaining subscription time for this event subscription, null = infinite.
/// </returns>
public WsDuration GetStatus(Uri endpointAddress, string subscriptionID)
{
// Performance debugging
DebugTiming timeDebuger = new DebugTiming();
long startTime = timeDebuger.ResetStartTime("");
// Build Renew request
MemoryStream soapStream = new MemoryStream();
XmlWriter xmlWriter = XmlWriter.Create(soapStream);
WsXmlNodeList nodeList = new WsXmlNodeList();
nodeList.Add(new WsXmlNode("wse", "Identifier", null, subscriptionID));
WsWsaHeader header = new WsWsaHeader(
WsWellKnownUri.WseNamespaceUri + "/GetStatus", // Action
null, // RelatesTo
endpointAddress.AbsoluteUri, // To
null, null, nodeList); // ReplyTo, From, Any
String messageID = WsSoapMessageWriter.WriteSoapMessageStart(xmlWriter,
WsSoapMessageWriter.Prefixes.Wse, null, header, null);
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Header Took");
// write body
xmlWriter.WriteStartElement("soap", "Body", null);
xmlWriter.WriteStartElement("wse", "GetStatus", null);
xmlWriter.WriteString("");
xmlWriter.WriteEndElement(); // End GetStatus
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Body Took");
WsSoapMessageWriter.WriteSoapMessageEnd(xmlWriter);
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***Renew Message Build Took");
// Flush and close writer
xmlWriter.Flush();
xmlWriter.Close();
// Create an Http client and send GetStatus request
WsHttpClient httpClient = new WsHttpClient();
byte[] getStatusResponse = null;
try
{
getStatusResponse = httpClient.SendRequest(soapStream.ToArray(), endpointAddress.ToString(), false, false);
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("GetStatus failed. " + e.Message);
return(null);
}
// If a GetStatus response is received validate the messageID and action and get the remaining
// event subscription time. If a fault is received print exception and go on.
if (getStatusResponse == null)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Renew response is null.");
return(null);
}
else
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Response From: " + endpointAddress.Host);
System.Ext.Console.Write(new String(System.Text.Encoding.UTF8.GetChars(getStatusResponse)));
// Note: Since the response is the same for GetStatus ans it is for Renew reuse the
// Renew response parser.
try
{
return(ProcessRenewResponse(getStatusResponse, messageID));
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Unsubscribe response parsing failed.");
System.Ext.Console.Write(e.Message);
}
}
return(null);
}
/// <summary>
/// Use to unsubscribe from a devices event source.
/// </summary>
/// <param name="endpointAddress">
/// A Uri containing the endpoint address of the service or subscription manager that is currently
/// maintaining this event subscription on behalf of the device. This address is an http uri
/// (i.e. http://ip_address:port/serviceID).
/// </param>
/// <param name="subscription">An event subscription returned from a previous subscribe call.
/// The subscription contains among other things a subscription ID used by the subscription manager
/// to identify a specific event source subscription and the endpoint address of the subscription manager.
/// </param>
/// <returns>True if the Unsubscribe request was successful.</returns>
public bool Unsubscribe(Uri endpointAddress, DpwsEventSubscription subscription)
{
// Performance debugging
DebugTiming timeDebuger = new DebugTiming();
long startTime = timeDebuger.ResetStartTime("");
// Build Unsubscribe Request
MemoryStream soapStream = new MemoryStream();
XmlWriter xmlWriter = XmlWriter.Create(soapStream);
WsXmlNodeList nodeList = new WsXmlNodeList();
nodeList.Add(new WsXmlNode(null, "identifier", WsWellKnownUri.WseNamespaceUri, subscription.SubscriptionID));
WsWsaHeader header = new WsWsaHeader(
WsWellKnownUri.WseNamespaceUri + "/Unsubscribe", // Action
null, // RelatesTo
endpointAddress.AbsoluteUri, // To
WsWellKnownUri.WsaAnonymousUri, // ReplyTo
subscription.SubscriptionManager.Address.AbsoluteUri, // From
nodeList); // Identifier
String messageID = WsSoapMessageWriter.WriteSoapMessageStart(xmlWriter,
WsSoapMessageWriter.Prefixes.Wse, null, header, null);
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Header Took");
// write body
xmlWriter.WriteStartElement("wse", "Unsubscribe", null);
xmlWriter.WriteString("");
xmlWriter.WriteEndElement(); // End Unsubscribe
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Body Took");
WsSoapMessageWriter.WriteSoapMessageEnd(xmlWriter);
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***Unsubscribe Message Build Took");
// Flush and close writer
xmlWriter.Flush();
xmlWriter.Close();
// Create an Http client and send Unsubscribe request
WsHttpClient httpClient = new WsHttpClient();
byte[] unsubscribeResponse = null;
try
{
unsubscribeResponse = httpClient.SendRequest(soapStream.ToArray(), endpointAddress.ToString(), false, false);
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Unsubscribe failed. " + e.Message);
return(false);
}
// If a unsubscribe response is received simple validate that the messageID and action are correct and
// If a parsing fault is received print exception and go on.
