Merge branch 'develop'

.gitattributes

+prrt/_version.py export-subst
+_version.py export-subst

.gitignore

+*.cbp
+*.pyc
+.vagrant/
+cython_debug/
+dist/
+prrt.egg-info/
+prrt/__pycache__/
+tests/__pycache__/
+MANIFEST
+prrt.cpython*.so
+prrt.so

.gitlab-ci.yml

+variables:
+  PYPI_USER: SECURE
+  PYPI_PASSWORD: SECURE
+  GIT_SUBMODULE_STRATEGY: recursive
+
+stages:
+  - build
+  - test
+  - deploy
+  - clean
+
+build:prrt:
+  stage: build
+  tags:
+    - cmake
+  artifacts:
+    name: "$CI_BUILD_REF_NAME$"
+    untracked: true
+    expire_in: "1h"
+  script:
+    - rm -vf ~/.pypirc
+    - which cmake
+    - which gcc
+    - which g++
+    - pip3 list | grep Cython
+    - pip3 list | grep numpy
+    - CC=gcc-5 CXX=g++-5 cmake . -DPRRT_TESTS=1
+    - make
+
+build:container:
+    stage: build
+    tags:
+        - docker
+    script:
+        - export DOCKER_TAG=$(echo "$CI_BUILD_REF_NAME" | sed 's#/#_#' | sed 's#^master$#latest#')
+        - docker build -t $CI_REGISTRY_IMAGE:$DOCKER_TAG --build-arg http_proxy=http://www-proxy.uni-saarland.de:3128 -f docker/Dockerfile .
+        - docker login -u gitlab-ci-token -p $CI_BUILD_TOKEN $CI_REGISTRY
+        - docker push $CI_REGISTRY_IMAGE:$DOCKER_TAG
+        - docker rmi $CI_REGISTRY_IMAGE:$DOCKER_TAG
+
+test:prrt_mem:
+  stage: test
+  dependencies:
+    - build:prrt
+  tags:
+    - valgrind
+  script:
+    - bash tests/memtest.sh
+
+test:prrt_functional:
+  stage: test
+  dependencies:
+    - build:prrt
+  tags:
+    - bash
+  script:
+    - exec ./bin/prrtTests
+
+test:prrt_python_bindings:
+  stage: test
+  tags:
+    - bash
+    - python3
+  script:
+    - sh tests/build.sh
+
+deploy:pypi:
+  stage: deploy
+  tags:
+    - python3
+  script:
+    - echo "[distutils]" >> ~/.pypirc
+    - echo "index-servers =" >> ~/.pypirc
+    - echo "  on" >> ~/.pypirc
+    - echo " " >> ~/.pypirc
+    - echo "[on]" >> ~/.pypirc
+    - echo "repository=http://git.nt.uni-saarland.de:5678" >> ~/.pypirc
+    - echo "username=$PYPI_USER" >> ~/.pypirc
+    - echo "password=$PYPI_PASSWORD" >> ~/.pypirc
+    - python3 setup.py check sdist bdist upload -r on
+    - rm -vf ~/.pypirc
\ No newline at end of file

.gitmodules

+[submodule "prrt/xlap"]
+	path = prrt/xlap
+	url = ../../as/X-Lap.git

CMakeLists.txt

+cmake_minimum_required (VERSION 2.8.11)
+project (PRRT)
+
+option(PRRT_TESTS "Build tests" OFF)
+
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/build)
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/build)
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+
+set(CMAKE_C_FLAGS "-O2 -Wall -std=gnu11 -D_GNU_SOURCE" )
+set(CMAKE_CXX_FLAGS "-fstack-protector -fstack-protector-all -Wall -std=gnu++11 -D_GNU_SOURCE" )
+set(CMAKE_CXX_FLAGS_DEBUG "-O2 -Wall -ggdb" )
+set(CMAKE_CXX_FLAGS_RELEASE "-Os -Wall" )
+
+
+find_package (Threads)
+find_library(M_LIB m)
+
+
+include_directories(${CMAKE_CURRENT_SOURCE_DIR})
+
+add_subdirectory(prrt)
+
+if(PRRT_TESTS)
+    enable_testing()
+
+    add_subdirectory(tests)
+
+    add_custom_target(funtest COMMAND ./bin/prrtTests)
+endif()
+
+add_custom_target(perftest COMMAND python3 tests/eval.py)
+add_custom_target(memtest COMMAND bash ./memtest.sh DEPENDS sender receiver)

MANIFEST.in

+include requirements.txt
+recursive-include src *
+recursive-include prrt *
+include versioneer.py
+include prrt/_version.py
+include _version.py

