fix std::logic_err when client receive one request two times; add srcipt

my_configure.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+export PATH=$PATH:/opt/buildroot-2017.02.5/output/host/usr/bin
+
+
+./configure  CC=arm-linux-gnueabihf-gcc CXX=arm-linux-gnueabihf-g++ --host=arm-linux CPPFLAGS="-I/home/jason/lib/arm-python/include -I/home/jason/lib/libxml2/build/include/libxml2 -I/home/jason/lib/libxml2/build/include -I/home/jason/lib/boost" LDFLAGS="-L/home/jason/lib/arm-python/lib -L/home/jason/lib/libxml2/build/lib -L/home/jason/lib/boost/stage/lib" --enable-static=no --prefix=/home/jason/workspace/freeopcua/output
+
+# After configure, DO EDIT Makefile
+#   1. change LIBS
+#   2. change /usr/include/libxmle to you libxml2 include path, use: %s/\/usr....
+#   3. then do make
+
+
+# Build python ext:
+#   1. export CC=arm-linux-gnueabihf-gcc
+#   2. export LDSHARED="arm-linux-gnueabihf-gcc -shared"
+#   3. python2 setup.py build_ext --include-dirs="/home/jason/lib/boost:/home/jason/lib/arm-python/include/python2.7:/home/jason/lib/libxml2/build/include/libxml2:/home/jason/lib/libxml2/build/include" --library-dirs="/home/jason/lib/arm-python/lib:/home/jason/lib/libxml2/build/lib:/home/jason/lib/boost/stage/lib" --libraries=boost_atomic:boost_python:python2.7

python/examples/server.py

@@ -3,7 +3,7 @@
 import sys
 sys.path.append(".")
 
-from IPython import embed
+# from IPython import embed
 import opcua
 
 class SubHandler(opcua.SubscriptionHandler):
@@ -19,6 +19,7 @@ def event(self, handle, event):
     server = opcua.Server(True)
     server.set_endpoint("opc.tcp://localhost:4841/freeopcua/server/")
     server.set_server_name("FreeOpcUa Example Server")
+    server.set_uri("urn://exampleserver.freeopcua.github.io")
 
     # start the server
     server.start()

python/my_build.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+python2 setup.py clean
+rm -rf build
+export PATH=$PATH:/opt/buildroot-2017.02.5/output/host/usr/bin
+
+export CC=arm-linux-gnueabihf-gcc
+export LDSHARED="arm-linux-gnueabihf-gcc -shared"
+
+sudo cp /usr/bin/g++ /usr/bin/g++.bak
+sudo ln -sf /opt/buildroot-2017.02.5/output/host/usr/bin/arm-linux-gnueabihf-g++ /etc/alternatives/c++
+#sudo ln -sf /opt/buildroot-2017.02.5/output/host/usr/bin/arm-linux-gnueabihf-g++ /usr/bin/g++
+
+python2 setup.py build_ext --include-dirs="/home/jason/lib/boost:/home/jason/lib/arm-python/include/python2.7:/home/jason/lib/libxml2/build/include/libxml2:/home/jason/lib/libxml2/build/include" --library-dirs="/home/jason/lib/arm-python/lib:/home/jason/lib/libxml2/build/lib:/home/jason/lib/boost/stage/lib" --libraries="boost_atomic boost_python python2.7"
+
+echo "======================build done==========================="
+sudo ln -sf /usr/bin/g++ /etc/alternatives/c++
+sudo cp /usr/bin/g++.bak /usr/bin/g++
+OBJ=build/lib.linux-x86_64-2.7/opcua.so
+arm-linux-gnueabihf-strip $OBJ
+echo "======================cp to tftpboot======================="
+cp $OBJ /tftpboot
+

src/client/binary_client.cpp

@@ -983,6 +983,12 @@ class BinaryClient
         if (callbackIt == Callbacks.end())
           {
             LOG_WARN(Logger, "binary_client         | no callback found for message id: {}, handle: {}", id, header.RequestHandle);
+            /* 2019-8-22: Changed by jason416, Do clear buffer
+             *  Once we recieve a request alreay handled, buffer must BE CLEANED, otherwise there will be two packet laies in buffer.
+             *  As above, if two buffer are diffrent type request, it will cause logic_error excpetion.
+             *  SO ADD DO CLEAR buffer when wrong packet receive.
+             */
+            messageBuffer.clear();
             return;
           }