i am getting error 401 un authozied, but i am giving correct user name and password of the network user name and password of my system.
i am getting error in this line
HttpWebResponse
loWebResponse = (HttpWebResponse)loHttp.GetResponse();
[code]....
I'm currently working on making a database driven app without using SQL and instead using a simplistic web directory to store information.Unfortunately after just beginning I hit a rock wall on creating a login screen. As it works right now, every user has a directory and within that directory is file called "access" which has a password. While I'm aware that's it not secure, that's later to come, but right now I'd just like it to work. But the program uses WebRequest to see whether or not there is a directory under the given username, if there is then the username is considered valid and it moves on to check the password- where I start to have trouble. The password verification uses WebRequest and WebResponse as well, using StreamReader to read the access file. At the moment, the password checker only works once in a single program instance. Otherwise trying to check another login will cause the program to hang or freeze when declaring the WebResponse variable (resp).
This is the password verification code (with URL's removed):
Dim Username As String = My.Settings.usrUsername'The function is in a BackgroundWorker so I use My.Settings to communicate with the UI.
Dim Password As String
Dim usrPassword As String = My.Settings.usrPassword
[code]....
I tried using suggestions from other posts for this and still no resolution. When sending a POST request, at times it will just begin to freeze and stall. I set up my code as follows and now basically if I cannot figure out why it is freezing, then itneeds to timeout, handle the exception and restart the function.
For i As Integer = 0 To searchItems.Count - 1
If uri.Scheme = uri.UriSchemeHttps Then
Dim request As HttpWebRequest = HttpWebRequest.Create(url)
[code].....
Trying to POST a username & password to my PHP script at www.example.com/web-service.php which gets that info and echos true or false.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Connect to web-service
Dim hwrRequest As HttpWebRequest = HttpWebRequest.Create("http://www.example.com/web-service.php")
[code]....
Am I missing anything? It stops and throws that error on the line that calls GetResponse()?
I am having trouble with receiving bytes using HttpWebResponse.I can receive them just fine with WebClient, which I believe is just a wrapper for HttpWebResponse.Anyway, I put together some example code to re-create the situation. [code] If you just paste it into a empty Form1 and hit F5, it will create all controls automatically.I would use WebClient, but I want to get one byte at a time so I can have a detailed progress indicator, and I couldn't find any way to do that with WebClient.WebClient SendDataAsync has some serious problems where it only fires its progress update events like 3 times.Also, you will see if you press the button, it takes like 20 seconds of doing absolutely nothing, and then all of a sudden it downloads all the data in like a split second.If you press the button again and again, it only takes a split second.But the first time you push it, it takes for ever.Does anyone know why and how to fix that? [code] for the sake of all that is good and holy, don't use ACCESS, EXCEL, or a TEXT FILE as a database.If you want your program to use a "local database", without any of the hassle of setting up a MS SQL or MySQL server, just click this link: >>> SQLite <<<
View 8 RepliesI have a program that will register you for a certain website using textboxes and stuff but I have an invisible web browser and it just enters the text into the right spots and clicks the button.I was told that I can get rid of the web browser and do the whole thing faster and easier using "HttpWebRequest and HttpWebResponse".
View 2 Replieswhat method should I be using to obtain all the form input elements during an httpwebresponse?I know that posting back to them can be done via editing the response using textbox1.text...but how can I obtain the input values during my request without having to manually go behind the scenes and peek at the html code?
View 1 RepliesI`m working on some XML Https shit things and since i`m getting some Cyrillic characters i need to change the encoding of the HttpWebResponse since i`m only getting "?" i try this:
Dim objResponse As HttpWebResponse = DirectCast(objRequest.GetResponse(), HttpWebResponse)
Try
SR = New StreamReader(objResponse.GetResponseStream())
[code].....
I want to read a string that looks exactly like this:
VPSProtocol=2.22
Status=OK
StatusDetail=0000 : The Authorisation was Successful.
[code].....
I have a problem to read the binary from HttpWebResponse. The problem occur when the data is less than the buffer i predifine. It will hang in a long time when stream.Read(buffer, 0, buffer.Length) in ReadFully function.
