WCF / ASMX :: Web Service Latency / How To Measure The latency(response Round Trip Time) For a Web Service
Jun 17, 2010
I am writing a program to measure the latency(response round trip time) for a web service. I need to have this at client side.
My initial plan is to store the time at which request is sent and then calculate the difference in time when we recieve a response from the web service. Is this the correct way to measure latency of web service. This has some overhead because of storing time and all. How can this be done?
Another option is to attach a timestamp with the SOAP request. But the server should return the timestamp. This will not be possible in case of third party web services.
I need to capture the amount of time that ASP.net takes to execute each page request in my application, but I need to exclude any network latency. I am currently capturing render times by using the StopWatch class and starting the stopwatch during the OnInit method of the page lifecycle and stopping it after the Unload method completes. It seems that the Unload method includes the time it takes send the request to the client, thus including any internet/network latency. What is the last possible point I could stop the stopwatch in the Page Life Cycle that would not include the time it takes to send the request to the client. Would it be directly before the Unload event?
Related question: Does ASP.net finish building the response before it starts sending to the client? Or does it start sending asynchronously, while the response is being formed?
I am using ASP.Net 2.0 with IIS 5 currently.
I have this code in a class that all of my pages inherit from:
I tried capturing the execution time at the end of the OnRender method, at the start of the OnUnload method and at the end of the OnUnload method. In all three cases the difference in times was at most 1 millisecond. Even when testing this from a client in Europe to a server in the USA, the times were identical.
I am trying to work out how to calculate the latency of requests through a web-app (Javascript) to a .net webservice.
Currently I am essentially trying to sync both client and server time, which when hitting the webservice I can look at the offset (which would accurately show the 'up' latency.
The problem is - when you sync the time's, you have to factor in latency for that also. So currently I am timeing the sync request (round trip) and dividing by 2, in an attempt to get the 'up' latency...and then modify the sync accordingly.
This works on the assumption that latency is symmetrical, which it isn't. Does anyone know a procedure that would be able to determine specifically the up/down latency of a JS http request to a .net service? If it needs to involve multiple handshakes thats fine, what ever is as accurate as possible.
My application is hosted on IIS6.0 web server. And we observed that the initial page load time is high (30-40 sec) and further page loads take only 5sec.To bring down the page load time, I have deployed the precompiled web solution on IIS.But unfortunately the initial page load time did not came down to larger extent.
I read that webservices are basically used in backgroung. It can't be use for redirecting to some other url. Then what is meaning of following code which is from msdn. I am not able to implement this code.
Redirection If you need to provide a redirect response in your Web service, do not use the Context.Response.Redirect method because the HTTP response will differ from what the Basic Profile mandates. [R1130]
The following example shows how to give a redirect response that complies with the Basic Profile:
I am trying to simulate a sample web service payload similar to that which i will receive one the webservice is live. Can anyone help me simulate this?Criteria for my response will be:a bool pass or fail string - message and the object (in this case in the form of a list) heres the class I am to populate with sample data:
[Code]....
How can I use this class to put sample data in it? Lets say I want to put customers in the list 'ReturnObjects'?
I inherited a old WSE 3.0 service. I am building an ASP.NET client for it. It is returning a MTOM response so my client is complaining. Does anyone know of a way to change the response type to XML? Or change my client to accept MTOM? I just want this crap to work.
We have a web-service written in .net v2 which has two simple methods, Request and RequestTyped. The first of these items return a structured XML document which may include error information. The second of these methods returns and object which contain the node information of the first, but in a typed format? This service has several hundred clients and has been operational for some time.
I was wondering what the implications would be to adding an additional node to the response of both methods. Obviously the object returned by the second of these two methods will also now include this data as an additional property. What are the implications for our clients?
1)Will the additional node returned by the first method be ignored by those consuming the services that have not refreshed their WSDL?
2)Will the additional property returned by the object in the typed method break existing models which have not refreshed the WSDL?
public void UpdatePlayer(int id) { Player player = new Player() {ID = id}; player.Password = "12"; Entities.Players.Attach(player); Entities.SaveChanges(); }
If I disable javascript and cookies, [URL] detects that cookies are disabled without a redirect. If you click the cart link, there's only a get on the cart page.
I'm guessing [URL] is most likely not using ASP.NET, but how would you accomplish detecting disabled cookies using ASP.NET without the use of javascript and redirecting? Is it possible to detect if cookies are disabled in one round trip?
I have web project and class projects. one of the Class project has web reference. and i am consuming it in web project.Question: can I change class projects web reference url depending on environment DEV, Release, Test?Question: While in runtime why does not web reference's url take value from app.config?(it is taking value from Settings.settings.)
have two different applications. The only access between those two applications is Web Service.I want to delete records in the another application database by passing primary key of that table.I don't have access to database where I have to delete the records.For this, where I have to write the delete functionality.? In web service or or in my application.
I'm making a app for a bank, but it doesnt manage very important data. I have two problems, it will run over a VERY large LAN network protected by all kinds of security(antivirus and firewalls) and the bandwidth in certain regions is as low as 56kbps.(Its a desktop app with a web server backend connected by web services)
From the security point of view all I want is to prevent someone from executing the web services from some other source or app results in change in the database . I'm thinking of each desktop app installed with a install code, this will be hashed and required as a parameter for every function call and will act as an authentication ticket? Is this good enough? Are they better SIMPLER means?
For performance, how do I measure or know if the web service will send and receive data at a decent rate?
I'm looking at ways to reduce the quantity of Round Trips to my site for my clients. Right now I have several images that I think should be combined into a single image like this:
[URL]
and then spit out some CSS like this:
[URL]
... that way I can reduce the round trips and increase the speed in which my site is used (after the first load). Is there any simple tool that will do this for me? I figure it's 2010 and someone somewhere automated this. I have Visual Studio, and Expression Web and don't see it there
Is it possible to run a web service as a particular user/service account in the same way a Windows service can?I have a service account used for connecting to the DB and want to run the webservice under this account as the users using the webservice won't have DB access.The way I see to do it is to include the Impersonate option in the Web.config file, but is there any better way to do this?
How to create an instance of web service without adding web service reference? How to identify the server address/name where the web service is hosted from C# code?
My WCF Client calls my WCF Service which then calls ASMX Web Service. The problem is i have configured my wcf client and wcf service to windows credentials type but when wcf service calls asmx service the user credentials (default windowsidentity) is not passed to asmx service.
In WCF Service i am able to get user identity by using : Thread.CurrentPrincipal.Identity.Name; WCF Service - i have disabled anonymous access and enabled windows authentication. ASMX Web Service - i have disabled anonymous access and enabled windows authentication. WCF Service Config [Code]....
i have created a normal web service and i want to host it outside IIS. one idea i got is to use window service as hosting environment. i have created a web service and hosted it window service and its window service is running now.would anybody please let me know that how can i call web service hosted in window service binded over soap.tcp. here is my sample code.
