I realise that this is an old question. @feroze’s answer says what to do, but does not go into any detail on how to set up System.Net tracing to achieve it. As this question was the first Google result for my query into the subject, and as we are all busy people, I thought I … Read more
This takes just a tiny bit of reflection to accomplish. var a = new { data1 = “test1”, data2 = “sam”, data3 = “bob” }; var type = a.GetType(); var props = type.GetProperties(); var pairs = props.Select(x => x.Name + “=” + x.GetValue(a, null)).ToArray(); var result = string.Join(“&”, pairs);
I had to enable other security protocol versions to resolve the issue: ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12 | SecurityProtocolType.Ssl3;
You can continue using WebClient to POST (instead of GET, which is the HTTP verb you’re currently using with DownloadString), but I think you’ll find it easier to work with the (slightly) lower-level classes WebRequest and WebResponse. There are two parts to this – the first is to post the login form, the second is … Read more
“Actively refused it” means that the host sent a reset instead of an ack when you tried to connect. It is therefore not a problem in your code. Either there is a firewall blocking the connection or the process that is hosting the service is not listening on that port. This may be because it … Read more
You’ll want to take a look at the HTTP spec RFC 2616 where it says: Multiple message-header fields with the same field-name MAY be present in a message if and only if the entire field-value for that header field is defined as a comma-separated list [i.e., #(values)]. It MUST be possible to combine the multiple … Read more
Turns out, if you just want to disable certificate validation altogether, you can change the ServerCertificateValidationCallback on the ServicePointManager, like so: ServicePointManager.ServerCertificateValidationCallback = delegate { return true; }; This will validate all certificates (including invalid, expired or self-signed ones).
TL;DR a web client uses CONNECT only when it knows it talks to a proxy and the final URI begins with https://. When a browser says: CONNECT www.google.com:443 HTTP/1.1 it means: Hi proxy, please open a raw TCP connection to google; any following bytes I write, you just repeat over that connection without any interpretation. … Read more
Both the field name and the value should be url encoded. format of the post data and query string are the same The .net way of doing is something like this NameValueCollection outgoingQueryString = HttpUtility.ParseQueryString(String.Empty); outgoingQueryString.Add(“field1″,”value1”); outgoingQueryString.Add(“field2”, “value2”); string postdata = outgoingQueryString.ToString(); This will take care of encoding the fields and the value names
Is this possible using HttpWebRequest and HttpWebResponse? You could have your web server simply catch and write the exception text into the body of the response, then set status code to 500. Now the client would throw an exception when it encounters a 500 error but you could read the response stream and fetch the … Read more