/**
* Used to assemble an EbXmlMessage from the given Stream, which has been accepted from the network.
* This expects to get the inbound HTTP stream (or at least an SslStream) from the start, because it
* begins processing with the HTTP POST.
*/
public EbXmlMessage(Stream instream)
{
// Assemble from network - note that Spine messages are NOT chunked
//
string headerline = null;
Dictionary <string, string> headers = new Dictionary <string, string>();
while ((headerline = readLine(instream)).Trim().Length != 0)
{
if (headerline.StartsWith("POST"))
{
int firstSpace = headerline.IndexOf(' ');
int secondSpace = headerline.IndexOf(' ', firstSpace + 1);
if ((firstSpace == -1) || (secondSpace == -1))
{
throw new Exception("Malformed HTTP request line, can't parse POST context path");
}
receivedContextPath = headerline.Substring(firstSpace, secondSpace - firstSpace);
}
else
{
int colon = headerline.IndexOf(":");
if (colon == -1)
{
throw new Exception("Malformed HTTP header - no field/data delimiter colon");
}
headers.Add(headerline.Substring(0, colon).ToUpper(), headerline.Substring(colon + 1).Trim());
}
}
string ctype = headers["CONTENT-TYPE"];
if (ctype == null)
{
throw new Exception("Malformed HTTP headers - no Content-Type found");
}
if (ctype.Contains("multipart/related"))
{
mimeboundary = setMimeBoundary(ctype);
}
receivedHost = headers["HOST"];
string clen = headers["CONTENT-LENGTH"];
if (clen == null)
{
throw new Exception("Malformed HTTP headers - no Content-Length found");
}
int contentlength = Int32.Parse(clen);
soapAction = headers["SOAPACTION"];
soapAction = soapAction.Replace('"', ' ').Trim();
// There is a bug in Spine-hosted services that turns a SOAPaction starting with
// "urn:" into "urn:urn:" - fix this if we find it.
//
if (soapAction.StartsWith("urn:urn:"))
{
soapAction = soapAction.Substring(4);
}
// Read content-length bytes and parse out the various parts of the
// received message.
// TODO: Put in proper handling.
//
Byte[] wire = new Byte[contentlength];
int bytesRead = 0;
while (bytesRead < contentlength)
{
bytesRead += instream.Read(wire, bytesRead, contentlength - bytesRead);
}
string msg = Encoding.UTF8.GetString(wire);
// Split on the mimeboundary. "msg" doesn't contain the HTTP headers so we should
// just be able to walk through the attachments. If we can't, report an exception
//
int startPosition = msg.IndexOf(mimeboundary, 0);
if (startPosition == -1)
{
// Need to handle the case where the content is
// actually an asynchronous ebXML ack.
//
// If content-type is text/xml and soapaction contains Acknowledgment or MessageError,
// it is an ack/nack. If we get one of these we need to log it and tell the connection
// manager about it. But we don't need to do any further processing.
//
if (ctype.ToLower().StartsWith("text/xml"))
{
if (soapAction.Contains("Acknowledgment"))
{
// Remove from requests, and exit
string a = EbXmlAcknowledgment.getAckedMessageId(msg);
if (a == null)
{
EventLog logger = new EventLog("Application");
logger.Source = ConnectionManager.LOGSOURCE;
StringBuilder sb = new StringBuilder("Failed to extract message id reference from Acknowledgment: ");
sb.Append(msg);
logger.WriteEntry(sb.ToString(), EventLogEntryType.Error);
return;
}
ConnectionManager cm = ConnectionManager.getInstance();
cm.registerAck(a);
return;
}
if (soapAction.Contains("MessageError"))
{
// Remove from requests, and exit
string a = EbXmlAcknowledgment.getAckedMessageId(msg);
if (a == null)
{
EventLog logger = new EventLog("Application");
logger.Source = ConnectionManager.LOGSOURCE;
StringBuilder sb = new StringBuilder("Failed to extract message id reference from MessageError: ");
sb.Append(msg);
logger.WriteEntry(sb.ToString(), EventLogEntryType.Error);
return;
}
EventLog l = new EventLog("Application");
l.Source = ConnectionManager.LOGSOURCE;
StringBuilder sbe = new StringBuilder("EbXML MessageError received: ");
sbe.Append(msg);
l.WriteEntry(sbe.ToString(), EventLogEntryType.Error);
ConnectionManager cm = ConnectionManager.getInstance();
cm.registerAck(a);
return;
}
}
throw new Exception("Malformed message");
}
int endPosition = 0;
int partCount = 0;
bool gotEndBoundary = false;
do
{
startPosition += mimeboundary.Length;
endPosition = msg.IndexOf(mimeboundary, startPosition);
if (endPosition == -1)
{
gotEndBoundary = true;
}
else
{
switch (partCount)
{
case 0:
header = new EbXmlHeader(msg.Substring(startPosition, endPosition - startPosition));
if (header.Timestamp != null)
{
started = DateTime.Parse(header.Timestamp);
// We don't know how many attempts were actually made, so assume
// only one try at the start time.
//
lastTry = DateTime.Parse(header.Timestamp);
tries = 1;
}
break;
case 1:
hl7message = new SpineHL7Message(msg.Substring(startPosition, endPosition - startPosition));
break;
default:
if (attachments == null)
{
attachments = new List <Attachment>();
}
// IMPROVEMENT: Make this more flexible to be able to support multiple types of
// ITK trunk message, just in case
//
if (soapAction.Contains("COPC_IN000001GB01"))
{
attachments.Add(new ITKDistributionEnvelopeAttachment(msg.Substring(startPosition, endPosition - startPosition)));
}
else
{
attachments.Add(new GeneralAttachment(msg.Substring(startPosition, endPosition - startPosition)));
}
break;
}
partCount++;
startPosition = endPosition;
}
}while (!gotEndBoundary);
// persistDuration = (int)(ConnectionManager.getInstance().getPersistDuration(header.SvcIA).TotalSeconds);
}
/**
* Checks to see if the given EbXmlMessage is acknowledged asynchronously, and just returns
* if not. Otherwise, constructs an EbXMLAcknowledgment addressed to the sender of "msg",
* and calls the ConnectionManager to send it.
*
* @param EbXmlMessage to acknowledge
*/
private void doAsynchronousAck(EbXmlMessage msg)
{
if (msg == null)
return;
if (!msg.Header.DuplicateElimination)
return;
if (msg.Header.SyncReply)
return;
StringBuilder a = new StringBuilder(makeEbXmlAck(msg, false));
ConnectionManager cm = ConnectionManager.getInstance();
SDSconnection sds = cm.SdsConnection;
string ods = msg.Header.FromPartyKey.Substring(0, msg.Header.FromPartyKey.IndexOf("-"));
List<SdsTransmissionDetails> sdsdetails = sds.getTransmissionDetails(ACKSERVICE, ods, null, msg.Header.FromPartyKey);
a.Replace("__CPA_ID__", sdsdetails[0].CPAid);
EbXmlAcknowledgment ack = new EbXmlAcknowledgment(a.ToString());
ack.setHost(sdsdetails[0].Url);
cm.send(ack, sdsdetails[0]);
}
