This extension is a C++ extension to CPython. And is tested on Linux only.

Note: The default UDT repo does not specify an install path for the UDT library in its Makefile. The attached submodule will by default install it into /usr/lib{,64} and /usr/include/udt. If you have installed it in a different location, you may need to edit the setup.py for the linking step.

#
# ls 
# setup.py README.md lib example ... 
# 
git submodule init 
git submodule update 

# move library and headers to appropriate location 
pushd udt/UDT4 
make
make install 
sudo cp src/libudt.{so,a} /usr/lib64/   # or /usr/lib/ on 32 it
sudo cp src/udt /usr/include/ 
popd 

# build extension 
python setup.py build 
sudo python setup.py install 

pydoc udt4 and pydoc udt4.pyudt are the best sources for documentation.

The library is separated into two primary parts:

• Content imported from udt4 interface with the udt4.UDTSOCKET type which is a direct representation of the UDTSOCKET C-type and is not callable, but is rather the first argument on most udt4 functions. All function signatures attempt to more closely match the C-api interface.

• Content imported from udt4.pyudt attempts to match the socket.socket() interface provided by the standard library. The class wraps the udt4.UDTSOCKET type.

udt4.UDTSOCKET

# Raw socket object. 

Classes designed to be operated on by udt4 functions.

socket = udt4.socket( ... ) 
print(socket)                   # <type 'UDTSOCKET'> 

udt4.UDTepoll

epoll  = udt4.UDTepoll() 
print(epoll)                    # <type 'UDTepoll'>  

epoll.add_usock(<type 'UDTSOCKET'> socket, int(flags)) 

Classes designed to work with other pyudt classes.

pyudt.UdtSocket()

socket = pyudt.UdtSocket( ... ) 
print(socket)                   # <udt4.pyudt.UdtSocket object>  

pyudt.Epoll()

epoll = pyudt.Epoll() 
print(epoll)                    # <udt4.pyudt.Epoll object> 

epoll.add_usock(<udt4.pyudt.UdtSocket object> socket, int(flags))