• Using in realtime pvp game that need miniest network delay. For example, the multiplayer first person shooting game.
• Reliable UDP protocal.
• Minimize delay. And the worst delay should be good. 3 or more times better than enet when worst network lag happen.
• Has good performace in wifi and phone network(3G, 4G).
• Extra using 20% ~ 50% network flow for speed improvement.

worst network lag happen:
asio: 10:51.21
291  295   269   268   231   195   249   230   225   204

enet: 10:51.21
1563   1520    1470    1482    1438    1454    1412    1637    1588    1540

• Do not using boost. And do not using feature of c++11
• It's implement by original thread and socket.
• client_lib_usage

• Please read the doc: docker/docker_readme.md

• I using boost 1.58

  • Other version of boost should be OK. You can compile asio_kcp as verifying.

• Build g2log

  • download g2log from official website
  • • or using the package in third_party folder.
  • cope g2log folder to third_party folder
  • $ cd third_party/g2log/ && mkdir build && cd build && cmake .. && make

• Build muduo

  • $ cd third_party/
  • $ git clone https://github.com/chenshuo/muduo.git
  • • or using the package in third_party folder. third_party folder.
  • $ cd muduo
  • compile on OSX: $ patch -p1 < MacOSX.diff
    • edit muduo/CMakeLists.txt.
      • find set(CXX_FLAGS then add 2 new line:
        • -D__GXX_EXPERIMENTAL_CXX0X__
        • -std=c++11
      • comment -march=native
      • comment set(CMAKE_CXX_COMPILER "clang++")
      • comment -Werror
      • uncomment -DMUDUO_STD_STRING
  • compile on linux:
    • edit muduo/CMakeLists.txt.
      • find set(CXX_FLAGS then add 2 new line:
        • -D__GXX_EXPERIMENTAL_CXX0X__
        • -std=c++11
      • uncomment -DMUDUO_STD_STRING
      • comment -Werror
  • modify muduo/base/LogStream.h kSmallBuffer = 4000 -> kSmallBuffer = 4000*4
  • adding VERBOSE=1 to "make" in muduo/build.sh will show detail of compiling.
  • $ CC=gcc CXX=g++ BUILD_DIR=./build BUILD_TYPE=release BUILD_NO_EXAMPLES=1 . ./build.sh

• modify the BOOST_LIB_PATH and BOOST_INC_PATH in allmake.sh

• do compiling at project root folder: $ . allmake.sh

The third_party folder should like below,

▾ third_party/
  ▾ g2log/
    ▸ build/
    ▸ src/
    ▸ test_example/
    ▸ test_performance/
    ▸ test_unit/
      CMakeLists.txt
  ▸ muduo/

• download gtest from website
  • or just use the package in third_party folder.
• unpack the gtest-1.7.0.zip. coping gtest-1.7.0 folder to asio_kcp/third_party/
• $ cd gtest-1.7.0 && ./configure && make
• download googlemock from https://googlemock.googlecode.com/files/gmock-1.7.0.zip
  • or just use the package in third_party folder.
• unpack the gmock-1.7.0.zip. coping gmock-1.7.0 folder to asio_kcp/third_party/
• $ cd gmock-1.7.0 && ./configure && make
• back to asio_kcp folder then $ . utest_make.sh
• $ ./asio_kcp_utest/asio_kcp_utest

The third_party folder should like below,

▾ third_party/
  ▸ g2log/
  ▸ gmock-1.7.0/
  ▸ gtest-1.7.0/
  ▸ muduo/

./server/server 0.0.0.0 12345 2>&1 | grep --line-buffered -v -e deadline_timer -e "ec=system:0$" -e "|$" >>bserver.txt

./client_with_asio/client_with_asio 23425 127.0.0.1 12345 500 2>/dev/null

• Server on your server

git checkout kcp_bench_mark_test
read the readme.md in this branch. and do compiling thing.
then run server on your server:
  ./server/server 0.0.0.0 12345 2>&1 | grep --line-buffered -v -e deadline_timer -e "ec=system:0$" -e "|$" >>bserver.txt

• run client on your client computer

git checkout kcp_bench_mark_test
read the readme.md in this branch. and do compiling thing.
./client_with_asio/client_with_asio 23445 120.26.200.117 12345 500 2>/dev/null
# Note: changing the ip and port to your server which is running the asio_kcp_server

• if you want to test the 3G/4G. you can share the wifi on your phone by using wiless AP. Making your client computer connect to this wifi.
• run client on your client computer (Note: changing the ip and port to your server)

• $ yum -y install python-devel
• $ tar jxvf boost_1_58_0.tar.bz2
• $ cd boost_1_58_0
• $ ./bootstrap.sh
• $ sudo ./b2 install --build-type=complete --layout=tagged

• strings /usr/lib64/libstdc++.so.6 | grep GLIBC // check the GLIBCXX_3.4.15. It is not in it.
• sudo find / -name "libstdc++.so*" 2>/dev/null // find the latest libstdc++.so It should be /usr/local/lib64/libstdc++.so.6.0.18
• sudo rm /usr/lib64/libstdc++.so.6
• sudo cp /usr/local/lib64/libstdc++.so.6.0.18 /usr/lib64/
• sudo ln -s /usr/lib64/libstdc++.so.6.0.18 /usr/lib64/libstdc++.so.6
• sudo vim /etc/ld.so.conf // add a new line: /usr/lib64
• sudo ldconfig // all ok

• install port if do not have one: https://www.macports.org/install.php
• port search gcc # show gcc version
• sudo /opt/local/bin/port install gcc48
• sudo /opt/local/bin/port select --set gcc mp-gcc48
• last step, close old shell, open a new shell.

• https://stackoverflow.com/questions/104322/how-do-you-install-boost-on-macos