Hi,
I am new to using a web resource which is not a webservice and I am
spinning my wheels with the webrequest class.
I am trying to interact with a URI that has been given to me.
It is say www.bloggs.com/cgi-bin/thin-client"
My app gathers data and is supposed to pass this data to the URI which will
then respond with a result.
So some real basic questions.
1)They have given me a user name and password to use.
Where does this fit into the construction of the request? I thought it
might be using the NetworkCredenti al class and the CredentialCache but I
couldn't even get the basic microsoft example to work.
2) I have an example printed request which shows the header and body.
So I made an XML doc the same as the body, and tried to incorporate that
into the request using the GetRequest stream method.
I assumed that it would be rejected as I didn't have any credentials.
But it just locks up at the GetResponse
my code follows:
Thanks
Bob
WebRequest r =
WebRequest.Crea te( http://www.blogs.com//cgi-bin//thin-client);
r.Headers.Set(" Method","POST") ;
r.Headers.Set(" URI", "/cgi-bin/thin-client");
r.Headers.Set(" HTTP-version", "HTTP/1.1");
r.Headers.Set(" UserAgent", "specialagent") ; // not the real agent
r.Headers.Set(" ContentLength", "310");
r.Headers.Set(" ContentType", "applicatio n/xml");
r.Headers.Set(" Timeout", "10000");
try
{
r.Method = "POST";
Stream postStream = r.GetRequestStr eam();
FileStream f;
f = new FileStream("C:\ \testvend.xml", System.IO.FileM ode.Open);
postStream = f;
WebResponse response = r.GetResponse() ; *****LOCKS UP HERE*********
Stream streamResponse = response.GetRes ponseStream(); 6 2474
What do you mean by 'locks up'? You set the timeout property. It should
either throw an excepiton or get the response.
Thus wrote Bob, Hi, I am new to using a web resource which is not a webservice and I am spinning my wheels with the webrequest class. I am trying to interact with a URI that has been given to me. It is say www.bloggs.com/cgi-bin/thin-client" My app gathers data and is supposed to pass this data to the URI which will then respond with a result. So some real basic questions. 1)They have given me a user name and password to use. Where does this fit into the construction of the request? I thought it might be using the NetworkCredenti al class and the CredentialCache but I couldn't even get the basic microsoft example to work.
The question is what kind of authentication the server uses. Not in all cases
is NetworkCredenti al applicable.
2) I have an example printed request which shows the header and body. So I made an XML doc the same as the body, and tried to incorporate that into the request using the GetRequest stream method. I assumed that it would be rejected as I didn't have any credentials. But it just locks up at the GetResponse
my code follows: Thanks Bob WebRequest r = WebRequest.Crea te(http://www.blogs.com//cgi-bin//thin-client); r.Headers.Set(" Method","POST") ;
r.Headers.Set(" URI", "/cgi-bin/thin-client");
r.Headers.Set(" HTTP-version", "HTTP/1.1");
r.Headers.Set(" UserAgent", "specialagent") ; // not the real agent
r.Headers.Set(" ContentLength", "310");
r.Headers.Set(" ContentType", "applicatio n/xml");
r.Headers.Set(" Timeout", "10000");
Did you really care to take a look at any code sample? All of the above headers
are set through properties on HttpWebRequest, save for URI and HTTP-Version,
which aren't HTTP headers. Setting a fixed Content-Length implies that the
content is really 310 bytes long.
try
{
r.Method = "POST";
Stream postStream = r.GetRequestStr eam();
FileStream f;
f = new FileStream("C:\ \testvend.xml", System.IO.FileM ode.Open);
postStream = f;
You have to copy your data from f to postStream. Simply reassigning a variable
won't cut it ;-)
WebResponse response = r.GetResponse() ; *****LOCKS UP HERE*********
Stream streamResponse = response.GetRes ponseStream();
Wrap the calls to disposable resources in using blocks -- you don't close
your disposable resources.
Both request and response stream *must* be closed in order to avoid resource
leaks. An open request stream will block your method, because HttpWebRequest
has no clue that you're done sending data.
Cheers,
--
Joerg Jooss ne********@joer gjooss.de
Hi Andy,
The getresponse instruction executes and never returns. If you do a debugger
breakall the pointer is at the Getresponse still. I guess 'Locks up' is a
bit melodramatic.
I think my real problem is twofold.
1) I don't understand how to post an XML doc.
All of the examples show a byte array being sent.
Do you know of any examples of this?
2) Once I get the posting mechanism working (ie I am getting rejected by the
site) I need to incorporate the User / password that I have been given. Is
the NetworkCredenti al class the right mechanism for doing this?
thanks
Bob
regards
Bob
"Andy" <pp****@gmail.c om> wrote in message
news:11******** **************@ j52g2000cwj.goo glegroups.com.. . What do you mean by 'locks up'? You set the timeout property. It should either throw an excepiton or get the response.
