Winsock manually send HTTP request gives 403 Forbidden - c++

Question

I am currently trying to understand how HTTP requests work so I am using winsock2 for c++ to try and send some HTTP requests manually.
My code looks like this:
#include <iostream>
#include <SFML/Graphics.hpp>
#include "EasyWinSock.h"
char ip[] = "prnt.sc";
char port[] = "80";
int main() {
easy_win_sock ews(ip, port);
ews.init_win_sock();
ews.create_win_sock();
ews.connect_win_sock();
char sendbuf2[] = "GET /t/gh17d-1645175682/post HTTP/1.1\r\nUser-Agent: kekwtestkekw\r\nHost: ptsv2.com\r\n\r\n";
char sendbuf[] = "GET /111111 HTTP/1.1\r\nHost: www.prnt.sc\r\n\r\n";
ews.send_win_sock(sendbuf, (int)strlen(sendbuf));
DATA *result = ews.recieve_win_sock_text(512); // dynamically allocated
/*
for (int i = 0; i < result->content->size(); i++) {
std::cout << (*result->content)[i];
}
*/
ews.cleanup_win_sock();
return 0;
}
With the Winsocket tucked away in the struct:
#pragma once
#pragma comment(lib, "ws2_32.lib")
#include <iostream>
#include <vector>
#include <winsock2.h>
#include <WS2tcpip.h>
struct DATA {
std::vector<char*>* content;
int size;
};
struct easy_win_sock {
char *ip;
char *port;
WSADATA *wsaData;
addrinfo* result = nullptr;
addrinfo* ptr = nullptr;
SOCKET *sock;
easy_win_sock(char* ip, char* port) {
this->ip = ip;
this->port = port;
this->sock = new SOCKET;
this->wsaData = new WSADATA;
}
void init_win_sock() {
int i_result = WSAStartup(MAKEWORD(2, 2), wsaData);
if (i_result != 0) {
std::cout << "WASStartup failed: " << i_result << std::endl;
exit(1);
}
}
void create_win_sock() {
this->result = NULL;
this->ptr = NULL;
addrinfo hints;
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
// get ip adress of hostname
int i_result = getaddrinfo(this->ip, this->port, &hints, &this->result);
if (i_result != 0) {
std::cout << "getaddrinfo failed: " << i_result << std::endl;
WSACleanup();
exit(1);
}
// create socket
*this->sock = INVALID_SOCKET;
// Attempt to connect to the first adress returned by the call to getaddrinfo
this->ptr = this->result;
// create socket for connecting to server
*this->sock = socket(this->ptr->ai_family, this->ptr->ai_socktype, this->ptr->ai_protocol);
if (*this->sock == INVALID_SOCKET) {
std::cout << "Error at socket(): " << WSAGetLastError() << std::endl;
freeaddrinfo(this->result);
WSACleanup();
exit(1);
}
}
void connect_win_sock() {
// connect to server
int i_result = connect(*this->sock, this->ptr->ai_addr, (int)this->ptr->ai_addrlen);
if (i_result == SOCKET_ERROR) {
closesocket(*this->sock);
*this->sock = INVALID_SOCKET;
}
// if connection failed we just close everithing instead of trying other adresses from getadressinfo()
freeaddrinfo(result);
if (*this->sock == INVALID_SOCKET) {
std::cout << "Unable to connect to server!" << std::endl;
WSACleanup();
exit(1);
}
}
void send_win_sock(char* data, int buf_len) {
int i_result = send(*this->sock, data, buf_len, 0);
if (i_result == SOCKET_ERROR) {
std::cout << "Send failed: " << WSAGetLastError() << std::endl;
closesocket(*this->sock);
WSACleanup();
exit(1);
}
}
DATA* recieve_win_sock_text(int buf_size) {
std::vector<char*>* recvbufs = new std::vector<char*>;
DATA* data = new DATA;
// recieve data till server closes connection
int i_result = 1; // number of recieved bytes
while (i_result > 0) {
recvbufs->push_back(new char[buf_size]);
i_result = recv(*this->sock, (*recvbufs)[recvbufs->size() - 1], buf_size - 1, 0);
if (i_result >= 0) {
(*recvbufs)[recvbufs->size() - 1][i_result] = '\0';
std::cout << (*recvbufs)[recvbufs->size() - 1];
}
else {
std::cout << "recv failed: " << WSAGetLastError() << std::endl;
}
}
data->content = recvbufs;
return data;
}
void cleanup_win_sock() {
// shutdown the connection for sending
// still can recieve
int i_result = shutdown(*this->sock, SD_SEND);
if (i_result == SOCKET_ERROR) {
std::cout << "Shutdown failed: " << WSAGetLastError() << std::endl;
closesocket(*this->sock);
WSACleanup();
exit(0);
}
closesocket(*this->sock);
WSACleanup();
delete this->sock;
delete this->wsaData;
}
};
I am using http://ptsv2.com/ to try out my HTTP requests and on this site they work. When I however try to send a GET request to the site prnt.sc/111111 I get different Error codes depending on my GET request. When I just do a
GET /111111 HTTP/1.1
Host: prnt.sc
<empty line>
for example, I get a 403 Forbidden.
When I use the Website https://reqbin.com/ to test HTTP requests and i put in prnt.sc/111111 it generates the same request but the response it shows is 200 OK.
Can anyone help me? I'm seriously stuck here.
Thanks in advance.