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/* Starshatter: The Open Source Project
Copyright (c) 2021-2024, Starshatter: The Open Source Project Contributors
Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
Copyright (c) 1997-2006, Destroyer Studios LLC.
AUTHOR: John DiCamillo
OVERVIEW
========
Network Server Pump for HTTP Server
*/
#include "NetServer.h"
#include <chrono>
#include <cstdint>
#include <cstring>
#include <thread>
#include "NetHost.h"
#include "NetLayer.h"
// +-------------------------------------------------------------------+
NetServer::NetServer(std::uint16_t port, int nthreads)
: sock(true), pool(nullptr), conn(nullptr), poolsize(nthreads), err(0),
server_shutdown(false)
{
NetHost host;
addr = NetAddr(host.Address().IPAddr(), port);
sock.bind(addr);
sock.listen(3);
if (poolsize < 1) poolsize = 1;
pool = new std::thread[poolsize];
conn = new NetSock*[poolsize];
clients = new NetAddr[poolsize];
if (pool && conn && clients) {
std::memset(pool, 0, poolsize * sizeof(std::thread));
std::memset(conn, 0, poolsize * sizeof(NetSock*));
for (int i = 0; i < poolsize; i++) {
pool[i] = std::thread([=]{ Reader(i); });
}
hreader = std::thread([&]{ Listener(); });
}
}
NetServer::~NetServer()
{
if (!server_shutdown) {
server_shutdown = true;
sock.close();
}
if (hreader.joinable()) {
hreader.join();
}
if (pool && poolsize) {
for (int i = 0; i < poolsize; i++) {
if (pool[i].joinable()) {
pool[i].join();
}
delete conn[i];
conn[i] = nullptr;
}
delete [] pool;
delete [] conn;
delete [] clients;
}
}
// +--------------------------------------------------------------------+
void
NetServer::Shutdown()
{
server_shutdown = true;
}
// +--------------------------------------------------------------------+
void
NetServer::Listener()
{
while (!server_shutdown) {
NetSock* s = sock.accept(&client_addr);
while (s) {
sync.lock();
for (int i = 0; i < poolsize; i++) {
if (conn[i] == 0) {
conn[i] = s;
clients[i] = client_addr;
s = 0;
break;
}
}
sync.unlock();
// wait for a thread to become not busy
if (s)
std::this_thread::sleep_for(std::chrono::milliseconds(10));
}
}
}
// +--------------------------------------------------------------------+
void
NetServer::Reader(int index)
{
while (!server_shutdown) {
sync.lock();
NetSock* s = conn[index];
sync.unlock();
if (s) {
const int MAX_REQUEST = 4096;
Text request;
/***
*** NOT SURE WHY, BUT THIS DOESN'T WORK FOR SHIT
***
*** Setting the socket timeout to 2 seconds caused it
*** to wait for two seconds, read nothing, and give up
*** with a WSAETIMEDOUT error. Meanwhile, the client
*** immediately registered a failure (during the 2 sec
*** delay) and aborted the request.
***
s->set_timeout(2000);
Text msg = s->recv();
while (msg.length() > 0 && request.length() < MAX_REQUEST) {
request += msg;
msg = s->recv();
}
***/
request = s->recv();
if (request.length() > 0 && !s->is_closed()) {
Text response = ProcessRequest(request, clients[index]);
err = s->send(response);
if (err < 0) {
err = NetLayer::GetLastError();
}
}
sync.lock();
delete conn[index];
conn[index] = 0;
sync.unlock();
}
else {
std::this_thread::sleep_for(std::chrono::milliseconds(5));
}
}
}
// +--------------------------------------------------------------------+
Text
NetServer::ProcessRequest(Text msg, const NetAddr& addr)
{
if (msg.indexOf("GET ") == 0)
return DefaultResponse();
return ErrorResponse();
}
Text
NetServer::DefaultResponse()
{
Text response =
"HTTP/1.0 200 OK\nServer: Generic NetServer 1.0\nMIME-Version: 1.0\nContent-type: text/html\n\n";
response += "<html><head><title>Generic NetServer 1.0</title></head>\n\n";
response += "<body bgcolor=\"black\" text=\"white\">\n";
response += "<h1>Generic NetServer 1.0</h1>\n";
response += "<p>Didn't think I could do it, did ya?\n";
response += "</body></html>\n\n";
return response;
}
Text
NetServer::ErrorResponse()
{
Text response =
"HTTP/1.0 501 Not Implemented\nServer: Generic NetServer 1.0\nMIME-Version: 1.0\nContent-type: text/html\n\n";
response += "<html><head><title>Generic NetServer 1.0</title></head>\n\n";
response += "<body bgcolor=\"black\" text=\"white\">\n";
response += "<h1>Generic NetServer 1.0</h1>\n";
response += "<p>Sorry charlie... I'm not a magician.\n";
response += "</body></html>\n\n";
return response;
}
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