I am calling a webservice to send json data by post method. Here is the code for that:
string sample_url = "mywebservice/createsample;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(sample_url);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.CookieContainer = new CookieContainer();
CookieCollection cookcol = new CookieCollection();
cookcol.Add(cookie);
string body= json data
byte[] postBytes = Encoding.UTF8.GetBytes(body);
request.ContentLength = postBytes.Length;
Stream postStream = request.GetRequestStream();
postStream.Write(postBytes, 0, postBytes.Length);
postStream.Close();
WebResponse response = request.GetResponse();
string satus = ((HttpWebResponse)response).StatusDescription;
postStream = response.GetResponseStream();
StreamReader reader = new StreamReader(postStream);
I need to get some timestamp around this webservice request and response as the service seems quite slow. How do I put the countdown timer around this? Thanks for your response.
You can use the Stopwatch class:
Stopwatch sw = new Stopwatch();
sw.Start();
// your code to measure here
sw.Stop();
// print sw.Elapsed
Beware that you aren't testing your own network latency as well. If you are interested specifically in how long each service call takes, you should probably use a Stopwatch as per #nvoigt answer, but put this round your service implementation method.
Related
I am trying to work with a 3rd party service api . One of the methods they have brings in all records which takes a lot of time , about 9 mins ( i tried this using chrome app "Advanced Rest Client").
I have tried setting the webRequest.Timeout = 3600000;// Timeout.Infinite;
But it always comes back after maybe 2 minutes and the result contains 135 records (whereas the chrome app gets back 1050 records, which is correct #)
I am using the same parameters in both cases (i send it as POST data); so why is there difference in the results ?
I am using this code in a class library which will be used in a WPF application.
Is there a max value for timeout ?
Timeout.Infinite is setting it to '-1' , is this right ?
What are the other workarounds to get all data ?
Any help/suggestion is greatly appreciated.
Update: Adding code
HttpWebRequest webRequest = (HttpWebRequest)HttpWebRequest.Create(url);
AllDevicesList devInfo = null;
try
{
string postData = "";
foreach (string key in postParameters.Keys)
{
postData += HttpUtility.UrlEncode(key) + "="
+ HttpUtility.UrlEncode(postParameters[key]) + "&";
}
postData = postData.TrimEnd('&');
if (cookie == null)
webRequest.CookieContainer = new CookieContainer();
else
webRequest.CookieContainer = cookie;
webRequest.Timeout = 3600000;// Timeout.Infinite; // 1000000;
webRequest.KeepAlive = true;
webRequest.Method = "POST";
byte[] data = Encoding.ASCII.GetBytes(postData);
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.ContentLength = data.Length;
Stream requestStream = webRequest.GetRequestStream();
requestStream.Write(data, 0, data.Length);
WebResponse WebResp = webRequest.GetResponse();
DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(AllDevicesList));
object objResponse = jsonSerializer.ReadObject(WebResp.GetResponseStream());
devInfo = objResponse as AllDevicesList;
requestStream.Close();
WebResp.Close();
I have changed the implementation to Asynchronous and now i get all the records.
Thanks for all your responses.
I have a web service URL which has username and password authentication mode. I have to first pass the username and password, and if I am authenticated, I can upload a text or XML file onto the server. I am looking for a C# code to do the same process, but I'm unable to find it.
Any suggestions would be highly appreciated.
I am using following code-
if (!string.IsNullOrEmpty(txtfile))
{
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
request.KeepAlive = false;
request.SendChunked = true;
request.AllowAutoRedirect = true;
request.Method = "Post";
request.ContentType = "text/xml";
request.Credentials = new NetworkCredential(userName, password);
var encoder = new UTF8Encoding();
var data = encoder.GetBytes(txtfile);
request.ContentLength = data.Length;
var reqStream = request.GetRequestStream();
reqStream.Write(data, 0, data.Length);
reqStream.Close();
WebResponse response = null;
response = request.GetResponse();
var reader = new StreamReader(response.GetResponseStream());
}
You might want to try using the WebClient Class. There is a simple example about the WebClient.UploadFile Method which could fit your scenario.
How would i go about adding to the body of a HttpWebRequest?
The body needs to be made up of the following
<?xml version="1.0" encoding="utf-8"?>
<ChangeConfiguration xmlns="http://schemas.microsoft.com/windowsazure">
<Configuration>base-64-encoded-configuration-file</Configuration>
<TreatWarningsAsError>true|false</TreatWarningsAsError>
<Mode>Auto|Manual</Mode>
</ChangeConfiguration>
Any help is much appreciated
byte[] buf = Encoding.UTF8.GetBytes(xml);
request.Method = "POST";
request.ContentType = "text/xml";
request.ContentLength = buf.Length;
request.GetRequestStream().Write(buf, 0, buf.Length);
var HttpWebResponse = (HttpWebResponse)request.GetResponse();
Don't know about Azure, but here just the general outline to send data with a HttpWebRequest :
string xml = "<someXml></someXml>";
var payload = UTF8Encoding.UTF8.GetBytes(xml);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://foo.com");
request.Method = "POST";
request.ContentLength = payload.Length;
using(var stream = request.GetRequestStream())
stream.Write(payload, 0, payload.Length);
If you don't need a HttpWebRequest for some reason, using a WebClient for uploading data is much more concise:
using (WebClient wc = new WebClient())
{
var result = wc.UploadData("http://foo.com", payload);
}
My book chapter showing how to use the Windows Azure Service Management API (and create the payload) can be downloaded for free.
