i'm a new in VB and i'm trying to make a program that gets and
displays the HTTP response code of a multiple website.
something like:
http response code of target website www.example.com : 200 OK
http response code of target website www.abc2.com : 405 Method Not Allowed
http response code of target website www.testing2.com : 404 Not Found
http response code of target website www.last23.com : 408 RequestTimeout
etc.
I Tried to code it myself but i couldn't , And i also tried to find
online but i didn't found something that works.
i found this code but I think I need a loop to check multiple sites
can you help me with that? how can create loop and check status code
for multiple websites
Public Shared Function GetResponse(uri As String) As HttpStatusCode
Dim req As HttpWebRequest = WebRequest.Create(uri)
Dim resp As HttpWebResponse
Try
resp = DirectCast(req.GetResponse(), HttpWebResponse)
Catch ex As WebException
resp = DirectCast(ex.Response, HttpWebResponse)
End Try
Return resp.StatusCode
End Function
Using the GetResponse function you've already got it's quite simple
Dim sites as new List(of String)
sites.Add("www.example.com")
sites.Add("www.abc2.com")
sites.Add("www.testing2.com")
sites.Add("www.last23.com")
For Each site As String In sites
Dim siteResponse as String = GetResponse(site)
Console.WriteLine("http response code of target website " & site & " " & siteResponse)
Next
That's just off the top of my head so might have a couple gaffs in it
Related
I am trying to get eBay user tokens for my users using the identity api. I finally got it to work in Postman. Converted the call from Postman to a restsharp call from a vb.net test app. The Postman call works, the VB call returns "404 Not Found". Looked at the two calls using Fiddler. The only difference I can see is that the Postman call goes to:
"POST https://api.sandbox.ebay.com/identity/v1/oauth2/token";
and the VB app call goes to
"POST https://api.sandbox.ebay.com/identity/v1/oauth2/token/1"
It would appear that somewhere the VB app is appending "/1" to the api url. Not sure where this is occurring as I can step through the code as it executes and don't see it.
Is there a property in RestSharp that might cause this value to be appended?
EDIT added code. This code is supposed to return a user token and refresh token from eBay. It is taken pretty much from Postman with mods to work with the latest version.
Async Sub RSGetCode(sCode As String)
Dim client As RestClient = New RestClient("https://api.sandbox.ebay.com/identity/v1/oauth2/token")
Dim request As RestRequest = New RestRequest(Method.Post)
sCode = WebUtility.UrlDecode(sCode)
With request
.AddHeader("Content-Type", "application/x-www-form-urlencoded")
.AddHeader("Authorization", "Basic TXVycGh5c0MtNzYxNy00ZGRmLTk5N2ItOD..........................")
.AddParameter("grant_type", "authorization_code")
.AddParameter("code", sCode)
.AddParameter("redirect_uri", "Murphys_Creativ-Mu...........")
.AddParameter("Scope", "https://api.ebay.com/oauth/api_scope/sell.inventory")
End With
Dim responce = Await client.PostAsync(request)
'Dim responce = Await client.ExecuteAsync(request)
Dim sR As String = responce.Content
End Sub```
I got it to work by slightly reformating the code. See below.
Async Sub PostRestCode(sCode As String)
Dim client As RestClient = New RestClient("https://api.sandbox.ebay.com")
Dim request As RestRequest = New RestRequest("identity/v1/oauth2/token", Method.Post)
With request
.AddHeader("Content-Type", "application/x-www-form-urlencoded")
.AddHeader("Authorization", "Basic TXVycGh5c0MtNzYxNy00ZGRmLTk5N2ItODc2OGMzZWZkYT..............................")
.AddParameter("grant_type", "authorization_code")
.AddParameter("code", sCode) '"v^1.1#i^1#I^3#p^3#f^0#r^1#t^Ul41Xzg6NEN.......................................")
.AddParameter("redirect_uri", "Murphys_Creativ-Mu......................")
