Develop Reference

Android HttpListener using SSL?

I'm developing a android app that hosts a web server using the HttpListener class.
But i need to host it using a SSL certificate, I have read somewhere that you need to place the certificate in a special directory on the android device.
But i have lost the link that specified exactly where.
So does any one know how to get HTTPS to work on Xamarin Android with the HttpListener class?
Edit:
I have tired to store a .cer and .pvk file under Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), ".mono", "httplistener") as suggested in HttpListener with HTTPS on MonoTouch but when i try to access the url i get no answer, if i change to http i at least get a answer.
I found the following source code on github, https://github.com/mono/mono/blob/3f779475e3fc982e312212d5dbbd86515eddfc0c/mcs/class/System/System.Net/HttpListener.Mono.cs#L73
But it just eats any exception that occures so there is no way to figure out if anything goes wrong!

You've not indicated what you're calling the file itself, looking at the mono code for System.Net.HttpListener the file itself must be {port number}.cer, i.e. 443.cer if you were to listen on 443.
string dirname = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
string path = Path.Combine(dirname, ".mono");
path = Path.Combine(path, "httplistener");
string cert_file = Path.Combine(path, String.Format("{0}.cer", port));
https://github.com/mono/mono/blob/3f779475e3fc982e312212d5dbbd86515eddfc0c/mcs/class/System/System.Net/HttpListener.Mono.cs#L64

BizTalk Static send ports changing the address(URI) using WMI script or updating in bts_sendport_transport not working

I am trying to change the static send port URI from BizTalk admin console by opening the configuration, I am able to do change the URI.
But if I do the send port URIchange using WMI script in c# or directly update on bts_sendport_transport, it changes the URI in database and the change appears in the send port list also.
Bur when I open the MQ configuration, I can still find the old URI in MQ definition.
Can any one please help me to change the MQ definition in send ports without using admin console?

I think your approach to the problem is wrong they invernted dynamic ports for your problem. since your question not clear enough may be I don't understand your problem clearly.
Here is link for Dynamic Ports and Usage http://www.codeproject.com/Articles/502425/BizTalk-Static-and-Dynamic-FTP-Send-Port-Sample
you must focus on last part
Msg_DynamicSend(FTP.CommandLogFileName) = "D:\\BiztalkLogs\\FTPLog\\DynamicFTPLog.txt";
Msg_DynamicSend(FTP.UserName) = "FTPUSER";
Msg_DynamicSend(FTP.Password) = "Pass1234";
Msg_DynamicSend(FTP.SpoolingFolder) = "/IN/";
Msg_DynamicSend(FTP.RepresentationType) = "ASCII";
DynSendPort(Microsoft.XLANGs.BaseTypes.Address)= "ftp://inhydeshrilata";
DynSendPort(Microsoft.XLANGs.BaseTypes.TransportType) = "FTP"

.NET HttpClient Connect To Web Service through VPN

I have an application that needs to communicate with a web server hosted on an external provider. It's been configured to only allow incoming connections from IP addresses that it recognizes.
If I needed to connect when I was working remotely and connected through VPN, I would add routes through a terminal window like sudo route -n add -net 22.222.222.22/32 192.168.133.1
I don't want every user that works remotely to have to do this. Can I do something in the application layer to allow a user that connected through the VPN to connect to the remote web server and use the VPN tunnel? It is a C# Winforms application.

I'm assuming all of the users of your app are behind the same firewall? If that's the case, then your network admin should be able to setup the routing for you either on the router directly or on your NAT server. It's also worth noting that, at least at my company, we've always had to add the routing statements twice - one for internal and one for outside over VPN. It would be a massive security vulnerability if an app could modify your computer's routing table so I wouldn't do that.
One more thought - it's possible that your VPN uses a common feature called split tunneling which means that all destinations behind your firewall would go over VPN (and have the associated routing rules applied), but any destinations outside (such as your external provider) are split and instead go straight out without any routing. The only way around this would be to setup a VPN tunnel between your firewall and your external provider (e.g. at my company we've done this with our cloud servers so they are accessible over VPN).
http://en.wikipedia.org/wiki/Split_tunneling