Here is the sample code
Public Sub GetData()
Dim Buffer(1024) As Byte
Dim sHttpData As String
[Code].....
Looking for the best way to determine if a URI exists in VB.NET without downloading the actual content. System.IO.FileExists/My.Computer.FileSystem.FileExists can be used locally to determine if a file exists, is there an equivalent for the Web?
Currently I am using a HttpWebRequest to check URI existance using the ResponseStream. This populates the stream if the target does exist and throws an exception if it doesn't. The function is being expanded to also check for PDF files (typically 5MB +), images, etc and it will be a waste of time/bandwidth to actually populate the content into a stream.
In the case of "Success" (the target does exist) I do not wish to download the file or page, simply to end up with a Boolean which indicates the whether something exists at the end of this URI.
I am stuck in showing images of a requested webpage using Httpwebrequest/httpwebresponse (VB.net) classes. I can make calls to get the target webpage and display the result but it doens't show the images.
What I come to know through googling, is one way to add <base href="target webpage url"> tag in <head> section of resultant strings received through httpwebresponse and the display the modified result. For this purpose someone suggested me using Html Agility Pack.
I did some job but couldn't complete. my code snippet is as under
Dim HWR As HttpWebRequest = TryCast(WebRequest.Create("http://www.example.com"), HttpWebRequest)
Dim RequestWriter As New StreamWriter(HWR.GetRequestStream())
[Code].....
I am trying to Make a Simple Login System using files
Dim response As System.Net.HttpWebResponse = request.GetResponse()
If response.StatusCode = HttpStatusCode.NotFound Then
MsgBox("Invalid Login")
Else
My Code Here
But When I Debug it, and test it, it still gives me the 404 error. and not the popup.
Here is My Code
Try
Dim response As HttpWebResponse = request.GetResponse()
MessageBox.Show("Allgood")
Catch ex As WebException
[Code] .....
I have been used getelmentbyid in past in vb6 using webbrowser control and internetexplorer instance But in vb.net i tried to fetch webpge using the httpwebresponse Which gives the html / source in the form of sting Is it possible to fetching data by getelementbyid using httpwebresponse and httpwebrequest method ?
View 11 RepliesI want to get the SNMP Getresponse in a datagridview..I have bind an Array in the datagrid..But the problem is i m not getting any response in datagrid instead i m getting a message box that shows "No results received"..How can I get my Snmp GetResponse in a datagridView? Here is the code
Private Sub DataGridView2_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView2.CellContentClick
Dim dt As New DataTable()[code].....
I'm having a ridiculous time trying to get an SMS API working (ZeepMobile, if you're interested) with .NET... I've been around .NET for a few years, but with all this social networking and API stuff, I need to get into the HttpWebRequest a bit. I'm new at it, but not completely new; I was able to hook up my site to Twitter without too much fuss (ie, I was able to modify someone's code to work for me).
Anyways, the way their API works is to send an SMS message, you send them a POST and they respond back to you. I can send it just fine, but every time I do, rather than echo back something helpful to figure out what the error is, I get the Yellow Error Page Of Death (YEPOD) saying something to the effect of "The remote server returned an error: (400) Bad Request." This occurs on my line:
'...creation of httpwebrequest here...'
Dim myWebResponse As WebResponse
myWebResponse = request.GetResponse() '<--- error line
Is there any way to simply receive the error from the server rather than have the webserver throw an exception and give me the YEPOD?
EDIT: Here's my whole code block:
Public Shared Function SendTextMessage(ByVal username As String, _
ByVal txt As String) As String
Dim content As String = "user_id=" + _
username + "&body=" + Current.Server.UrlEncode(txt)
[code]....
I'm trying to set a near-infinite timeout value on a WebRequest, considering that the HTTP-based API which I'm querying already graciously handles timeouts by sending back an XML document that declares a timeout. For some reason though, the following code still throws an exception:
[Code].....
I'm trying to download a file using ftp and then using a streamreader to read it and write it to a text file. The problem is, when I download the file and read it, either it did not get all the data or it stops writing the data to the local file and doesnt produce any error, it just sits there. I've tried it with many different files from the ftp site and this always happens.
Private Sub Download(ByVal stateURI As String, ByVal userName As String, ByVal pWord As String)
[code].....