public static bool HandleIfNotModified(this HttpConnection p, DateTime lastModified, string etag, string lastModifiedString)
{
if (lastModified != null)
{
p.setHeader("Last-Modified", lastModifiedString);
}
if (etag != null)
{
p.setHeader("Etag", etag);
}
//p.setHeader("Cache-Control", "public,max-age=3600");
var notmod = (etag != null && p.GetReqHeader("If-None-Match") == etag);
if (!notmod)
{
if (lastModified > DateTime.MinValue)
{
var sinceStr = p.GetReqHeader("If-Modified-Since");
if (sinceStr != null && DateTime.TryParse(sinceStr, out var since))
{
if (since <= lastModified)
{
notmod = true;
}
}
}
}
if (notmod)
{
p.ResponseStatusCode = "304 Not Modified";
}
return(notmod);
}
public static string Parse(HttpConnection p)
{
string auth = p.GetReqHeader(HttpHeaders.KEY_Authorization);
if (auth != null && auth.StartsWith("Basic"))
{
var base64str = auth.Substring(5);
return(NaiveUtils.UTF8Encoding.GetString(Convert.FromBase64String(base64str)));
}
return(null);
}
public async Task <WsHandleRequestResult> HandleRequestAsync(bool enterRecvLoop)
{
List <string> connectionSplits = p.GetReqHeaderSplits("Connection");
if (p.Method == "GET" &&
p.GetReqHeader("Upgrade") == "websocket" &&
(connectionSplits.Contains("Upgrade") || connectionSplits.Contains("upgrade")))
{
p.Handled = true;
if (p.GetReqHeader("Sec-WebSocket-Version") != "13")
{
p.ResponseStatusCode = "400 Bad Request";
p.setHeader("Sec-WebSocket-Version", "13");
return(new WsHandleRequestResult(WsHandleRequestResult.Results.BadVersion));
}
var wskey = p.GetReqHeader("Sec-WebSocket-Key");
if (wskey == null)
{
p.ResponseStatusCode = "400 Bad Request";
p.keepAlive = false;
return(new WsHandleRequestResult(WsHandleRequestResult.Results.BadKey));
}
p.ResponseStatusCode = "101 Switching Protocols";
p.setHeader("Upgrade", "websocket");
p.setHeader("Connection", "Upgrade");
p.setHeader("Sec-WebSocket-Accept", GetWebsocketAcceptKey(wskey));
p.keepAlive = false;
await p.EndResponseAsync().CAF();
p.SwitchProtocol();
ConnectionState = States.Open;
if (enterRecvLoop)
{
await recvLoopAsync().CAF();
}
return(new WsHandleRequestResult(WsHandleRequestResult.Results.Connected));
}
return(new WsHandleRequestResult(WsHandleRequestResult.Results.NonWebsocket));
}
public static bool Check(HttpConnection p)
{
var contentType = p.GetReqHeader(HttpHeaders.KEY_Content_Type);
if (contentType == null)
{
return(false);
}
if (!contentType.StartsWith("multipart/form-data;"))
{
return(false);
}
return(true);
}
private static byte[] GetBoundary(HttpConnection p)
{
const string boundary = "boundary=";
var contentType = p.GetReqHeader(HttpHeaders.KEY_Content_Type);
if (contentType == null)
{
throw new Exception("no Content-Type");
}
if (!contentType.StartsWith("multipart/form-data;"))
{
throw new Exception("!Content-Type.StartWith(\"multipart/form-data\")");
}
var boundrayIndex = contentType.IndexOf(boundary);
if (boundrayIndex == -1)
{
throw new Exception("'boundary=' not Found");
}
return(NaiveUtils.UTF8Encoding.GetBytes("--" + contentType.Substring(boundrayIndex + boundary.Length)));
}
public static bool IsWebSocketRequest(HttpConnection p) => p.GetReqHeader("Upgrade") == "websocket";
