How can I implement SSL protocol in my program?

[Marcone]

     /*
         Direct DropBear Dlang Injector.
         Created by Marcone (thegrapevine at email.com) in 2019.
     */

import std;
import core.thread;
import core.stdc.stdlib;

// Configuracoes.
string LISTEN_PORT = "127.0.0.1:8088";
string PAYLOAD = "GET / HTTP/1.1\r\nhost: www.bing.com\r\n\r\n";

void conecta(Socket c, int conn_number){

         writeln("\nConnection #", conn_number);
     	writeln("[#] Received Client.");

         char[8192] request;
         auto rq = c.receive(request);

         string host = 
to!string(request)[to!string(request).indexOf("CONNECT")+7..to!string(request).indexOf(":")].strip();
         ushort port = 
to!ushort(to!string(request)[to!string(request).indexOf(":")+1..to!string(request).indexOf("HTTP/")].strip());

         writeln("[-] Real request: \"", 
to!string(request[0..rq]).replace("\r\n", r"\r\n"), "\"");
         writeln("[#] Payload: \"", PAYLOAD.replace("\r\n", 
r"\r\n"), "\"");

         auto s = new Socket(AddressFamily.INET, 
SocketType.STREAM);
         s.blocking = true;
         writeln("[-] Direct connection to server: ", host, ":", 
port);
         try{
             s.connect(new InternetAddress(host, port));
         }catch(Exception){
             writeln("[!] Error when try to connect to server: ", 
host, ":", port);
         }

         s.send(PAYLOAD); // Payload.
         c.send("HTTP/1.1 200 Established\r\n\r\n");

         auto set = new SocketSet();
         char[8192] data;

         while(true){
             set.reset();
             set.add(s);
             set.add(c);
             Socket.select(set, null, null, null);

             if (set.isSet(s)){
                 // Download
                 auto got = s.receive(data);
                 if (got == 0){break;}
                 c.send(data[0 .. got]);
             } else {
                 // Upload
                 auto got = c.receive(data);
                 if (got == 0){break;}
                 s.send(data[0 .. got]);
             }
         }
         writeln("[!] Client Disconnected!");
         writeln("[!] Connection #%d Closed!".format(conn_number));
     }

     void main(){
         spawnShell("title Direct DropBear Dlang Injector && color 
47");
     	writeln("-*-*-*- Direct DropBear Dlang Injector 
-*-*-*-\nCreated by Marcone (thegrapevine at email.com) in 2019\n");

         int conn_number = 0;

     	// Listen
     	auto l = new Socket(AddressFamily.INET, SocketType.STREAM);
         try {
             l.bind(new 
InternetAddress(LISTEN_PORT[0..LISTEN_PORT.indexOf(":")], 
to!ushort(LISTEN_PORT[LISTEN_PORT.indexOf(":")+1..LISTEN_PORT.length])));
             l.blocking = true;
         } catch(Exception){
             writeln("[!] Listen Error! Listen Port ", 
LISTEN_PORT, " is alread in Use!" );
             readln();
             exit(1);
         }
         l.listen(1);
         writeln("[-] Listening on IP and Port: ", 
LISTEN_PORT[0..LISTEN_PORT.indexOf(":")], ":", 
LISTEN_PORT[LISTEN_PORT.indexOf(":")+1..LISTEN_PORT.length], 
"\n");

         while(true){
             conn_number += 1;
             task!conecta(l.accept(), 
conn_number).executeInNewThread();
         }
     }