I could discern in your comments, that you are trying to add a route in a windows environment, but only found a command that works on linux?!
But I actually don't get your drift, and what the result of your application should be.
First of all I'll try to help you adding a route to your routing table with C# on a windows machine. (Server-sided)
I've created a little WinForm with a Button-Control btnAddRoute and a Textbox-Control textBox1 to give you an example:
Adding routes only works as administrator btw
private void btnAddRoute_Click(object sender, EventArgs e)
{
// route -p add xxx.xxx.xxx.xxx mask 255.255.0.0 xxx.xxx.xxx.xxx
string netIp = "22.222.222.22";
string mask = "255.255.255.255";
string exitIp = "192.168.133.1";
string arg = String.Format("-p add {0} mask {1} {2}", netIp, mask, exitIp);
Process p = new Process
{
StartInfo =
{
UseShellExecute = false,
FileName = "route",
Arguments = arg,
RedirectStandardOutput = true,
StandardOutputEncoding = Encoding.ASCII
}
};
p.Start();
textBox1.Text = p.StandardOutput.ReadToEnd();
}
This adds a route with the specified IP's to your routing table, and returns OK! or Failed! depending on if the action was successfully or not.
Is this more or less what you want? Or did I totally amiss?

how to redirect twitter app's call bak url to localhost? [duplicate]

Is anyone else having a difficult time getting Twitters oAuth's callback URL to hit their localhost development environment.
Apparently it has been disabled recently. http://code.google.com/p/twitter-api/issues/detail?id=534#c1
Does anyone have a workaround. I don't really want to stop my development

Alternative 1.
Set up your .hosts (Windows) or etc/hosts file to point a live domain to your localhost IP. such as:
127.0.0.1 xyz.example
where xyz.example is your real domain.
Alternative 2.
Also, the article gives the tip to alternatively use a URL shortener service. Shorten your local URL and provide the result as callback.
Alternative 3.
Furthermore, it seems that it works to provide for example http://127.0.0.1:8080 as callback to Twitter, instead of http://localhost:8080.

I just had to do this last week. Apparently localhost doesn't work but 127.0.0.1 does Go figure.
This of course assumes that you are registering two apps with Twitter, one for your live www.mysite.example and another for 127.0.0.1.

Just put http://127.0.0.1:xxxx/ as the callback URL, where xxxx is the port for your framework

Yes, it was disabled because of the recent security issue that was found in OAuth. The only solution for now is to create two OAuth applications - one for production and one for development. In the development application you set your localhost callback URL instead of the live one.

Callback URL edited
http://localhost:8585/logintwitter.aspx
Convert to
http://127.0.0.1:8585/logintwitter.aspx

This is how i did it:
Registered Callback URL:
http://127.0.0.1/Callback.aspx
OAuthTokenResponse authorizationTokens =
OAuthUtility.GetRequestToken(ConfigSettings.getConsumerKey(),
ConfigSettings.getConsumerSecret(),
"http://127.0.0.1:1066/Twitter/Callback.aspx");
ConfigSettings:
public static class ConfigSettings
{
public static String getConsumerKey()
{
return System.Configuration.ConfigurationManager.AppSettings["ConsumerKey"].ToString();
}
public static String getConsumerSecret()
{
return System.Configuration.ConfigurationManager.AppSettings["ConsumerSecret"].ToString();
}
}
Web.config:
<appSettings>
<add key="ConsumerKey" value="xxxxxxxxxxxxxxxxxxxx"/>
<add key="ConsumerSecret" value="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"/>
</appSettings>
Make sure you set the property 'use dynamic ports' of you project to 'false' and enter a static port number instead. (I used 1066).
I hope this helps!

Use http://smackaho.st
What it does is a simple DNS association to 127.0.0.1 which allows you to bypass the filters on localhost or 127.0.0.1 :
smackaho.st. 28800 IN A 127.0.0.1
So if you click on the link, it will display you what you have on your local webserver (and if you don't have one, you'll get a 404). You can of course set it to any page/port you want :
http://smackaho.st:54878/twitter/callback

I was working with Twitter callback url on my localhost. If you are not sure how to create a virtual host ( this is important ) use Ampps. He is really cool and easy. In a few steps you have your own virtual host and then every url will work on it. For example:
download and install ampps
Add new domain. ( here you can set for example twitter.local) that means your virtual host will be http://twitter.local and it will work after step 3.
I am working on Win so go under to your host file -> C:\Windows\System32\Drivers\etc\hosts and add line: 127.0.0.1 twitter.local
Restart your Ampps and you can use your callback. You can specify any url, even if you are using some framework MVC or you have htaccess url rewrite.
Hope This Help!
Cheers.