.AddParameter("Scope", "https://api.ebay.com/oauth/api_scope/sell.inventory")
End With
Dim responce = Await client.PostAsync(request)
'Dim responce = Await client.ExecuteAsync(request)
Dim sR As String = responce.Content
End Sub
Need help in solving error in HTTP GET request [closed]
I have the following code in VB.NET framework which should pull the data in json format and add it to a list view control using GET request. However I am getting following error:
System.Threading.Tasks.Task.FromResult(System.Net.Http.HttpResponseMessage)
Dim client = New HttpClient()
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", "{Subscription-Key}")
Dim uri = "https://example.com/" & SearchKey
Dim response = client.GetAsync(uri)
lstMer.Items.Add(response.ToString)
Initially I wrote the following code in VBA and it was working fine:
Dim jsonText as String
Set req = New MSXML2.ServerXMLHTTP60
key_id = "{Subscription-Key}"
key_header_name = "Subscription-Key-Id"
liveURL = "https://example.com/" & SearchKey
req.Open "GET", liveURL, False
req.setRequestHeader {Subscription-Key-Id}, {Subscription-Key}
req.setRequestHeader "Host", "site Address"
req.send
jsonText = req.responseText
The requirement is to get the headers from URL and fill a list view.
I think I understand. You don't get an error
System.Threading.Tasks.Task.FromResult(System.Net.Http.HttpResponseMessage)
rather you get that as a result of response.ToString(). This is because you are calling client.GetAsync(uri) directly, which returns a Task.FromResult<TResult>. However, it is meant to be run async, and there are some convenient keywords for achieving this, namely Async / Await. If you await the task, instead of returning a Task.FromResult<TResult>, it will return a TResult. So change your code to do just that
Private Async Sub Foo()
Dim client = New HttpClient()
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", "{Subscription-Key}")
Dim uri = "https://example.com/" & SearchKey
Dim response = Await client.GetAsync(uri)
lstMer.Items.Add(response.ToString)
End Sub
See HttpClient.GetAsync and about what it returns Task.FromResult
i'm a new in VB and i'm trying to make a program that
gets and displays the HTTP response code of a website.
something like:
http response code of target website www.example.com : 200 OK
etc.
I Tried to code it myself but i couldn't , And i also tried to find online but i didn't
found something that works.
i found this http://msdn.microsoft.com/en-us/library/system.net.httpwebresponse.statuscode(v=vs.110).aspx
i tried that and that didn't really helped me.
Anyone has a code that does that?
I'm a C# guy, so this might not be perfect, but I believe this should do it.
Public Shared Function GetResponse(uri As String) As HttpStatusCode
Dim req As HttpWebRequest = HttpWebRequest.CreateHttp(uri)
Dim resp As HttpWebResponse
Try
resp = DirectCast(req.GetResponse(), HttpWebResponse)
Catch ex As WebException
resp = DirectCast(ex.Response, HttpWebResponse)
End Try
Return resp.StatusCode
End Function
I am trying to login to one web page via my Windows Form application (VB 2010) and get some response, but I don't know how to do it.
The server service is described here:
https://api.developer.betfair.com/services/webapps/docs/display/1smk3cen4v3lu3yomq5qye0ni/Interactive+Login+from+a+Desktop+Application
On beginning I tried to insert WebBrowser Control to my form, but I read many articles, also here, that using BeforeNavigate2 event is an old way.
I would like to do this:
Send HTTP request to webserver including username and password
Catch the post data sent to the redirect URL
Read the POST request body an get loginStatus and productToken (SSOID)
This is my code:
Private Sub getPOST()
' Create a request for the URL
Dim request As WebRequest = _
WebRequest.Create("https://identitysso.betfair.com/view/login?product=82&url=https://www.betfair.com&username=abc&password=abc")
request.Method = "POST"
' Get the response
Dim response As HttpWebResponse = CType(request.GetResponse(), HttpWebResponse)
' Get the stream containing content returned by the server.
Dim dataStream As Stream = response.GetResponseStream()
' Open the stream using a StreamReader for easy access.
