#include <Core/Core.h>

using namespace Upp;

CONSOLE_APP_MAIN
{
	StdLogSetup(LOG_COUT|LOG_FILE);
	
	WebSocket::Trace();

		WebSocket ws;
		ws.Trace();
		LOG(GetSysTime());
		LOG(ws.GetHeaders());
		//ws.NonBlocking();		
		ws.Connect("wss://echo.websocket.org");
		if(ws.IsError()) {
			LOG("Failed to connect");
			LOG(ws.GetError());
			LOG(ws.GetErrorDesc());
			return;
		}
		Sleep(1000);
		LOG(GetSysTime());
		ws.SendText("010203");
		Sleep(1000);
		LOG("Response: ");
		LOG(ws.Receive());
		
		ws.Close();

}

03/24/2026 12:11:20
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: cs,en-US;q=0.7,en;q=0.3
Sec-WebSocket-Version: 13
Sec-WebSocket-Extensions: permessage-deflate
Connection: keep-alive, Upgrade
Pragma: no-cache
Cache-Control: no-cache
Upgrade: websocket

WS CLIENT DNS resolved
WS CLIENT Connect issued
WS CLIENT Blocking SSL handshake finished
WS CLIENT Sending connection request
WS CLIENT ERROR: Socket has been closed unexpectedly
Failed to connect
socket(668) / SSL handshake: SSL_ERROR_SSL; error:0A000126:SSL routines::unexpected eof while reading
socket(668) / SSL handshake: SSL_ERROR_SSL; error:0A000126:SSL routines::unexpected eof while reading

bool WebSocket::Connect(const String& uri_, const String& host_, bool ssl_, int port)
{
	Clear();
	
	client = true;
	redirect = 0;
	
	uri = uri_;
	host = host_;
	ssl = ssl_;
	
	if(ssl && !IsNull(host))
		socket->SSLServerNameIndication(host);

	if(socket->IsBlocking()) {
		if(!addrinfo.Execute(host, port)) {
			Error("Not found");
			return false;
		}
		LLOG("DNS resolved");
		StartConnect();
		while(opcode != READING_FRAME_HEADER) {
			Do0();
			if(IsError())
				return false;
		}
	}
	else {
		opcode = DNS;
		addrinfo.Start(host, port);
	}
	return true;
}

if(ssl && !IsNull(host))
    socket->SSLServerNameIndication(host);

Connection accepted
SSL handshake failed: socket(632) / SSL handshake: Unknown error code.
===================================================== Waiting...
Connection accepted
SSL handshake failed: socket(652) / SSL handshake: Unknown error code.