Seems nowadays http://127.0.0.1 also stopped working.
A simple solution is to use http://localtest.me instead of http://localhost it is always pointing to 127.0.0.1 And you can even add any arbitrary subdomain to it, and it will still point to 127.0.0.1
See Website

When I develop locally, I always set up a locally hosted dev name that reflects the project I'm working on. I set this up in xampp through xampp\apache\conf\extra\httpd-vhosts.conf and then also in \Windows\System32\drivers\etc\hosts.
So if I am setting up a local dev site for example.com, I would set it up as example.dev in those two files.
Short Answer: Once this is set up properly, you can simply treat this url (http://example.dev) as if it were live (rather than local) as you set up your Twitter Application.
A similar answer was given here: https://dev.twitter.com/discussions/5749
Direct Quote (emphasis added):
You can provide any valid URL with a domain name we recognize on the
application details page. OAuth 1.0a requires you to send a
oauth_callback value on the request token step of the flow and we'll
accept a dynamic locahost-based callback on that step.
This worked like a charm for me. Hope this helps.

It can be done very conveniently with Fiddler:
Open menu Tools > HOSTS...
Insert a line like 127.0.0.1 your-production-domain.com, make sure that "Enable remapping of requests..." is checked. Don't forget to press Save.
If access to your real production server is needed, simply exit Fiddler or disable remapping.
Starting Fiddler again will turn on remapping (if it is checked).
A pleasant bonus is that you can specify a custom port, like this:
127.0.0.1:3000 your-production-domain.com (it would be impossible to achieve this via the hosts file). Also, instead of IP you can use any domain name (e.g., localhost).
This way, it is possible (but not necessary) to register your Twitter app only once (provided that you don't mind using the same keys for local development and production).

edit this function on TwitterAPIExchange.php at line #180
public function performRequest($return = true)
{
if (!is_bool($return))
{
throw new Exception('performRequest parameter must be true or false');
}
$header = array($this->buildAuthorizationHeader($this->oauth), 'Expect:');
$getfield = $this->getGetfield();
$postfields = $this->getPostfields();
$options = array(
CURLOPT_HTTPHEADER => $header,
CURLOPT_HEADER => false,
CURLOPT_URL => $this->url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_SSL_VERIFYPEER => false,
CURLOPT_SSL_VERIFYHOST => false
);
if (!is_null($postfields))
{
$options[CURLOPT_POSTFIELDS] = $postfields;
}
else
{
if ($getfield !== '')
{
$options[CURLOPT_URL] .= $getfield;
}
}
$feed = curl_init();
curl_setopt_array($feed, $options);
$json = curl_exec($feed);
curl_close($feed);
if ($return) { return $json; }
}

I had the same challenge and I was not able to give localhost as a valid callback URL. So I created a simple domain to help us developers out:
https://tolocalhost.com
It will redirect any path to your localhost domain and port you need. Hope it can be of use to other developers.

set callbackurl in twitter app : 127.0.0.1:3000
and set WEBrick to bind on 127.0.0.1 instead of 0.0.0.0
command : rails s -b 127.0.0.1

Looks like Twitter now allows localhost alongside whatever you have in the Callback URL settings, so long as there is a value there.

I struggled with this and followed a dozen solutions, in the end all I had to do to work with any ssl apis on local host was:
Go download: cacert.pem file
In php.ini * un-comment and change:
curl.cainfo = "c:/wamp/bin/php/php5.5.12/cacert.pem"
You can find where your php.ini file is on your machine by running php --ini in your CLI
I placed my cacert.pem in the same directory as php.ini for ease.

These are the steps that worked for me to get Facebook working with a local application on my laptop:
goto apps.twitter.com
enter the name, app description and your site URL
Note: for localhost:8000, use 127.0.0.1:8000 since the former will not work
enter the callback URL matching your callback URL defined in TWITTER_REDIRECT_URI your application
Note: eg: http://127.0.0.1/login/twitter/callback (localhost will not work).
Important enter both the "privacy policy" and "terms of use" URLs if you wish to request the user's email address
check the agree to terms checkbox
click [Create Your Twitter Application]
switch to the [Keys and Access Tokens] tab at the top
copy the "Consumer Key (API Key)" and "Consumer Secret (API Secret)" to TWITTER_KEY and TWITTER_SECRET in your application
click the "Permissions" tab and set appropriately to "read only", "read and write" or "read, write and direct message" (use the least intrusive option needed for your application, for just and OAuth login "read only" is sufficient
Under "Additional Permissions" check the "request email addresses from users" checkbox if you wish for the user's email address to be returned to the OAuth login data (in most cases check yes)

Get original url without non-standard port (C#)

First question!
Environment
MVC, C#, AppHarbor.
Problem
I am calling an openid provider, and generating an absolute callback url based on the domain.
On my local machine, this works fine if I hit http://localhost:12345/login
Request.Url; //gives me `http://localhost:12345/callback`
However, on AppHarbor where I'm deploying, because they are using non-standard ports, even if I'm hitting it at "http://sub.example.com/login"
Request.Url; //gives me http://sub.example.com:15232/callback
And this screws up my callback, because the port number wasn't in the original source url!
I've tried
Request.Url
Request.Url.OriginalString
Request.RawUrl
All gives me "http://sub.example.com:15232/callback".
Also to clear up that this isn't a Realm issue, the error message I am getting from DotNetOpenAuth is
'http://sub.example.com:14107/accounts/openidcallback' not under realm 'http://*.example.com/'.
I don't think I've stuffed that up?
Now, I'm about to consider some hacky stuff like
preprocessor commands (#IF DEBUG THEN PUT PORT)
string replace (Request.URL.Contains("localhost"))
All of these are not 100% solutions, but I'm sick of mulling over what could be a simple property that I am missing. I have also read this but that doesn't seem to have an accepted answer (and is more about the path rather than the authority). So I'm putting it towards you guys.
Summary
So if I had http://localhost:12345/login, I need to get http://localhost:12345/callback from the Request context.
And if I had "http://sub.example.com/login", I should get "http://sub.example.com/callback", regardless of what port it is on.
Thanks! (Sleep time, will answer any questions in the morning)

This is a common problem in load balanced setups like AppHarbor's - we've provided an example workaround.
Update: A more desirable solution for many ASP.NET applications may be to set the aspnet:UseHostHeaderForRequestUrl appSetting to true. We (AppHarbor) have seen several customers experience issues using it with their WCF apps, which is why we haven't enabled it by default and stil recommend the above solution for those situations. You can configure it using AppHarbor's "Configuration Variables" to inject the appsettings when deployed. More information can be found in this article.

I recently ran into an issue where I compared a URL to the current URL, and then highlighted navigation based on that. It worked locally, but not in production.
I had http://example.com/path/to/file.aspx as my file, but when viewing that file and running Request.Url.ToString() it produced https://example.com:81/path/to/file.aspx in a load balanced production environment.
Now I am using Request.Url.AbsolutePath to just give me /path/to/file.aspx, thus ignoring the schema, hostname, and port numbers.
When I need to compare it to the URL on each navigation item I used:
New Uri(theLink.Href).AbsolutePath

My initial thoughts are get the referrer variable and check if that includes a port, if so use it otherwise don't.
If that’s not an option because a proxy might remove the referrer header variable then you might need to use some client side script to get the location and pass it back to the server.
I'm guessing that AppHarbor use port forwarding to the IIS server so even though publicly the site is on port 80 IIS has it hosted on another port so it can't know what port the client connected on.

Something like
String port = Request.ServerVariables["SERVER_PORT"] == "80" ? "" : ":" + Request.ServerVariables["SERVER_PORT"];
String virtualRoot = Url.Content("~/");
destinationUrl = String.Format("http://{0}{1}{2}", Request.ServerVariables["SERVER_NAME"], port + virtualRoot, "/callback");

If you use the UrlBuilder class in the framework you can easly get around this. On the builder class if you set the port to -1 then the port number will be removed:
new UriBuilder("http://sub.example.com:15232/callback"){ Port = -1}
returns : http://sub.example.com/callback
To keep the port number on a local machine just check Request.IsLocal and don't apply -1 to the port.
I would wrap this into a extension method to keep it clean.

I see that this is an old thread. I had this issue running MVC5, on IIS 7.5, with an Apache proxy in front. Outside of the server, I would get "Empty Response", since the asp.net app gets the Url from apache with the custom port.
In order to have the app redirect to a subpath without including the "custom" port, forget the Response/Request objects, and use the Transfer method. For instance, if I want that users are automatically redirected to the login page in case they are not logged already:
if (!User.Identity.IsAuthenticated)
Server.TransferRequest("Account/Login");