Hello,
I'm heaving some troubles with the Traci Distance request.
According to the documentation the message has the following parameters:
byte
integer
Position
Position
byte
ubyte
value type compound
item number (always 3)
start position
end position
value type ubyte
Distance Type
When I send the message according to this format, the simulation crashed.
I've taken a look in the source code of the TraCIServerAPI_Simulation.cpp and
discovered the reason of the crash.
The message has a checked unsigned byte for the distance type. At line 451 a
call is made to read a 'normal' unsigned byte. The distType gets the wrong
value (0x07 = UBYTE) and the number of byte read doesn't match the length of
the message.
The following code change solved the problem:
// read distance type
//int distType = inputStorage.readUnsignedByte();
int distType = 0;
if (!server.readTypeCheckingUnsignedByte(inputStorage, distType)) {
server.writeStatusCmd(commandId, RTYPE_ERR, "Destination position type must be
of type ubyte.");
return false;
}
Another possible bug-fix is sending the distance type as an unchecked unsigned
byte and leave the cpp code unchanged.
What is the preferred solution?
Met vriendelijke groet,
Wim van Husen
Engineer Productontwikkeling
T +31 88 811 56 27
M +31 6 22 60 93 12
[email protected]<mailto:[email protected]>
Sweco Nederland B.V.
De Holle Bilt 22
3732 HM De Bilt
T +31 88 811 66 00
Handelsregister 30129769
www.sweco.nl<http://www.sweco.nl>
[cid:[email protected]]
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