the right way to compile and use this project

[Wzzzx]

1. Update all of the submodule, the current version of submodule has some bug.

   cd lib/rapidjson
   git pull origin master
   cd ../..
   cd lib/websocketpp
   git pull origin master
   

2. Compile boost 1.67.0

   # build debug
   ./b2 debug cflags=-fPIC  --with-system --with-date_time --with-random link=static runtime-link=shared threading=multi
   
   #build release
   ./b2 cflags=-fPIC --with-system --with-date_time --with-random link=static runtime-link=shared threading=multi
   

3. Compile OpenSSL 1.0.2u

   Just follow the INSTALL file. What you need to know is that you should use ./config -fPIC

4. build this project I change the CMakeLists.txt, just add set(CMAKE_POSITION_INDEPENDENT_CODE ON)

   # build release
   cmake -DCMAKE_CXX_FLAGS=-std=c++11 -DOPENSSL_ROOT_DIR:STRING=/usr/local/ssl -DOPENSSL_VERSION:STRING=1.0.1 -DBOOST_INCLUDEDIR=~/boost_1_67_0 -DBOOST_LIBRARYDIR=~/boost_1_67_0/stage/lib -DBOOST_VER:STRING=1.67.0 ./
   make install
   make clean
   
   #build debug
   cmake -DCMAKE_CXX_FLAGS=-std=c++11 -DCMAKE_BUILD_TYPE=Debug -DOPENSSL_ROOT_DIR:STRING=/usr/local/ssl -DOPENSSL_VERSION:STRING=1.0.1 -DBOOST_INCLUDEDIR=~/boost_1_67_0 -DBOOST_LIBRARYDIR=~/boost_1_67_0/stage/lib -DBOOST_VER:STRING=1.67.0 ./ 
   make install
   make clean
   

5. the Qt pri file should write like this

   HEADERS += \
       $$PWD/include/sio_client.h \
       $$PWD/include/sio_message.h \
       $$PWD/include/sio_socket.h
   
   INCLUDEPATH += $$PWD/include
   
   CONFIG(debug, debug|release) {
       LIBS += -L$$PWD/lib/linux/Debug
       LIBS += -lsioclient
   } else {
       DEFINES += SIO_TLS
       LIBS += -L$$PWD/lib/linux/Release
       LIBS += -lsioclient_tls -ldl -lssl -lcrypto
   }
   
   LIBS += -lboost_system -lboost_random -lboost_date_time
   

​ What you need to know is that, in release mode , you only can https/wss and you only can use http/ws in Debug mode

I didn't use the no_keywords flag, because my project has lots of submoudle, I don't want to change them. You can Use this way to using socket.io within a Qt environment.

#undef emit
#include "sio_client.h"
#define emit


sio::client web_socket;
#undef emit
    web_socket.socket()->emit(kEventname, message_list);
#define emit

[Wzzzx]

I have try boost 1.73.0 and OpenSSL 1.1.1g, all is well.

[NateShaq]

Are you testing this over http:// or https:// connections? I see that most examples point to a http://localhost? Just curious if have been able to use SSL for the socket connection historically?

[Wzzzx]

@NateShaq Yeap. If you write the pri file like I wrote before, you can use SSL in Release mode.