on_send callbacks receive the message as an argument
on_send callbacks receive the message as an argument

ArvinPan/pyzmq,yyt030/pyzmq,yyt030/pyzmq,Mustard-Systems-Ltd/pyzmq,caidongyun/pyzmq,ArvinPan/pyzmq,swn1/pyzmq,dash-dash/pyzmq,Mustard-Systems-Ltd/pyzmq,dash-dash/pyzmq,dash-dash/pyzmq,caidongyun/pyzmq,Mustard-Systems-Ltd/pyzmq,swn1/pyzmq,swn1/pyzmq,ArvinPan/pyzmq,yyt030/pyzmq,caidongyun/pyzmq