if (unsubscribeResponse == null)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Unsubscribe response is null.");
return(false);
}
else
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Response From: " + endpointAddress.Host);
System.Ext.Console.Write(new String(System.Text.Encoding.UTF8.GetChars(unsubscribeResponse)));
try
{
return(ProcessUnsubscribeResponse(unsubscribeResponse, messageID));
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Unsubscribe response parsing failed.");
System.Ext.Console.Write(e.Message);
return(false);
}
}
}
public MFTestResults TransportTest_HTTP_WsHttpClient()
{
/// <summary>
/// 1. Gets and verifies each of the properties of a WsHttpClient object
/// 2. Sets and re-verifies all properties
/// </summary>
///
bool testResult = true;
try
{
WsHttpClient testWHC = new WsHttpClient(new ProtocolVersion10());
Log.Comment("SendTimeout");
if (testWHC.SendTimeout.GetType() !=
Type.GetType("System.Int32"))
{
throw new Exception("SendTimeout wrong type");
}
testWHC.SendTimeout = 100;
if (testWHC.SendTimeout.GetType() !=
Type.GetType("System.Int32"))
{
throw new Exception("SendTimeout wrong type");
}
if (testWHC.SendTimeout != 100)
{
throw new Exception("SendTimeout wrong data");
}
Log.Comment("ReceiveTimeout");
if (testWHC.ReceiveTimeout.GetType() !=
Type.GetType("System.Int32"))
{
throw new Exception("ReceiveTimeout wrong type");
}
testWHC.ReceiveTimeout = 500;
if (testWHC.ReceiveTimeout.GetType() !=
Type.GetType("System.Int32"))
{
throw new Exception("ReceiveTimeout wrong type");
}
if (testWHC.ReceiveTimeout != 500)
{
throw new Exception("ReceiveTimeout wrong data");
}
}
catch (Exception e)
{
testResult = false;
Log.Comment("Incorrect exception caught: " + e.Message);
}
return(testResult ? MFTestResults.Pass : MFTestResults.Fail);
}
/// <summary>
/// Creates an instance of an DpwsHttpClient class.
/// </summary>
public DpwsHttpClient()
{
m_httpClient = new WsHttpClient();
}
internal void StartDownload(WsHttpClient httpClient)
{
_jpgData = GetJpgData(httpClient);
}
/// <summary>
/// Use to request metadata from a devices hosted service endpoint.
/// </summary>
/// <param name="serviceAddress">
/// A string containing the transport address of a service endpoint. For Dpws the address represents
/// a devices transport address.
/// For example: http://192.168.0.1:8084/3cb0d1ba-cc3a-46ce-b416-212ac2419b20
/// </param>
/// <returns>
/// A collection of DpwsMetadata objects containing endpoint details about services hosted by a device.
/// </returns>
public DpwsMetadata Get(string serviceAddress)
{
// Convert the address string to a Uri
Uri serviceUri = null;
try
{
serviceUri = new Uri(serviceAddress);
if (serviceUri.Scheme != "http")
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Invalid serviceAddress. 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 Get Request
MemoryStream soapStream = new MemoryStream();
XmlWriter xmlWriter = XmlWriter.Create(soapStream);
WsWsaHeader header = new WsWsaHeader(
WsWellKnownUri.WstNamespaceUri + "/Get", // Action
null, // RelatesTo
"urn:uuid:" + serviceUri.AbsolutePath.Substring(1), // To
WsWellKnownUri.WsaAnonymousUri, // ReplyTo
null, null); // From, Any
String messageID = WsSoapMessageWriter.WriteSoapMessageStart(xmlWriter,
WsSoapMessageWriter.Prefixes.None, null, header, null);
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Header Took");
// Performance debuging
timeDebuger.PrintElapsedTime("*****Write Body Took");
WsSoapMessageWriter.WriteSoapMessageEnd(xmlWriter);
// Performance debuging
timeDebuger.PrintTotalTime(startTime, "***Get Message Build Took");
// Flush and close writer
xmlWriter.Flush();
xmlWriter.Close();
// Create an Http client and send Get request
WsHttpClient httpClient = new WsHttpClient();
byte[] getResponse = null;
try
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Sending Get to: " + serviceAddress);
getResponse = httpClient.SendRequest(soapStream.ToArray(), serviceAddress, false, false);
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Get failed. " + e.Message);
return(null);
}
// If a get response is received process it and return DpwsMetadata object
DpwsMetadata metadata = null;
if (getResponse == null)
{
return(null);
}
else
{
System.Ext.Console.Write(new String(System.Text.Encoding.UTF8.GetChars(getResponse)));
System.Ext.Console.Write("");
DpwsDiscoClientProcessor soapProcessor = new DpwsDiscoClientProcessor();
try
{
metadata = soapProcessor.ProcessGetResponse(getResponse, messageID);
}
catch (Exception e)
{
System.Ext.Console.Write("");
System.Ext.Console.Write("Get response parser threw an exception. " + e.Message);
return(null);
}
}
return(metadata);
}
