refactor: change HTTP and WebSocket to use ixwebsocket

[dudantas]

Description

Replaces in-house ASIO networking with ixwebsocket for HTTP and WebSocket. Removes duplicate transport code, unifies TLS handling, and reduces platform-specific branches.
CMake now finds and links ixwebsocket (and its TLS deps via package manager).
Public client APIs stay the same. Internal implementation changes only.

Dependencies:

• Add: ixwebsocket (via vcpkg or system package), OpenSSL/Schannel as provided by ixwebsocket.
• Remove: custom ASIO-based HTTP/WS code paths.

Behavior

Actual

• Custom HTTP/WS stack is hard to maintain.
• Reconnect and TLS edge cases vary by platform.
• Windows setup is brittle and diverges from Linux/macOS.

Expected

• Stable HTTP/WS with automatic reconnect and TLS handled by the library.
• Consistent behavior on Windows, Linux, and macOS.
• Smaller code surface and faster onboarding.

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested

• Built locally with vcpkg-provided ixwebsocket.

• WebSocket echo test (open, send/receive, close).

• Reconnect test (server drop to client auto-reconnect).

• TLS handshake to a wss:// endpoint.

• Manual test against the staging server for gameplay messages.

• CI matrix on Windows, Ubuntu, macOS.

• Test A: HTTP client requests succeed and validate status/body/headers

• Test B: WebSocket connects, sends, receives, reconnects, and closes cleanly

Test Configuration:

• Server Version: n/a
• Client: otclient (this branch)
• Operating System: Windows 11 23H2, Ubuntu 22.04, macOS 14

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I checked the PR checks reports
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works

[sonarqubecloud]

Quality Gate failed

Failed conditions
31.5% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud

[kokekanon]

I was testing pr:

• Compilation vs 2022 solution
• Login http post myacc
• api myacc
• WebSocket
• updater

1) compilation

compiling by solution (vs community 2022) it is not possible to compile.
My possible solution is to add this:
bcrypt.lib;
here

otclient/vc17/settings.props

Line 20 in 1896b13

avrt.lib;

otclient/vc17/settings.props

Line 48 in 1896b13

avrt.lib;

2) solve issues 1198

I confirm that this pr solves the issue #1198 mentioned by nekiro.

test with this in terminal :

local onRecvInfo = function(message, err) pdump(message)      end       HTTP.get("https://discord.com/api/v9/invites/WBMSR4qAzF?with_counts=true", onRecvInfo)

3) crash with websocket

The only easy way I have to test websock is with vbot. I'll look for a way to reproduce the crash more easily.

