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Regarding rosbridge, is your concern about ASCII parsing due to performance or implementation?

I would think there are a number of existing libraries for JSON parsing. A quick google search yielded a few options:

  • http://www.mathworks.com/matlabcentral/fileexchange/20565
  • http://www.cs.sunysb.edu/~kyamagu/software/json/

Regarding performance, it is obvious that a binary version of rosbridge would bring a big improvement. We have not done this in order to keep the protocol open and separate from a specific implementation. However, contributions to better support binary and compressed data in rosbridge would be very welcome.