I've tried to login to my google app engine application from ASP.NET for a few days, but no luck. I've read the following articles and got the basic ideas. But nothing works for me.
http://code.activestate.com/recipes/577217-routines-for-programmatically-authenticating-with-/
http://dalelane.co.uk/blog/?p=303
http://dalelane.co.uk/blog/?p=894
http://krasserm.blogspot.com/2010/01/accessing-security-enabled-google-app.html
http://blog.notdot.net/2010/05/Authenticating-against-App-Engine-from-an-Android-app
I know what to do. 1) Get an auth token from ClientLogin. 2) Get a cookie from Google App Engine. 3) Post data to my app with the cookie (Yes, I want to post data, not redirect after the second part). But the third part doesn't work for me at all. It give me 403 error. Here is my code:
void PostToGAE()
{
var auth = GetAuth(); // I can get the authtoken
var cookies = GetCookies(auth); // I can get the ACSID cookie
var url = string.Format("http://test.appspot.com/do/something/");
var content = "testvalue=test";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.KeepAlive = false;
request.CookieContainer = cookies;
byte[] byteArray = Encoding.UTF8.GetBytes(content);
request.ContentLength = byteArray.Length;
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
Stream dataStream = request.GetRequestStream();
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
HttpWebResponse response = (HttpWebResponse)request.GetResponse(); // This gives me 403
Stream stream = response.GetResponseStream();
StreamReader reader = new StreamReader(stream);
string result = reader.ReadToEnd();
reader.Close();
}
CookieContainer GetCookies(string auth)
{
CookieContainer cookies = new CookieContainer();
var url = string.Format("http://test.appspot.com/_ah/login?auth={0}",
System.Web.HttpUtility.UrlEncode(auth));
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.AllowAutoRedirect = false;
request.CookieContainer = cookies;
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "GET";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream stream = response.GetResponseStream();
StreamReader reader = new StreamReader(stream);
string result = reader.ReadToEnd();
reader.Close();
return cookies;
}
string GetAuth()
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://www.google.com/accounts/ClientLogin");
var content = "Email=test#gmail.com&Passwd=testpass&service=ah&accountType=HOSTED_OR_GOOGLE";
byte[] byteArray = Encoding.UTF8.GetBytes(content);
request.ContentLength = byteArray.Length;
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
Stream dataStream = request.GetRequestStream();
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream stream = response.GetResponseStream();
StreamReader reader = new StreamReader(stream);
string loginStuff = reader.ReadToEnd();
reader.Close();
var auth = loginStuff.Substring(loginStuff.IndexOf("Auth")).Replace("Auth=", "").TrimEnd('\n');
return auth;
}
My app.yaml looks like this:
- url: /do/something/
script: something.py
login: admin
If I change the method POST to GET, that works. Could anyone tell me how I can post data?
Thanks.
EDITED:
Still no luck. I've tried several ways such as changing to [login: required] in app.yaml, adding [secure: always] to app.yaml and changing the request protocol to https, appending continue parameter to /_ah/login, but all of them don't work :(
I totally have no idea why POST doesn't work at all but GET. Any ideas?
I made it. I was on the wrong track. That was not the problem of app engine but Django. I am using Django-nonrel on google app engine, and I totally forgot to put #csrf_exempt decorator to my handler. I had the same problem before, but again. Anyway, the code above has been apparently working correctly since at the beginning. What a smart boy :)
how can i upload a large string (in my case XML with BLOB) with POST without getting Timeout with GetResponse?
Changing the timeout helps, but this isn't really a solution.
If the Server is really death or the POST was interrupted i have to wait for the extrem large timeout.
Any Idea?
HttpWebRequest webRequest = null;
string response = "";
byte[] bytes = Encoding.UTF8.GetBytes(xml);
try
{
webRequest = (HttpWebRequest)WebRequest.Create("http://" + this.host + ":" + this.port);
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.Method = "POST";
webRequest.Timeout = 5000;
webRequest.ContentLength = bytes.Length;
using (Stream requeststream = webRequest.GetRequestStream())
{
requeststream.Write(bytes, 0, bytes.Length);
requeststream.Close();
}
using (HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse())
{
using (StreamReader sr = new StreamReader(webResponse.GetResponseStream()))
{
response = sr.ReadToEnd().Trim();
sr.Close();
}
webResponse.Close();
}
}
catch(Exception ex)
{
MessageBox.Show(ex.ToString());
}
return response;
Yes, this is pretty much expected http behaviour.
Options:
have a large timeout (you've already done this), and accept that it could take a long time to legitimately time out (as opposed to taking a while because of bandwidth)
maybe you can apply gzip on the request (and tell the server you're sending it compressed); I honestly don't know if this is supported automatically, but it could certainly be done by the api explicitly checking for a particular header and applying gzip decompression on the payload
change the api to perform a number of small uploads, and a completion message
live with it