>	otclient_gl_x64.exe!abort() Line 77	C++
 	otclient_gl_x64.exe!terminate() Line 58	C++
 	otclient_gl_x64.exe!FindHandler<__FrameHandler4>(EHExceptionRecord * pExcept, unsigned __int64 * pRN, _CONTEXT * pContext, _xDISPATCHER_CONTEXT * pDC, FH4::FuncInfo4 * pFuncInfo, unsigned char recursive, int CatchDepth, unsigned __int64 * pMarkerRN) Line 739	C++
 	otclient_gl_x64.exe!__InternalCxxFrameHandler<__FrameHandler4>(EHExceptionRecord * pExcept, unsigned __int64 * pRN, _CONTEXT * pContext, _xDISPATCHER_CONTEXT * pDC, FH4::FuncInfo4 * pFuncInfo, int CatchDepth, unsigned __int64 * pMarkerRN, unsigned char recursive) Line 403	C++
 	otclient_gl_x64.exe!__InternalCxxFrameHandlerWrapper<__FrameHandler4>(EHExceptionRecord * pExcept, unsigned __int64 * pRN, _CONTEXT * pContext, _xDISPATCHER_CONTEXT * pDC, FH4::FuncInfo4 * pFuncInfo, int CatchDepth, unsigned __int64 * pMarkerRN, unsigned char recursive) Line 236	C++
 	otclient_gl_x64.exe!__CxxFrameHandler4(EHExceptionRecord * pExcept, unsigned __int64 RN, _CONTEXT * pContext, _xDISPATCHER_CONTEXT * pDC) Line 306	C++
 	otclient_gl_x64.exe!__GSHandlerCheck_EH4(_EXCEPTION_RECORD * ExceptionRecord, void * EstablisherFrame, _CONTEXT * ContextRecord, _DISPATCHER_CONTEXT * DispatcherContext) Line 86	C++
 	ntdll.dll!00007fff8830796f()	Unknown
 	ntdll.dll!00007fff88216397()	Unknown
 	ntdll.dll!00007fff883072ae()	Unknown
 	KernelBase.dll!00007fff85ad66ca()	Unknown
 	otclient_gl_x64.exe!_CxxThrowException(void * pExceptionObject, const _s__ThrowInfo * pThrowInfo) Line 82	C++
 	otclient_gl_x64.exe!std::_Throw_Cpp_error(int code) Line 35	C++
 	[Inline Frame] otclient_gl_x64.exe!std::thread::join() Line 130	C++
 	[Inline Frame] otclient_gl_x64.exe!ix::WebSocket::stop(unsigned short) Line 197	C++
 	otclient_gl_x64.exe!ix::WebSocket::~WebSocket() Line 61	C++
 	[Inline Frame] otclient_gl_x64.exe!std::_Ref_count_base::_Decref() Line 1149	C++
 	[Inline Frame] otclient_gl_x64.exe!std::_Ptr_base<Creature>::_Decref() Line 1366	C++
 	[Inline Frame] otclient_gl_x64.exe!std::shared_ptr<Creature>::{dtor}() Line 1650	C++
 	[Inline Frame] otclient_gl_x64.exe!std::destroy_at(std::pair<unsigned int const ,std::shared_ptr<Creature>> * const) Line 324	C++
 	[Inline Frame] otclient_gl_x64.exe!std::_Default_allocator_traits<std::allocator<std::_List_node<std::pair<unsigned int const ,std::shared_ptr<Creature>>,void *>>>::destroy(std::allocator<std::_List_node<std::pair<unsigned int const ,std::shared_ptr<Creature>>,void *>> &) Line 734	C++
 	otclient_gl_x64.exe!std::_List_node<std::pair<unsigned int const ,std::shared_ptr<Creature>>,void *>::_Freenode<std::allocator<std::_List_node<std::pair<unsigned int const ,std::shared_ptr<Creature>>,void *>>>(std::allocator<std::_List_node<std::pair<unsigned int const ,std::shared_ptr<Creature>>,void *>> & _Ptr, std::_List_node<std::pair<unsigned int const ,std::shared_ptr<Creature>>,void *> * _Al) Line 317	C++
 	[Inline Frame] otclient_gl_x64.exe!std::list<std::pair<int const ,std::shared_ptr<ix::WebSocket>>,std::allocator<std::pair<int const ,std::shared_ptr<ix::WebSocket>>>>::_Unchecked_erase(std::_List_node<std::pair<int const ,std::shared_ptr<ix::WebSocket>>,void *> * const) Line 1425	C++
 	[Inline Frame] otclient_gl_x64.exe!std::_Hash<std::_Umap_traits<int,std::shared_ptr<ix::WebSocket>,std::_Uhash_compare<int,std::hash<int>,std::equal_to<int>>,std::allocator<std::pair<int const ,std::shared_ptr<ix::WebSocket>>>,0>>::_Erase(const int &) Line 1112	C++
 	[Inline Frame] otclient_gl_x64.exe!std::_Hash<std::_Umap_traits<int,std::shared_ptr<ix::WebSocket>,std::_Uhash_compare<int,std::hash<int>,std::equal_to<int>>,std::allocator<std::pair<int const ,std::shared_ptr<ix::WebSocket>>>,0>>::erase(const int &) Line 1136	C++
 	otclient_gl_x64.exe!Http::ws::__l2::<lambda_1>::operator()(const std::unique_ptr<ix::WebSocketMessage,std::default_delete<ix::WebSocketMessage>> & msg) Line 418	C++
 	[Inline Frame] otclient_gl_x64.exe!std::_Func_class<void,std::unique_ptr<ix::WebSocketMessage,std::default_delete<ix::WebSocketMessage>> const &>::operator()(const std::unique_ptr<ix::WebSocketMessage,std::default_delete<ix::WebSocketMessage>> &) Line 951	C++
 	otclient_gl_x64.exe!ix::WebSocket::{ctor}::__l2::<lambda>(unsigned short code, const std::string & reason, unsigned __int64 wireSize, bool remote) Line 49	C++
 	[Inline Frame] otclient_gl_x64.exe!std::_Func_class<void,unsigned short,std::string const &,unsigned __int64,bool>::operator()(unsigned short <_Args_0>, const std::string & <_Args_1>, unsigned __int64 <_Args_2>, bool <_Args_3>) Line 951	C++
 	otclient_gl_x64.exe!ix::WebSocketTransport::setReadyState(ix::WebSocketTransport::ReadyState readyState) Line 217	C++
 	otclient_gl_x64.exe!ix::WebSocketTransport::dispatch(ix::WebSocketTransport::PollResult pollResult, const std::function<void __cdecl(std::string const &,unsigned __int64,bool,enum ix::WebSocketTransport::MessageKind)> & onMessageCallback) Line 723	C++
 	otclient_gl_x64.exe!ix::WebSocket::run() Line 401	C++
 	[Inline Frame] otclient_gl_x64.exe!std::invoke(int(*)(ALCcontext *) &&) Line 1739	C++
 	otclient_gl_x64.exe!std::thread::_Invoke<std::tuple<int (__cdecl*)(ALCcontext *),ALCcontext *>,0,1>(void * _RawVals) Line 61	C++
 	otclient_gl_x64.exe!thread_start<unsigned int (__cdecl*)(void *),1>(void * const parameter) Line 97	C++
 	kernel32.dll!00007fff8707e8d7()	Unknown
 	ntdll.dll!00007fff881a8d9c()	Unknown

Possible solution ?

0001-test.patch
It's made with AI. But it works xD . I'm not good at c++.
me test

Http::ws [5] received message (119 bytes, binary=false, wireSize=119, preview='{"id":247582369,"message":["Paladin Sample","Sorcerer Sample"],"name":"Paladin Sample","topic":"list","type":"message"}')
Http::ws [5] event Message (wireSize=26)
Http::ws [5] received message (26 bytes, binary=false, wireSize=26, preview='{"type":"ping","ping":243}')
Http::wsSend [5] sending 15 bytes (readyState=OPEN buffered=0)
Http::wsSend [5] sent 15 bytes (wireSize=15 compressionError=false)
Http::ws [5] event Message (wireSize=26)