在Ubuntu 20.04上安装NS3.34和NS3-gym

主要参考胡博文章，在20.04的Vultr主机上测试上可行。

由于Ubuntu 18.04上涉及到两个python，过于麻烦，因此尝试使用20.04安装。

TL;DR

wget -O /tmp/ns3.34.sh "https://ns3.minaduki.dev/ns3.34.sh" && chmod +x /tmp/ns3.34.sh && /tmp/ns3.34.sh

安装依赖

NS3相关

sudo apt install gcc g++ python gcc g++ python3 python3-dev mercurial python3-setuptools git qt5-default gir1.2-goocanvas-2.0 python3-gi python3-gi-cairo python3-pygraphviz gir1.2-gtk-3.0 ipython3 ipython3 openmpi-bin openmpi-common openmpi-doc libopenmpi-dev autoconf cvs bzr unrar gdb valgrind uncrustify doxygen graphviz imagemagick texlive texlive-extra-utils texlive-latex-extra texlive-font-utils texlive-lang-portuguese dvipng latexmk python3-sphinx dia gsl-bin libgslcblas0 libgsl-dev flex bison libfl-dev tcpdump sqlite sqlite3 libsqlite3-dev libxml2 libxml2-dev cmake libc6-dev libc6-dev-i386 libclang-dev llvm-dev automake libgtk2.0-0 libgtk2.0-dev vtun lxc libboost-all-dev libboost-filesystem-dev pkg-config sqlite3 cmake libc6-dev libc6-dev-i386 libclang-6.0-dev llvm-6.0-dev automake python3-pip

NS3-gym相关

sudo apt install libzmq5 libzmq3-dev libprotobuf-dev protobuf-compiler

下载NS3.34

使用3.34版本是因为之前的测试结果，在18.04上使用gcc-7.4能安装3.34和3.35，其他版本未作测试，目前仅测试了3.34版本和ns3-gym的兼容性。

cd ~
wget https://www.nsnam.org/releases/ns-allinone-3.34.tar.bz2 # 3.34或3.35，之后的版本会提示gcc版本低于8，暂未测试
tar -jxvf ns-allinone-3.34.tar.bz2

编译测试NS3

cd ns-allinone-3.34
# ./build.py
cd ns-3.34
./waf configure --enable-test --enable-examples
./waf

运行测试

./test.py -c core

运行可视化

./waf --run third --vis

在此基础上安装ns3-gym

准备源码

cd ~/ns-allinone-3.34/ns-3.34/contrib
git clone https://github.com/tkn-tub/ns3-gym.git ./opengym
cd opengym/
git checkout app

编译

cd ~/ns-allinone-3.34/ns-3.34
./waf configure --enable-test --enable-examples
./waf build

安装python module

cd ~/ns-allinone-3.34/ns-3.34/contrib/opengym/
pip3 install --user ./model/ns3gym

运行测试

Ubuntu 20.04自带的protobuf版本是3.6.1，相对低了一点，因此在运行是会报错：

_message.Message._CheckCalledFromGeneratedFile()
TypeError: Descriptors cannot not be created directly.
If this call came from a _pb2.py file, your generated code is out of date and must be regenerated with protoc >= 3.19.0.
If you cannot immediately regenerate your protos, some other possible workarounds are:
1. Downgrade the protobuf package to 3.20.x or lower.
2. Set PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python (but this will use pure-Python parsing and will be much slower).

所以在运行时先设置环境变量PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python再运行。

测试一：

cd ~/ns-allinone-3.34/ns-3.34/contrib/opengym/examples/opengym/
PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python ./simple_test.py

测试二：

# Terminal 1
cd ~/ns-allinone-3.34/ns-3.34
./waf --run "opengym"

# Terminal 2
cd ~/ns-allinone-3.34/ns-3.34/contrib/opengym/examples/opengym/
PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python ./test.py --start=0

参考：https://github.com/tkn-tub/ns3-gym/tree/app

复制这些就行

编译

sudo apt install -y gcc g++ python gcc g++ python3 python3-dev mercurial python3-setuptools git qt5-default gir1.2-goocanvas-2.0 python3-gi python3-gi-cairo python3-pygraphviz gir1.2-gtk-3.0 ipython3 ipython3 openmpi-bin openmpi-common openmpi-doc libopenmpi-dev autoconf cvs bzr unrar gdb valgrind uncrustify doxygen graphviz imagemagick texlive texlive-extra-utils texlive-latex-extra texlive-font-utils texlive-lang-portuguese dvipng latexmk python3-sphinx dia gsl-bin libgslcblas0 libgsl-dev flex bison libfl-dev tcpdump sqlite sqlite3 libsqlite3-dev libxml2 libxml2-dev cmake libc6-dev libc6-dev-i386 libclang-dev llvm-dev automake libgtk2.0-0 libgtk2.0-dev vtun lxc libboost-all-dev libboost-filesystem-dev pkg-config sqlite3 cmake libc6-dev libc6-dev-i386 libclang-6.0-dev llvm-6.0-dev automake python3-pip

sudo apt install -y libzmq5 libzmq3-dev libprotobuf-dev protobuf-compiler

cd ~
wget https://www.nsnam.org/releases/ns-allinone-3.34.tar.bz2
tar -jxvf ns-allinone-3.34.tar.bz2

cd ns-allinone-3.34
# ./build.py
cd ns-3.34
# ./waf configure --enable-test --enable-examples
# ./waf

cd ~/ns-allinone-3.34/ns-3.34/contrib
git clone https://github.com/tkn-tub/ns3-gym.git ./opengym
cd opengym/
git checkout app

cd ~/ns-allinone-3.34/ns-3.34
./waf configure --enable-test --enable-examples
./waf build

cd ~/ns-allinone-3.34/ns-3.34/contrib/opengym/
pip3 install --user ./model/ns3gym

测试

cd ~/ns-allinone-3.34/ns-3.34/
./test.py -c core
./waf --run third --vis

cd ~/ns-allinone-3.34/ns-3.34/contrib/opengym/examples/opengym/
PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python ./simple_test.py

# Terminal 1
cd ~/ns-allinone-3.34/ns-3.34
./waf --run "opengym"

# Terminal 2
cd ~/ns-allinone-3.34/ns-3.34/contrib/opengym/examples/opengym/
PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python ./test.py --start=0