README.md

-# Predictable Reliable Realtime Transport
+# Predictably Reliable Real-Time (PRRT)
+
+**PRRT** is a transport protocol that aims to provide predictable reliability and latency. [http://larn.systems]()
+
+## Features
+
+* Forward Error Correction (FEC) using systematic Vandermonde codes
+* Clock synchronization between sending stack and receiving stack
+* Applications can specify packet-level expiration times
+* Different receive modes for ASAP and time-synchronized operation
+* Packet-level timing analysis using [X-Lap](http://xlap.larn.systems)
+* [Hardware timestamping support](https://git.nt.uni-saarland.de/LARN/PRRT/wikis/hardware-timestamping)
+
+## Installation
+
+*See [Installing PRRT](https://git.nt.uni-saarland.de/LARN/PRRT/wikis/installation#python) for instructions on how to install it on your system for using it with C/C++ or Python.*
+
+#### *Try PRRT on your system*
+
+A [minimal receiver](examples/receiver.py), which takes the bind port as an argument, is created as follows:
+
+```python
+import sys
+import prrt
+
+port = int(sys.argv[1])
+
+s = prrt.PrrtSocket(port=port, isSender=False)
+
+while True:
+    d = s.recv()
+    if d != "Close":
+        print d
+    else:
+        break
+```
+
+A [minimal sender](sender.py) is created as follows:
+
+```python
+import sys
+import prrt
+
+host = sys.argv[1]
+port = int(sys.argv[2])
+
+s = prrt.PrrtSocket(port=port, isSender=True)
+s.connect(host, port)
+
+for i in range(10):
+    s.send("Packet {}".format(i))
+s.send("Close")
+```
+
+Start the receiver by:
+
+```bash
+python receiver.py 5000
+```
+
+In a separate terminal, run:
+
+```bash
+python sender.py 127.0.0.1 5000
+```
+
+This should generate the following output in the receiver console:
+
+```terminal
+Packet 0
+Packet 1
+...
+Packet 9
+```
+
+## For more information
+
+* [PRRT Wiki](https://git.nt.uni-saarland.de/LARN/PRRT/wikis)
+* [LARN Project Website](http://larn.systems)
+
+## License
+
+[MIT Licence](LICENSE)

Vagrantfile

+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+Vagrant.configure(2) do |config|
+  config.vm.box = "ubuntu/xenial64"
+  config.vm.box_check_update = false
+
+  config.vm.provider "virtualbox" do |v|
+      v.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
+      v.name = "prrt"
+      v.memory = "2048"
+      v.cpus = "2"
+  end
+
+  config.vm.provision "shell", inline: <<-SHELL
+     sudo sed -i 's@http://archive.ubuntu.com/ubuntu@http://ftp.uni-kl.de/pub/linux/ubuntu/@' /etc/apt/sources.list
+     sudo apt-get update
+     sudo apt-get install -y python-dev python-pip
+  SHELL
+end

build/.gitignore

+*
+!.gitignore
\ No newline at end of file

docker/Dockerfile

+FROM gcc:5
+
+MAINTAINER Andreas Schmidt <schmidt@nt.uni-saarland.de>
+
+RUN apt-get update \
+    && apt-get upgrade -y \
+    && apt-get install -y cmake
+
+COPY CMakeLists.txt /prrt/
+COPY prrt /prrt/prrt
+COPY tests /prrt/tests
+COPY docker/entrypoint.sh /
+
+WORKDIR /prrt
+
+RUN cmake . \
+    && make
+ENV PATH /prrt/bin:$PATH
+WORKDIR /prrt/bin
+
+VOLUME /output
+
+ENTRYPOINT ["/entrypoint.sh"]

docker/entrypoint.sh

+#!/bin/bash
+
+dev=eth0
+
+command=$1
+shift
+
+if [[ "$command" == "sender" || "$command" == "receiver" ]]; then
+    :
+else
+    echo "Command should be either sender or receiver."
+    exit 0;
+fi
+
+NETEM=()
+PRRT=()
+while [[ $# -gt 0 ]]
+do
+key="$1"
+
+case $key in
+    -t|--target|-p|--port|-r|--rounds)
+    PRRT+=("$1 $2")
+    shift
+    shift
+    ;;
+    *)    # unknown option
+    NETEM+=("$1") # save it in an array for later
+    shift # past argument
+    ;;
+esac
+done
+
+PRRT_PARAMS="${PRRT[@]}"
+NETEM_PARAMS="${NETEM[@]}"
+
+echo "Running PRRT with command: \"$command $PRRT_PARAMS\" and link parameters: \"$NETEM_PARAMS\""
+
+tc qdisc add dev $dev root netem $NETEM_PARAMS
+/prrt/bin/$command $PRRT_PARAMS -o /output/log.csv
+tc qdisc del dev $dev root

examples/receiver.py

+import sys
+import prrt
+
+port = int(sys.argv[1])
+
+s = prrt.PrrtSocket(port=port, isSender=False)
+
+while True:
+    d = s.recv()
+    if d != "Close":
+        print d
+    else:
+        break

examples/sender.py

+import sys
+import prrt
+
+host = sys.argv[1]
+port = int(sys.argv[2])
+
+s = prrt.PrrtSocket(port=port, isSender=True)
+s.connect(host, port)
+
+for i in range(10):
+    s.send("Packet {}".format(i))
+s.send("Close")

prrt/.gitignore

+prrt.c

prrt/CMakeLists.txt

+option (DEBUG "Enable debug output.")
+
+if (DEBUG)
+    add_definitions(-DDEBUG)
+endif()
+
+option(XLAP "Run XLAP to trace packets." OFF)
+
+if (XLAP)
+    add_definitions(-DXLAP)
+endif()
+
+
+add_subdirectory(proto)
+add_subdirectory(util)
+
+add_executable(sender sender.c)
+add_executable(receiver receiver.c)
+
+target_link_libraries(sender LINK_PUBLIC PRRT UTIL ${CMAKE_THREAD_LIBS_INIT})
+target_link_libraries(receiver LINK_PUBLIC PRRT UTIL ${CMAKE_THREAD_LIBS_INIT})

prrt/__init__.py

+
+from ._version import get_versions
+__version__ = get_versions()['version']
+del get_versions

prrt/cprrt.pxd

+from libc.stdint cimport uint32_t, uint16_t, uint8_t, int32_t
+from libc.string cimport const_char
+
+cdef extern from "pthread.h" nogil:
+    ctypedef struct pthread_t:
+        pass
+
+    ctypedef struct pthread_mutex_t:
+        pass
+
+    ctypedef struct pthread_cond_t: