Http Post Request Through Httpwebrequest To Forum?

Mar 19, 2010

I'm creating an app that edit a post in a ipforum with httpwebrequest and httpwebresponse in vb.net.I use fiddler2 to get the post forms.I successfully create the code to connect to the site the authentication works well and i don't found problems. But to edit a post i don't find how to do it this is the request of the site taken from fiddler:

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I have used the WinHttp.WinHttpRequest object in VB6 to make HTTP POST requests many times. It works great: .Open the URL, then .SetRequestHeader (however many are needed) and then .Send the body. The .Send method makes the actual connection and sends everything to the server at once.How to I emulate this behavior in .NET? The examples I've tried with System.Net.HttpWebRequest open a stream with .GetRequestStream() and then write the body to the stream. Unfortunately, the server is responding immediately to the .GetRequestStream method and therefore never sees the POST body.I am obviously trying to connect up some legacy stuff here, but am having a hard time Googling the problem or finding another approach in .NET.

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Insert A PICTURE Into A Forum Post - Inserting Code Into A Forum Post?

Nov 25, 2008

<edit on 10th March 2010.>

Changed thread type to QUESTION. I was then able to mark AS ANSWER the relevent post which now also immediately follows this post and so it is easier to find as suggested by forum user j2associates .

<edit> It is also my 3rd post in this thread, the 8th one up, of my posts, from the bottom ( for now ), as the forum format has changed yet again.I will leave the rest of this post( as is ) purely for historical reasons. I have been on these forums long enough to see 3 forum changes. <edit> 19th May, 2010> Link added to a video on the next line of text.

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Dec 31, 2010

I am trying to send an HTTP Request to a server using a POST method. The problem comes from the PostData, which needs to be in Bytes form to be used by the UploadData function.

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Mar 18, 2011

I am trying to write this program that logs into this website. Now I figured out how to make the http "POST" request to the specific spot on the page which returns a "Successfully logged in" afterwards but once I make a request to another part of the page, it asks me to login (I look at the source code). I have been messing with Fiddler and I compared the a POST from my webbrowser to a POST from my program. I found the following lines to be in my browser POST and not in my program post:

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I am assuming this has something to do with the cookie that I am suppose to get to be able to tell the website that I am logged in. If someone could point me in the right direction that would be great. I dont use XMLHTTPREQUEST in my program. I found it earlier on the msdn website but now I cant find a reference to it.I am also not good with term names and I just started learning VB and don't know much about cookies/HTTP requests and such, but that is why I am trying to learn.

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Oct 6, 2011

Im trying to create a software which can post into yahoogroups.I've done trying to log in yahoomail but my problem is when I am going to post in yahoogroups, I am turning back in to yahoo log in page.

Here's my code so far:

Quote:

Imports System.IO
Imports System.Net
Imports System.Text

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Aug 6, 2010

I tried this code but it shows me errors:Picture:

[Code]...

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Click and see this link if you are interested.url...Click this link to see the NEW way of how to insert a picture into a forum post.

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Nov 23, 2010

I have a device with an embedded webserver that accepts URL-based commands and queries. The device provides a user-privilege schema, so I have administrative accounts, operator accounts, and plain user accounts. Certain commands and queries require authorization via username and password to establish the privilege level available.

[Code]...

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Feb 16, 2011

I'm trying to use proxies with HTTPWebRequets and it works just fine until I try and post data. It keeps timing out for some reason. Attached is the class I use for webrequests.

Imports System.IO
Imports System.Net
Public Class EasyHttp
Public Enum HTTPMethod As Short

[code]....

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Oct 17, 2010

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Sep 9, 2010

I have create a project with four textbox, first one are for ip address, second one are for the open ports, the third one are for username and last one is for the password. So, if I use httpwebrequest, is it possible to connect to vpn server??

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Sep 8, 2009

I've an annoying ASP.NET problem:

I have a Perl script (see below), which gets the form_info variable. Now unfortunately, it's http POST, and not http GET, so Request.Querystring doesn't work...

Now I have to replace the Perl Script with an asp.net page/app, but my problem is that I cannot process the string form_info when I don't have the string... and I cannot change the http POST to a HTTP get, since it's generated by a 3rd party java applet.

# Print out a content-type for HTTP/1.0 compatibility
print "Content-type: text/html
";
#

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VS 2008 Why Won't This Httpwebrequest Post Not Work

Jan 26, 2012

i have a site that i would like to login using httpwebrequest.I have this code and added the correct part to post

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim postData As String = "u_name=" & TextBox1.Text & "&p_word=" & TextBox2.Text & "&login=Login"
Dim tempCookies As New CookieContainer
Dim encoding As New UTF8Encoding

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If i enter the wrong login info it says bad login, but if i add the correct login info, it does not login, all it does is displays the login page again?

