TLS Client in MSVC++ for localhost:Port - c++

Question

I have a local server which has a REST API running at https://localhost:61000, to which I can send the following Curl request:
curl -X POST "https://localhost:61000/users/logout" -H "accept: */*" -H "Locale: en"
and it would return me the following response
In MSVC++ using the WinSock and OpenSSL library I can get the response code 200 from google.com at port 443, but when I try for localhost at port 61000 I always get a HTTP/1.1 400 Bad Request
// Client
int main(int argc, char* argv[])
{
WSADATA wsadata;
if ((WSAStartup(MAKEWORD(2, 0), &wsadata)) == 0) {
cout << "-WSAStartup Initialized." << endl;
struct addrinfo hints, * res;
int sockfd;
memset(&hints, 0, sizeof hints);
hints.ai_socktype = 0;// SOCK_STREAM;
hints.ai_protocol = 0;// IPPROTO_TCP;
hints.ai_family = AF_UNSPEC;
if (getaddrinfo("localhost", "61000", &hints, &res) != 0) {
cout << "-getaddrinfo unsuccessful." << WSAGetLastError() << endl;
}
if ((sockfd = socket(res->ai_family, res->ai_socktype, res->ai_protocol)) == INVALID_SOCKET) {
cout << "-Unable to create socket." << WSAGetLastError() << endl;
}
if ((connect(sockfd, res->ai_addr, res->ai_addrlen)) != SOCKET_ERROR) {
cout << "-Connection Established." << endl;
}
cout << "-Client connected to: " << res->ai_addr << endl;
SSL_library_init();
SSLeay_add_ssl_algorithms();
SSL_load_error_strings();
const SSL_METHOD* meth = TLSv1_2_client_method();
SSL_CTX* ctx = SSL_CTX_new(meth);
ssl = SSL_new(ctx);
if (!ssl) {
printf("Error creating SSL.\n");
log_ssl();
return -1;
}
sock = SSL_get_fd(ssl);
SSL_set_fd(ssl, sockfd);
int err = SSL_connect(ssl);
if (err <= 0) {
printf("Error creating SSL connection. err=%x\n", err);
log_ssl();
fflush(stdout);
return -1;
}
printf("SSL connection using %s\n", SSL_get_cipher(ssl));
const char* request = "GET /users HTTPS/1.1\r\n\r\n";
//SendPacket
int len = SSL_write(ssl, request, strlen(request));
if (len < 0) {
int err = SSL_get_error(ssl, len);
switch (err) {
case SSL_ERROR_WANT_WRITE:
return 0;
case SSL_ERROR_WANT_READ:
return 0;
case SSL_ERROR_ZERO_RETURN:
case SSL_ERROR_SYSCALL:
case SSL_ERROR_SSL:
default:
return -1;
}
}
//RecvPacket
len = 100;
char buf[20000];
do {
len = SSL_read(ssl, buf, 100);
buf[len] = 0;
printf(buf);
} while (len > 0);
if (len < 0) {
int err = SSL_get_error(ssl, len);
if (err == SSL_ERROR_WANT_READ)
return 0;
if (err == SSL_ERROR_WANT_WRITE)
return 0;
if (err == SSL_ERROR_ZERO_RETURN || err == SSL_ERROR_SYSCALL || err == SSL_ERROR_SSL)
return -1;
}
}
else {
cout << "-WSAStartup Initialization failed." << endl;
if (WSACleanup() != 0) {
cout << "-WSACleanup Successful." << endl;
}
else {
cout << "-WSACleanup Failed." << endl;
}
}
return 0;
}
Response:
Assuming that the (HTTP) 400 Bad Request response status code indicates that the server cannot or will not process the request due to something that is perceived to be a client error, but I can not figure out how to create the request in right way.