I have a c++ http/https library that is meant to connect to a website and request a resource. Here are the two files:
NetworkLibrary.cpp
class Website
{
int status, sock;
struct addrinfo hints;
struct addrinfo *servinfo;
struct URL
{
std::string host;
std::string port;
};
URL url;
public:
Website(std::string url){
parseUrl(url);
memset(&hints, 0, sizeof hints);
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
if((status = getaddrinfo(Website::url.host.c_str(), Website::url.port.c_str(), &hints, &servinfo)) != 0) throw "Something wrong with getaddrinfo";
if((sock = socket(servinfo->ai_family, servinfo->ai_socktype, servinfo->ai_protocol)) == -1) throw "Something wrong with creating socket";
if((connect(sock, servinfo->ai_addr, servinfo->ai_addrlen)) != 0) throw "Error in connecting to website";
}
std::string get(std::string loc, int maxsize){
std::string request = "GET "+ loc + "
";
char * recvBuf = new char[maxsize]();
Website::sendToSite(request);
Website::recvFromSite(recvBuf, maxsize);
std::string reply(recvBuf);
return reply;
}
~Website(){
close(sock);
freeaddrinfo(servinfo);
}
private:
void sendToSite(std::string request){
if (send(sock, request.c_str(), strlen(request.c_str()), 0) == -1){
throw "Error sending message";
}
}
void recvFromSite(char buf[], int maxsize){
if (recv(sock, buf, maxsize, 0) == -1){
throw "Error receving message";
}
}
//Filles struct Website::url with host as first argument and path as second
void parseUrl(std::string url){
// Check wether url is http or https
if(url.rfind("http://", 0) == 0){
Website::url.port = "80";
Website::url.host = url.substr(7);
} else if (url.rfind("https://", 0) == 0){
Website::url.port = "443";
Website::url.host = url.substr(8);
} else {
throw "Invalid url, must start with http:// or https://";
}
}
};
On http it usually works, but when I call it like this:
./a.out https://itsfoss.com /index.html, I get this error:
<html>
<head><title>400 The plain HTTP request was sent to HTTPS port</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<center>The plain HTTP request was sent to HTTPS port</center>
<hr><center>cloudflare</center>
</body>
It seems that the problem is something to do with https, although I'm not sure what.
question from:
https://stackoverflow.com/questions/65940614/what-is-the-meaning-of-this-error-message 与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