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Nov 21, 2011

I'm trying to send some data onto a server. The data is an XML in form of string and and image encoded to base64.The problem is that the server says '404 Not Found', just as if I had an incorrect URL, but my URL is 100% correct. I can get data from the server using GET, but when I try to POST it doesn't work.I checked it in Fiddler and it first gets z 401 error (not logged in) and then the 404 error, which results in an exception.Can anybody please have a look at the below code and tell me if there is something I'm doing wrong?

vb
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click

[code].....

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Mar 26, 2012

I'm attempting to login to a cPanel using a POST Request in VB.Net. I have the correct credentials when logging in and when posting I still get an 'Unauthorized (401)' response when it should be '301' (analysed using Tamper Data Firefox Add-On). Below is my post request information and function.[code...]

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Jun 2, 2009

I'm attempting to update a legacy VB6 component (not written by me) to the .NET platform. There is one function which posts an XML string to a URL:

Function PostToUrl(ByRef psUrl, ByRef psData, Byref psResponseText, ByRef psErrorMsg, ByRef psUsername, ByRef psPassword)

On Error Resume Next
Dim objWinHTTP

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I've updated this to:

Public Function PostXml(ByVal XML As String) As Boolean

Try
Dim URL As String = My.Settings.NTSPostURL
'TODO: supply username and password! '

[CODE]...

However when I run the .NET code the server returns the error '403 Forbidden - protocol error' on the line: Using Response As HttpWebResponse = DirectCas (HTTPRequest.GetResponse(), HttpWebResponse). The VB6 code runs fine. identify any discrepancies between the two that might be causing this?

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Feb 3, 2010

I have donsome programmng in the past but am just getting back into it.I am trying to post to the following webpage. I need to fill in the "upfile" box and submit.[code]I keep getting 501 not implimented errors. I have asked my mate Google and cant find anything.

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Mar 5, 2010

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Post Multiple Files To A Web Form With Httpwebrequest?

Jul 3, 2010

I have a web form on a web page like this:

<form
method="post"
action="http://poston.domain.com/"

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VS 2008 Post This Data To A Form Using Httpwebrequest?

Jan 24, 2012

I can grab info from a website uing httpwebrequest but i don't know how to post to a form :/Ive always used a webbrowser for this but its a tad slow.Here is what i use with a webbrowser:

Dim DBSplit() As String = Split(TextBox5.Text, "/")
WebBrowser1.Document.GetElementById("email").SetAttribute("value", TextBox1.Text)
WebBrowser1.Document.GetElementById("Pwd").SetAttribute("value", TextBox6.Text)

[code]....

How would i post this data to a form using httpwebrequest?

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VS 2010 Post Data With System.Net.HTTPWebRequest?

Jun 30, 2010

vbnet
Public Class zWrapper
#Region " Variable Declaration "
Private _AllowRedirects = True, _UseGZIP As Boolean = True

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It works fine for GET requests, but when I try a POST, it errors: Quote:

A first chance exception of type 'System.NullReferenceException' occurred in WindowsApplication1.exe
Request Error: Object reference not set to an instance of an object.

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Apr 1, 2011

I am writing a .NET program which will run on a computer with several IP addresses. The program makes HTTP requests to given web addresses. I want to choose which IP address I use (so I can determine which IP address will appear on the log of the other server).

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Jun 17, 2011

Is there any way we could get directly say the 1000 characters after the first 5000 characters, skipping everything before that after sending in an HTTP request to an HTTPS page using either GET or POST in VB.NET? The reason why I ask this question is because in one of the webpage I am trying the get through my program, the website is sending response data in chunks with the first chunk containing some javascript garbage that I have no interest in, the only data I care is in the second chunk and

how to get the second chunk after receiving the first one since it is within the same HTTP request.It would save some time and Internet traffic if I can skip the first chunk that I do not need.Is that possible or I am just day dreaming?

ADDED: Here is how a typical header of the response I am getting from the webpage I am trying to get:

Date: Mon, 20 Jun 2011 13:21:56 GMT
Set-Cookie: JSESSIONID=1AF1AF9EF936E1CB2FA85B750EDC67C4; Path=****some path******; Secure
Content-Type: text/html; charset=ISO-8859-1[code].....


Not sure if that helps, but as you can see, the chunk size is not visible to me, there is no "Trailer" in the header as well.

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