Hi,
Joerg,
Thanks for your response.
I assure you I have looked at heaps of examples. All I have been able to
find is the sending of byte arrays
I didn't bother putting the 'closing code' in my example as it is not
relevant.
Essentially I am looking for:
1) The correct industrial strength way of posting an XML doc to a non
framework webserver.
2) The correct method of presenting my user name and password.
I have no feel for what is good coding practise in this area, and would love
to see an example of how it is done.
regards
Bob
"Joerg Jooss" <ne********@joe rgjooss.de> wrote in message
news:94******** *************** ***@msnews.micr osoft.com... Thus wrote Bob,
Hi, I am new to using a web resource which is not a webservice and I am spinning my wheels with the webrequest class. I am trying to interact with a URI that has been given to me. It is say www.bloggs.com/cgi-bin/thin-client" My app gathers data and is supposed to pass this data to the URI which will then respond with a result. So some real basic questions. 1)They have given me a user name and password to use. Where does this fit into the construction of the request? I thought it might be using the NetworkCredenti al class and the CredentialCache but I couldn't even get the basic microsoft example to work. The question is what kind of authentication the server uses. Not in all
cases is NetworkCredenti al applicable.
2) I have an example printed request which shows the header and body. So I made an XML doc the same as the body, and tried to incorporate that into the request using the GetRequest stream method. I assumed that it would be rejected as I didn't have any credentials. But it just locks up at the GetResponse
my code follows: Thanks Bob WebRequest r = WebRequest.Crea te(http://www.blogs.com//cgi-bin//thin-client); r.Headers.Set(" Method","POST") ;
r.Headers.Set(" URI", "/cgi-bin/thin-client");
r.Headers.Set(" HTTP-version", "HTTP/1.1");
r.Headers.Set(" UserAgent", "specialagent") ; // not the real agent
r.Headers.Set(" ContentLength", "310");
r.Headers.Set(" ContentType", "applicatio n/xml");
r.Headers.Set(" Timeout", "10000"); Did you really care to take a look at any code sample? All of the above
headers are set through properties on HttpWebRequest, save for URI and
HTTP-Version, which aren't HTTP headers. Setting a fixed Content-Length implies that the content is really 310 bytes long.
try
{
r.Method = "POST";
Stream postStream = r.GetRequestStr eam();
FileStream f;
f = new FileStream("C:\ \testvend.xml", System.IO.FileM ode.Open);
postStream = f; You have to copy your data from f to postStream. Simply reassigning a
variable won't cut it ;-)
WebResponse response = r.GetResponse() ; *****LOCKS UP HERE*********
Stream streamResponse = response.GetRes ponseStream(); Wrap the calls to disposable resources in using blocks -- you don't close your disposable resources.
Both request and response stream *must* be closed in order to avoid
resource leaks. An open request stream will block your method, because
HttpWebRequest has no clue that you're done sending data.
Cheers, -- Joerg Jooss ne********@joer gjooss.de
Hi,
Now working.
Thanks
bob
"Bob" <bo*@nowhere.co m> wrote in message
news:eb******** ********@tk2msf tngp13.phx.gbl. .. Hi, I am new to using a web resource which is not a webservice and I am spinning my wheels with the webrequest class. I am trying to interact with a URI that has been given to me. It is say www.bloggs.com/cgi-bin/thin-client"
My app gathers data and is supposed to pass this data to the URI which
will then respond with a result. So some real basic questions. 1)They have given me a user name and password to use. Where does this fit into the construction of the request? I thought it might be using the NetworkCredenti al class and the CredentialCache but I couldn't even get the basic microsoft example to work.
2) I have an example printed request which shows the header and body. So I made an XML doc the same as the body, and tried to incorporate that into the request using the GetRequest stream method.
I assumed that it would be rejected as I didn't have any credentials. But it just locks up at the GetResponse
my code follows: Thanks Bob
WebRequest r = WebRequest.Crea te(http://www.blogs.com//cgi-bin//thin-client);
r.Headers.Set(" Method","POST") ;
r.Headers.Set(" URI", "/cgi-bin/thin-client");
r.Headers.Set(" HTTP-version", "HTTP/1.1"); r.Headers.Set(" UserAgent", "specialagent") ; // not the real agent
r.Headers.Set(" ContentLength", "310");
r.Headers.Set(" ContentType", "applicatio n/xml");
r.Headers.Set(" Timeout", "10000");
try
{
r.Method = "POST";
Stream postStream = r.GetRequestStr eam();
FileStream f;
f = new FileStream("C:\ \testvend.xml", System.IO.FileM ode.Open); postStream = f;
WebResponse response = r.GetResponse() ; *****LOCKS UP HERE*********
Stream streamResponse = response.GetRes ponseStream();
Thus wrote Bob, Hi, Joerg, Thanks for your response. I assure you I have looked at heaps of examples. All I have been able to find is the sending of byte arrays I didn't bother putting the 'closing code' in my example as it is not relevant.
