OSC question?

Is OSC Sender.send method blocking?

I have a created a little VST to accept midi and fire off OSC data to a micro controller over the network which is cool and works well. Effectively linking my DAW to my MC. My question is given that a receive midibuffer in the process block. Is it best add those messages to to a queue and have another thread pick them up or is it safe to just sender.send in the audio thread as sender does this anyway?

I dont need to worry too much about triggering at the right sample offset in this iteration