Dim reader As New StreamReader(dataStream)
' Read the content.
Dim responseFromServer As String = reader.ReadToEnd()
' Display the content.
RichTextBox1.Text = responseFromServer
' Cleanup the streams and the response.
reader.Close()
dataStream.Close()
response.Close()
End Sub
But this code returns HTML code of page where are not loginStatus and SSOID.
I examined this page and discovered there are a few problems with your code:
First you are posting to the wrong URL because the www.betfair.com/view/login form has action="/api/login", not "/view/login". Second, you are passing your username/password in the QueryString rather than in POSTDATA... this form uses method=post. Third, you are not passing all required fields. This code snippet should remedy these described problems, as well as answer your question about obtaining the redirect URL:
Sub TestWebClient()
' Create a request for the URL
' You were using the wrong URL & passing the values improperly
' I also changed this to HttpWebRequest, used to be WebRequest.
Dim request As HttpWebRequest = WebRequest.Create("https://identitysso.betfair.com/api/login") '
request.Method = "POST"
' New code added
request.ContentType = "application/x-www-form-urlencoded"
' New code added, this prevents the following of the 302 redirect in the Location header
request.AllowAutoRedirect = False
' New code added, this sends the values as POSTDATA, which is contained inside the HTTP POST request rather than in the URL
Using writer As New StreamWriter(request.GetRequestStream)
writer.Write("username=abc")
writer.Write("&password=abc")
writer.Write("&login=true")
writer.Write("&redirectMethod=POST")
writer.Write("&product=82")
writer.Write("&url=https://www.betfair.com/")
writer.Write("&ioBlackBox=")
End Using
' Get the response
' This will print the Location header (aka "Redirect URL") on the screen for you
' Make decisions as needed.
Dim response As HttpWebResponse = request.GetResponse()
Console.WriteLine("HTTP RESPONSE HEADERS:")
For Each item In response.Headers
Console.WriteLine(item & "=" & response.Headers(item))
Next
Console.ReadLine()
End Sub
Below is the example code I'm using to get this to work and it does work if I try to read yahoo.com.
Here is the problem. The address I need to read is a java servlet that processes parameters passed in, generates a text document on the server, and then redirects to another URL and returns the address of the text file on the server. I then need to download that text file and process it. I'm having problems connecting to the first URL with the parameters and I think it has to do with the redirect.
I'm using the WebRequest object and I've tried using the HttpWebRequest object. Are there any other objects that support redirects?
TIA
Dim reader As StreamReader
Dim request As WebRequest
Dim response As WebResponse
Dim data As String = ""
Try
request = WebRequest.Create("URL Here")
request.Timeout = 30000
response = request.GetResponse()
reader = New StreamReader(response.GetResponseStream())
data = reader.ReadToEnd()
Catch ex As Exception
MsgBox(ex.Message)
End Try
Return data
Edit
I just tested out HttpWebRequest.Create() and that does handle the 301 and 302 fine with out extra code.
Can you post the error you are seeing
You could cast the WebResponse to a HttpWebResponse:
I need to convert this to VB... but it might help you start:
var response = request.GetResponse() as HttpWebResponse;
if (response.StatusCode == HttpStatusCode.Moved || response.StatusCode == HttpStatusCode.Redirect)
{
// Follow Redirect, new request based off Redirect
}
// Read Data
I believe you just have to set the AutoRedirect property.
request.AutoRedirect = true;
webRequest = webRequest.Create(URL)
webresponse = webRequest.GetResponse()
inStream = New StreamReader(webresponse.GetResponseStream())
Read URL full source code
winston
I think I found something that will work.
I used a WebBrowser control instead.
Have a button that runs this code...
WebBrowser1.Navigate("URL Here")
And this function to process once the request returns.
Private Sub WebBrowser1_Navigated(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserNavigatedEventArgs) Handles WebBrowser1.Navigated
MsgBox(WebBrowser1.DocumentText)
End Sub