Invoking the url and adding the string to the url

[laxman]

i am developing the Windows application using VB.Net here i need to transfer some information to the my customer server and he will be replying to the information acknowledgement. for this my customer given a url and asked me to invoke the url and add the information as a string. here i dont know how to invoke this url and add string so please guide me what i should do and my customer said he will be acknowledged me with the out put i also dont know how to capture the acknowledgement i can give the url ends with ip/web/servlet so please tell me how can i do this

[PlausiblyDamp]

Without knowing exactly what format the request and response take it is a bit difficult to give any exact advice.

 

Could you show the url format / response format?

[Nate Bross]

Try something like this

 

Imports System
Imports System.IO
Imports System.Net
Module Module1 
   Sub Main()
      'Address of URL
        Dim URL As String = "http://customer.com/customerURL.ext?query=String"
       ' Get HTML data
       Dim client As WebClient = New WebClient()
       Dim data As Stream = client.OpenRead(URL)
       Dim reader As StreamReader = New StreamReader(data)
       Dim str As String = ""
       str = reader.ReadLine()
       Do While str.Length > 0
           Console.WriteLine(str)
           str = reader.ReadLine()
       Loop
       End Sub
End Module

 

Also, try this link where the above sample came from. There are additional samples available here.

 

I cannot tell from your description; however, if your customer is trying to have you use a webservice they have, all you need to do is add the URL they provide as a "Web Reference" to your application.

[laxman]

Request and Responce will be in XML formate here i am sending the details

it is a private ip http://156.0.11.27/webmethod/servelet

and i need to add XML file for the above url in this formate

<Request>

<Transaction ID>101</Transaction ID>

<User Name>LAX</User Name>

</request>

 

They will acknowledge me by this XML formate

<Acknowledge>

<Transaction ID>101</Transaction ID>

<Status>0</Status>

</Acknowledge>

 

Thank You for the reply

[PlausiblyDamp]

Is the other system a web service? If so you can add a web reference to it from the solution explorer in visual studio - that will take care of the hard work.

[Nate Bross]

If it's not a "web service" this may be useful:

 

http://www.hanselman.com/blog/HTTPPOSTsAndHTTPGETsWithWebClientAndCAndFakingAPostBack.aspx

[laxman]

i tried with the code i am getting an error The Remote Server returned an error (404) Not Found can any one tell what may be went wrong my code is

 

Dim request As WebRequest = WebRequest.Create("http://156.0.11.27:9080/Update/UpdateServlet?<RequestXml><MachineIp>10.0.0.1</MachineIp><TransactionId>110</ TransactionId ><RequestTime>24/06/2008 12:02:40 PM</RequestTime>(MM/DD/YYYY H:MI:SS)</RequestXml>")


       request.Method = "POST"
       Dim postData As String = "This is a test that posts this string to a Web server."
       Dim byteArray As Byte() = Encoding.UTF8.GetBytes(postData)
       Dim instance As New WebException
       Dim value As WebExceptionStatus
       request.ContentType = "application/x-www-form-urlencoded"
       request.ContentLength = byteArray.Length
       Dim dataStream As Stream = request.GetRequestStream()
       dataStream.Write(byteArray, 0, byteArray.Length)
       ' Close the Stream object.
       dataStream.Close()
       ' Get the response.
       value = instance.Status
       Dim response As WebResponse = request.GetResponse()
       ' Display the status.
       Console.WriteLine(CType(response, HttpWebResponse).StatusDescription)
       ' Get the stream containing content returned by the server.
       dataStream = response.GetResponseStream()

Edited June 24, 2008 by PlausiblyDamp

[PlausiblyDamp]

If you browse direct to http://156.0.11.27/webmethod/servelet what happens? A 404 result would indicate that the URL itself doesn't exist / is misspelled rather than any problem with the code itself.

 

Is the remote site expecting the xml to be appended to the url or sent as a POST or even a SOAP request?

[Nate Bross]

As PD pointed out, 404 indicates that the URL itself is incorrect.

 

 

If the URL is correct, and the page expect the data as a "POST"

 

try these modifications:

Dim request As WebRequest = _
   WebRequest.Create("http://156.0.11.27:9080/Update/UpdateServlet/")


       request.Method = "POST"
       Dim postData As String = "<RequestXml><MachineIp>10.0.0.1</MachineIp><TransactionId>110</ TransactionId ><RequestTime>24/06/2008 12:02:40 PM</RequestTime>(MM/DD/YYYY H:MI:SS)</RequestXml>"

       Dim byteArray As Byte() = Encoding.UTF8.GetBytes(postData)
       Dim instance As New WebException
       Dim value As WebExceptionStatus
       request.ContentType = "application/x-www-form-urlencoded"
       request.ContentLength = byteArray.Length
       Dim dataStream As Stream = request.GetRequestStream()
       dataStream.Write(byteArray, 0, byteArray.Length)
       ' Close the Stream object.
       dataStream.Close()
       ' Get the response.
       value = instance.Status
       Dim response As WebResponse = request.GetResponse()
       ' Display the status.
       Console.WriteLine(CType(response, HttpWebResponse).StatusDescription)
       ' Get the stream containing content returned by the server.
       dataStream = response.GetResponseStream()

[laxman]

Hai Thank You The service expecting the XML as post method and i tried with the coding It is working fine thank you for every one