private static HTTP1Response DoUppgrade(HTTP1Request req)
{
string value = req.HeaderLines["Upgrade"];
Console.WriteLine("Client is requesting an upgrade");
if (value.Equals("h2"))
{
// TLS
if (Server.Port != Server.HTTPS_PORT)
{
throw new Exception("H2 requested on a non secure stream"); // todo
}
Console.WriteLine("h2 requested");
return(GetResponseForUpgradeToh2());
}
else if (value.Equals("h2c"))
{
Console.WriteLine("h2c requested");
return(GetResponseForUpgradeToh2c());
}
else
{
Console.WriteLine("Unknown upgrade requested: " + value);
return(NullRequest());
}
}
internal static HTTP1Response From(HTTP1Request req)
{
if (req == null)
{
return(NullRequest());
}
switch (req.Httpv)
{
case "HTTP/1.0":
case "HTTP/1.1":
if (req.IsUpgradeTo2)
{
return(DoUppgrade(req));
}
switch (req.Type)
{
case "HEAD":
return(GetHTTP1Response(req, true));
case "GET":
return(GetHTTP1Response(req));
default:
Console.WriteLine("Method not allowed: " + req.Type);
return(new HTTP1Response(HTTP1V, "405 Method Not Allowed", null, new char[0]));
}
case "HTTP/2.0":
return(null);
default:
Console.WriteLine("HTTP version not supported: " + req.Httpv);
return(new HTTP1Response(HTTP1V, "405 Method Not Allowed", null, new char[0]));
}
}
private static HTTP1Response GetHTTP1Response(HTTP1Request req, bool headrequest = false)
{
Console.WriteLine("Responding with http/1.1...");
Dictionary <string, string> lst = new Dictionary <string, string>();
lst.Add("Server", RESPONSE_SERVER);
if (headrequest)
{
return(new HTTP1Response(HTTP1V, RESPONSE_NO_CONTENT, lst, new char[0]));
}
String file = null;
if (req.HttpUrl == "")
{
file = Path.Combine(Environment.CurrentDirectory, Server.DIR, "index.html");
}
else
{
file = Path.Combine(Environment.CurrentDirectory, Server.DIR, req.HttpUrl);
}
FileInfo fi = new FileInfo(file);
if (fi.Exists)
{
using (FileStream fs = fi.OpenRead())
{
using (BinaryReader reader = new BinaryReader(fs))
{
char[] d = new char[fs.Length];
reader.Read(d, 0, d.Length);
lst.Add("Content-Type", Mapping.MimeMap[fi.Extension]);
lst.Add("Accept-Ranges", "bytes");
lst.Add("Content-Length", d.Length.ToString());
lst.Add("Keep-Alive", "timeout=5, max=100");
lst.Add("Connection", "Keep-Alive");
return(new HTTP1Response(HTTP1V, RESPONSE_OK, lst, (headrequest)? new char[0] : d));
}
}
}
else
{
Console.WriteLine("File not found" + fi.FullName);
return(NotFound());
}
}
private async void StartReadingAsync()
{
while (Connected)
{
try
{
if (!_HttpUpgraded)
{
await ReadStreamToString((msg) => {
// a request has ben received
HTTP1Request req = new HTTP1Request(msg);
Console.WriteLine(req.ToString());
HTTP1Response res = HTTP1Response.From(req);
Console.WriteLine(res.ToString());
Task.Run(() => WriteResponse(res));
// todo vent på preface
if (req.IsUpgradeTo2) // || req.HeaderLines.Contains(new KeyValuePair<string, string>("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36")))
{
InitUpgradeToHttp2();
_streamHandler.SendFrame(new HTTP2Frame(0).AddSettingsPayload(new(ushort, uint)[0])); // connection preface
