/// <summary>
/// Loop epm receive process
/// </summary>
private static void epmReceiveLoop()
{
byte[] responseStub = new byte[eptMapResponseStub.Length];
Buffer.BlockCopy(eptMapResponseStub, 0, responseStub, 0, eptMapResponseStub.Length);
while (true)
{
RpceServerSessionContext context;
ushort opnum;
try
{
byte[] requestStub = epmServer.ExpectCall(EPM_RECEIVE_LOOP_TIMEOUT, out context, out opnum);
if (opnum == eptMapOpnum)
{
p_syntax_id_t ifSpec = new p_syntax_id_t();
// 37 == offset of interface uuid, 16 == the size of uuid
ifSpec.if_uuid = new Guid(ArrayUtility.SubArray(requestStub, 37, 16));
//53 == offset of interface vers_major
ifSpec.if_vers_major = BitConverter.ToUInt16(requestStub, 53);
//57 == offset of interface vers_minor
ifSpec.if_vers_minor = BitConverter.ToUInt16(requestStub, 57);
if (endpointMap.ContainsKey(ifSpec))
{
//copy tower from request stub to response stub
//37 is the offset to interface uuid in request
//53 is the offset to interface uuid in response
Buffer.BlockCopy(requestStub, 37, responseStub, 53, 70);
//modify the endpoint in big enddian oder, offset is 112
responseStub[112] = (byte)(endpointMap[ifSpec] >> 8);
responseStub[113] = (byte)endpointMap[ifSpec];
//modify the address, offset is 119
Buffer.BlockCopy(hostIp.GetAddressBytes(), 0, responseStub, 119, 4);
//todo support Ipv6
epmServer.SendResponse(context, responseStub);
}
}
}
catch (TimeoutException)
{
continue;
}
}
}