I beg to differ. A significant number of problems posted by users are simply
caused by broken or non-existing resource management. Also, using blocks
make explicit calls Close() or Dispose() unnecessary.
Essentially I am looking for: 1) The correct industrial strength way of posting an XML doc to a non framework webserver.
What's a non framework web server?
Anyway, I've posted numerous samples in this group, e.g. http://tinyurl.com/zq8y3
2) The correct method of presenting my user name and password. I have no feel for what is good coding practise in this area, and would love to see an example of how it is done.
As I said before, you have to know what kind of authentication is being used
on the server side. HTTP authentication schemes work wirh NetworkCredenti als.
Forms authentication (pretty much standard in Internet web apps) require
form fields for user name and password to be posted to the server.
Cheers,
--
Joerg Jooss ne********@joer gjooss.de This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: Keith Selbee |
last post by:
I am trying to submit data to a webpage in the form of a post and my code is
below. It is a function that takes a url and the post content as strings
and then performs the post. But as soon as I add the post data to the
headers I get an exception that just says "headers". Can anyone please help
me here? Thanks....
public string Get(string u, string c)
{
WebRequest wr = WebRequest.Create(u);
wr.Headers.Add(c);
|
by: Tony |
last post by:
Please help, I've scoured the web but cannot find an answer to this!
I want to use WebRequest to get the contents of a web page. The trouble is,
the page require you to go to a login page (using ASP - not ASP.NET), and
enter a username and password to get in.
How do I use WebRequest in this situation? I cannot find any way of
supplying the username and password. The '.Credentials' does not work because
that is only for Windows...
|
by: Tony |
last post by:
Hi all, I need some help please using WebRequest with a page that requires
you to log in through a different page.
I have a roster that is located at our internal address of
http://wfmmel01/WebETC/schedule.view.asp?. If you type this address in
directly, you are taken to a login page where you enter your username and
password. This address is
http://wfmmel01/WebETC/employee.login.asp?intErrNumber=501. The HTML for the
form looks like...
|
by: ThyRock |
last post by:
I am working on a WebRequest accessing the US Postal Service WebTools test API.
This service uses a DLL file (ShippingAPITest.dll) with a query string which
includes XML.
The web service accepts the query string with no url encoding.
I must pass the <> characters as they are in the query string.
If these characters are url encoded the service rejects the request.
This API Url is
http://testing.shippingapis.com/ShippingAPITest.dll
|
by: buran |
last post by:
Dear ASP.NET Programmers,
Please consider the intranet site with the following forms authentication
page http://localhost/database/login.aspx. The usernames and passwords are
stored in the SQL Server database. After authenticating, the users are be
able to save the generated documents (HTML output of the generated document)
when they click on a button in http://localhost/database/medicalDocs/1.aspx.
I use the following code:
Dim wReq...
| |
by: Gordon |
last post by:
I use the following code to get source HTML. The second line seems to work
when I get no response from a site. However, I want to stop the request if
it's taking more than 20 - 30 seconds. I can't seem to make it work. Please
point out the mistakes that I have. Thanks
code.............
WebRequest = WebRequest.Create(URL)
WebRequest.Timeout() = RunInfo.ConnectTimeout
WebResponse = WebRequest.GetResponse 'WEBRESPONSE IS A PUBLIC OBJECT...
|
by: kkb |
last post by:
Hello!
First, I'm sorry because of my english... I'll try to be
understandable!
I've got a strange problem using .NET 2003 C# and I haven't figured it
out for a long time. I'm implementing an application to download images
using System.NET classes (webclient, webrequest) asynchronously behind
proxy server. The reading method works like this:
System.Net.WebClient client=new System.Net.WebClient();
|
by: Jack |
last post by:
I have a WebRequest object that I use to log into a site and then post some
XML. In doing this I set the KeepAlive = true so that it maintains the
connection and does operates undo the initial login.
Is there a way to force this connection to close after I an done with it.
What happens is that I may need to post the XML in several chunks due to
size therefore I cannot set the KeepAlive to False when I post the XML and
the way the code...
|
by: eSolTec, Inc. 501(c)(3) |
last post by:
Thank you in advance for any and all assistance.
I'm trying to create a call to a web page to validate and register software.
The code I'm using is:
Private Sub OK_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles OK.Click
Dim WebRequest As HttpWebRequest
Dim instance As HttpWebRequest =...
|
by: Dave |
last post by:
string m_request = some_web_page;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(m_request );
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Which works fine, but I need to set and send a cookie with the WebRequest.
How do I do that?
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
| |
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
| |
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
|
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| |