NativeMessaging

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NativeMessaging

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C# Chome Native Messaging Library

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# NativeMessaging
C# Chome Native Messaging Library

Can be used to receive data from or talk to a Chrome, Edge or any other Chromium based browser extension.

https://www.nuget.org/packages/NativeMessaging/#

This can currently be used with the example app provided here: https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/docs/examples/api/nativeMessaging

## Usage
Extend the host class and decide what you want to do when you receive a message.
```C#
public class MyHost : Host
    {
        private const bool SendConfirmationReceipt = true;

public override string Hostname
        {
            get { return "com.anewtonlevey.myhost"; }
        }

public MyHost() : base(SendConfirmationReceipt)
        {

}

protected override void ProcessReceivedMessage(JObject data)
        {
            SendMessage(data);
        }
    }
```

```C#
class Program
    {
        static public string AssemblyLoadDirectory
        {
            get
            {
                string codeBase = Assembly.GetEntryAssembly().CodeBase;
                UriBuilder uri = new UriBuilder(codeBase);
                string path = Uri.UnescapeDataString(uri.Path);
                return Path.GetDirectoryName(path);
            }
        }

static public string AssemblyExecuteablePath
		{
			get
			{
				string codeBase = Assembly.GetEntryAssembly().CodeBase;
				UriBuilder uri = new UriBuilder(codeBase);
				return Uri.UnescapeDataString(uri.Path);
			}
		}

static Host Host;

static string[] AllowedOrigins = new string[] { "chrome-extension://knldjmfmopnpolahpmmgbagdohdnhkik/" };
        static string Description = "Description Goes Here";

static void Main(string[] args)
        {
            Host = new MyHost();
	    Host.SupportedBrowsers.Add(ChromiumBrowser.GoogleChrome);
	    Host.SupportedBrowsers.Add(ChromiumBrowser.MicrosoftEdge);

if (args.Contains("--register"))
            {
                Host.GenerateManifest(Description, AllowedOrigins);
                Host.Register();
            } else if(args.Contains("--unregister"))
            {
                Host.UnRegister();
            } else
            {
                Host.Listen();
            }
        }
    }
```

## Troubleshooting
If your're having trouble connecting from Chrome try launching chrome with ```--enable-logging``` flag as detailed in [Debugging native messaging](https://developer.chrome.com/apps/nativeMessaging#native-messaging-debugging).

It also recommeneded to try compiling in Release mode if you're encountering issues.

NativeMessaging

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