how to compile a websocket connection code in terminal? - c++

Question

I am trying to compile this code mentioned below.
#include "Poco/Net/HTTPRequest.h"
#include "Poco/Net/HTTPResponse.h"
#include "Poco/Net/HTTPMessage.h"
#include "Poco/Net/WebSocket.h"
#include "Poco/Net/HTTPClientSession.h"
#include <iostream>
using Poco::Net::HTTPClientSession;
using Poco::Net::HTTPRequest;
using Poco::Net::HTTPResponse;
using Poco::Net::HTTPMessage;
using Poco::Net::WebSocket;
int main(int args,char **argv)
{
HTTPClientSession cs("echo.websocket.org",80);
HTTPRequest request(HTTPRequest::HTTP_GET, "/?encoding=text",HTTPMessage::HTTP_1_1);
request.set("origin", "http://www.websocket.org");
HTTPResponse response;
try {
WebSocket* m_psock = new WebSocket(cs, request, response);
char *testStr="Hello echo websocket!";
char receiveBuff[256];
int len=m_psock->sendFrame(testStr,strlen(testStr),WebSocket::FRAME_TEXT);
std::cout << "Sent bytes " << len << std::endl;
int flags=0;
int rlen=m_psock->receiveFrame(receiveBuff,256,flags);
std::cout << "Received bytes " << rlen << std::endl;
std::cout << receiveBuff << std::endl;
m_psock->close();
} catch (std::exception &e) {
std::cout << "Exception " << e.what();
}
but it is not compiling in terminal even though i installed the poco libraries in my PC by using the following commands:
$ git clone -b master https://github.com/pocoproject/poco.git
$ cd poco
$ mkdir cmake-build
$ cd cmake-build
$ cmake ..
$ cmake --build . --config Release
$ cmake .. -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl
$ cmake .. -DCMAKE_TOOLCHAIN_FILE=/path/to/mytoolchain.cmake -DCMAKE_INSTALL_PREFIX=/path/to/target
$ sudo cmake --build . --target install
The default install location is /usr/local/ on Linux and macOS and C:\Program Files (x64)\ on Windows and can be overridden by setting the CMAKE_INSTALL_PREFIX CMake variable.
here are the errors showing after compiling it with this command in terminal::-->g++ -Wall -std=c++11 EchoRequest.cpp -o echo
where EchoRequest.cpp is the file name and echo is the i mentioned for compiled file
Here are errors showing-->
Undefined symbols for architecture arm64:
"Poco::Net::HTTPMessage::HTTP_1_1", referenced from:
_main in EchoRequest-11faf4.o
"Poco::Net::HTTPRequest::HTTP_GET", referenced from:
_main in EchoRequest-11faf4.o
"Poco::Net::HTTPRequest::HTTPRequest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
_main in EchoRequest-11faf4.o
"Poco::Net::HTTPRequest::~HTTPRequest()", referenced from:
_main in EchoRequest-11faf4.o
"Poco::Net::HTTPResponse::HTTPResponse()", referenced from:
_main in EchoRequest-11faf4.o
"Poco::Net::HTTPResponse::~HTTPResponse()", referenced from:
_main in EchoRequest-11faf4.o
"Poco::Net::HTTPClientSession::HTTPClientSession(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned short)", referenced from:
_main in EchoRequest-11faf4.o
"Poco::Net::HTTPClientSession::~HTTPClientSession()", referenced from:
_main in EchoRequest-11faf4.o
"Poco::Net::NameValueCollection::set(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
_main in EchoRequest-11faf4.o
"Poco::Net::WebSocket::receiveFrame(void*, int, int&)", referenced from:
_main in EchoRequest-11faf4.o
"Poco::Net::WebSocket::sendFrame(void const*, int, int)", referenced from:
_main in EchoRequest-11faf4.o
"Poco::Net::WebSocket::WebSocket(Poco::Net::HTTPClientSession&, Poco::Net::HTTPRequest&, Poco::Net::HTTPResponse&)", referenced from:
_main in EchoRequest-11faf4.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
any help me out with this error. I checked in online it is showing the solutions for cpp IDE's and afterr exploring I got to know it is a OS error so what to do to rectify this error.
can anyone suggest a command line for compiling it properly or any required changes that must be need to do it as per the OS.
please help me out if anyone knows the answers