TsgcWebSocketServer_HTTPAPI | Send Text Response

Use the event OnHTTPRequest to handle the HTTP Requests. 

 

The class THttpServerRequest contains the HTTP Request Data.

 

• Document: the Document the peer is trying to access.
• Method: the HTTP Method ('GET', POST'...)
• Headers: the Headers of HTTP request.
• AcceptEncoding: accept encoding variable, example: "gzip, deflate, br".
• ContentType: example: "text/html"
• Content: content of request if exists.
• QueryParams: the query parameters.
• Cookies: the cookies if exists.
• ContentLength: size of the content.
• AuthExists, AuthUsername, AuthPassword: authentication request data.
• Stream: if the http request has a body, this is the stream of the body.

 

The class THttpServerResponse contains the HTTP response Data.

 

• ContentText: is the response as text.
• ContentType: example: "text/html". If you want encode the ContentText with UTF8, set the charset='utf-8'. Example: text/html; charset=utf-8
• CustomHeaders: if you need to send your own headers use this variable
• AuthRealm: if the server requires authentication, set this variable.
• ResponseNo: the HTTP response number, example: 200 means the response if correct.
• ContentStream: if the response contains a stream, set here (don't free the stream, it will be freed automatically).
• FileName: if the response is a filename, set here the full path to the filename.
• Date, Expires, LastModified: datetime variables of the response.
• CacheControl: allows to customize the cache behaviour.

 

Example: if the server receives a GET request to the document "/test.html" send a OK response, otherwise send a 404 if it's a GET request or error 500 if it's another method.

 

procedure OnHTTPRequest(aConnection: TsgcWSConnection_HTTPAPI; 
	const aRequestInfo: THttpServerRequest; 
	var aResponseInfo: THttpServerResponse);
begin
  if aRequestInfo.Method = 'GET' then
  begin
    if aRequestInfo.Document = '/test.html' then
	begin
	  aResponseInfo.ResponseNo := 200;
	  aResponseInfo.ContentText := 'OK';
	  aResponseInfo.ContentType := 'text/html; charset=UTF-8';
	end
	else
	  aResponseInfo.ResponseNo := 404;
  end
  else 
    aResponseInfo.ResponseNo := 500;
end;