public static HL7v2 Parse(string hl7)
{
HL7v2 msg = new HL7v2();
msg._field_delim = '|';
msg._component_delim = '^';
msg._subcomponent_delim = '&';
string line = null;
StringReader reader = new StringReader(hl7);
while ((line = reader.ReadLine()) != null) {
line = line.Trim();
if (line == String.Empty)
continue;
string id = line.Substring(0, 3);
if (IsHeaderSegment(id)) {
msg._field_delim = line[3];
msg._component_delim = line[4];
msg._subcomponent_delim = line[7];
List<string> segment = new List<string>();
segment.Add(id);
segment.Add(new string(new char[] { msg._field_delim }));
segment.AddRange(line.Substring(4).Split(msg._field_delim));
msg._segments.Add(segment);
} else {
msg._segments.Add(new List<string>(line.Split(msg._field_delim)));
}
}
return msg;
}
private void HL7ClientProc(object state)
{
Socket socket = (Socket)state;
try {
Interlocked.Increment(ref _clients);
Debug.Log.Info("HL7 client connected: " + socket.RemoteEndPoint);
NetworkStream stream = new NetworkStream(socket);
MLLP mllp = new MLLP(stream, false, _encoding);
while (socket.Connected && !_stop)
{
if (!socket.Poll(100000, SelectMode.SelectRead))
{
continue;
}
try {
if (!stream.DataAvailable)
{
break;
}
} catch {
// http://msdn.microsoft.com/en-us/library/system.net.sockets.networkstream.dataavailable.aspx
// "If the remote host shuts down or closes the connection, DataAvailable may throw a SocketException."
break;
}
string hl7 = mllp.Receive();
if (OnReceiveMessage != null)
{
try {
HL7v2 req = HL7v2.Parse(hl7);
HL7v2 rsp = OnReceiveMessage(mllp, req, socket);
if (rsp != null)
{
mllp.Send(rsp.ToString());
}
} catch (Exception ex) {
Debug.Log.Error("Error processing HL7 message: " + ex.ToString());
}
}
}
Debug.Log.Info("HL7 client closed: " + socket.RemoteEndPoint);
try {
socket.Close();
} catch {
}
} catch {
Debug.Log.Info("HL7 client closed on error");
} finally {
Interlocked.Decrement(ref _clients);
}
}
private void HL7ClientProc(object state)
{
Socket socket = (Socket)state;
try {
Interlocked.Increment(ref _clients);
Debug.Log.Info("HL7 client connected: " + socket.RemoteEndPoint);
NetworkStream stream = new NetworkStream(socket);
MLLP mllp = new MLLP(stream, false);
while (socket.Connected && !_stop)
{
if (!stream.DataAvailable)
{
Thread.Sleep(50);
continue;
}
string message = mllp.Receive();
if (OnReceiveMessage != null)
{
try {
HL7v2 hl7 = HL7v2.Parse(message);
OnReceiveMessage(mllp, hl7);
} catch (Exception ex) {
Debug.Log.Error("Error in HL7 message handler: " + ex.ToString());
}
}
}
try {
socket.Close();
} catch {
}
Debug.Log.Info("HL7 client closed: " + socket.RemoteEndPoint);
} catch {
Debug.Log.Info("HL7 client closed on error: " + socket.RemoteEndPoint);
} finally {
Interlocked.Decrement(ref _clients);
}
}
public static HL7v2 Parse(string hl7)
{
HL7v2 msg = new HL7v2();
msg._field_delim = '|';
msg._component_delim = '^';
msg._subcomponent_delim = '&';
string line = null;
StringReader reader = new StringReader(hl7);
while ((line = reader.ReadLine()) != null)
{
line = line.Trim();
if (line == String.Empty)
{
continue;
}
string id = line.Substring(0, 3);
if (IsHeaderSegment(id))
{
msg._field_delim = line[3];
msg._component_delim = line[4];
msg._subcomponent_delim = line[7];
List <string> segment = new List <string>();
segment.Add(id);
segment.Add(new string(new char[] { msg._field_delim }));
segment.AddRange(line.Substring(4).Split(msg._field_delim));
msg._segments.Add(segment);
}
else
{
msg._segments.Add(new List <string>(line.Split(msg._field_delim)));
}
}
return(msg);
}
