/// <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;
}
/// <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();
}