I want to use the UDT开发者_运维知识库 library in Python, so I need a wrapper. I found this one: pyudt, but I dont know exactly how to use this to send files from a peer to peer. Can anybody point me in the right direction?
after so many time I've found this question and its solution:
The steps to install pyudt-0.1a are:
install: libboost-python1.46-dev or equivalent (for instance, in linux-ubuntu12.04 it's in the reps.)
install udt.h (from: http://sourceforge.net/projects/udt/) into a system directory,
OR
(put the udt.h file in the same path as the pyudt-0.1a files, and then change a line of the "pyudt.cpp", from:
#include <udt.h>
to:
#include "udt.h"
).
- update the version of boost_python library, in "setup.py" to the one you're using,
eg.:
... libraries=['udt', 'boost_python-py27'])
- change the following line(s) in "pyudt.cpp":
you must correct a bug, changing from:
int r = UDT::send(_sock, data.c_str(), data.length(), 0);
to:
int r = UDT::send(_sock, data.c_str(), data.length()+1, 0);
because the character "\0" meaning the end of string must also be sent, otherwise junk would be appended to your string.
optionally, you may choose between:
_sock = UDT::socket(AF_INET, SOCK_DGRAM, 0); --» default
or:
_sock = UDT::socket(AF_INET, SOCK_STREAM, 0); --» optional
- finally, run,
in the corresponding folder:
python2.7 ./setup.py build
sudo python2.7 ./setup.py install
OR, (if you don't have admin permissions to install it for all the users, and just wanna try it for you:
python2.7 ./setup.py build
python2.7 ./setup.py install --prefix=~/pyudt-0.1a/installation_dir/ #in this case, pyudt would only work if called from that directory
)
Then, the code for a simple client can be:
import pyudt
socket = pyudt.pyudt_socket()
socket.connect(("127.0.0.1", 7000))
socket.send("hello_world!")
and it works, it talks with my cpp server!
notice: if you need more help you can write in the python's console:
import pyudt
dir(pyudt.pyudt_socket) # to list the available functions
help(pyudt) # to get more help
PS. the files created with this installation tutorial are: /usr/local/lib/python2.7/dist-packages/pyudt.so, and /usr/local/lib/python2.7/dist-packages/pyudt-0.1a.egg-info
You can give my udt_py fork a try. It includes a sample recvfile.py
now and can retrieve files from the sendfile
daemon in udt's app
directory.
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