/**
* Internal call method to actually perform the Pyro method call and process the result.
*/
private object call(string method, int flags, params object[] parameters)
{
lock(this) {
connect();
unchecked {
sequenceNr++; // unchecked so this ushort wraps around 0-65535 instead of raising an OverflowException
}
Console.WriteLine("seq="+sequenceNr);
}
if (parameters == null)
parameters = new object[] {};
object[] invokeparams = new object[] {
objectid, method, parameters, // vargs
new Hashtable(0) // no kwargs
};
Pickler pickler=new Pickler(false);
byte[] pickle = pickler.dumps(invokeparams);
pickler.close();
byte[] headerdata = MessageFactory.createMsgHeader(MessageFactory.MSG_INVOKE, pickle, flags, sequenceNr);
Message resultmsg;
lock (this.sock) {
IOUtil.send(sock_stream, headerdata);
IOUtil.send(sock_stream, pickle);
if(Config.MSG_TRACE_DIR!=null) {
MessageFactory.TraceMessageSend(sequenceNr, headerdata, pickle);
}
pickle = null;
headerdata = null;
if ((flags & MessageFactory.FLAGS_ONEWAY) != 0)
return null;
resultmsg = MessageFactory.getMessage(sock_stream, MessageFactory.MSG_RESULT);
}
if (resultmsg.sequence != sequenceNr) {
throw new PyroException("result msg out of sync");
}
if ((resultmsg.flags & MessageFactory.FLAGS_COMPRESSED) != 0) {
// we need to skip the first 2 bytes in the buffer due to a tiny mismatch between zlib-written
// data and the deflate data bytes that .net expects.
// See http://www.chiramattel.com/george/blog/2007/09/09/deflatestream-block-length-does-not-match.html
using(MemoryStream compressed=new MemoryStream(resultmsg.data, 2, resultmsg.data.Length-2, false)) {
using(DeflateStream decompresser=new DeflateStream(compressed, CompressionMode.Decompress)) {
MemoryStream bos = new MemoryStream(resultmsg.data.Length);
byte[] buffer = new byte[4096];
int numRead;
while ((numRead = decompresser.Read(buffer, 0, buffer.Length)) != 0) {
bos.Write(buffer, 0, numRead);
}
resultmsg.data=bos.ToArray();
}
}
}
if ((resultmsg.flags & MessageFactory.FLAGS_EXCEPTION) != 0) {
using(Unpickler unpickler=new Unpickler()) {
Exception rx = (Exception) unpickler.loads(resultmsg.data);
if (rx is PyroException) {
throw (PyroException) rx;
} else {
PyroException px = new PyroException("remote exception occurred", rx);
PropertyInfo remotetbProperty=rx.GetType().GetProperty("_pyroTraceback");
if(remotetbProperty!=null) {
string remotetb=(string)remotetbProperty.GetValue(rx,null);
px._pyroTraceback=remotetb;
}
throw px;
}
}
}
using(Unpickler unpickler=new Unpickler()) {
return unpickler.loads(resultmsg.data);
}
}
