I'm using Htmlunit in my C# project, but I cannot convert this code in java to C#
webClient.setWebConnection(new HttpWebConnection(webClient) {
public WebResponse getResponse(WebRequestSettings settings) throws IOException {
System.out.println(settings.getUrl());
return super.getResponse(settings);
}
});
Can anyone kindly convert it to C# ?
Thank in advance
I don't think that this might be the right conversion, but you can try it and let us know, as "HtmlUnit is a class library for Java that lets you programmatically play with web sites."
One think to remember that although the syntax between Java and C# looks the same, the way exceptions are declared is treated differently. In Java your class methods needs to identify the exceptions that it could possibly throw, where as this is not the case in C#, from there my feeble attempt to rewrite the piece of code.
Another thing I've picked up is the defining of methods within the object creation, but that might be part of the HtmlUnit framework.
webClient.setWebConnection(new HttpWebConnection(webClient) {
public WebResponse getResponse(WebRequestSettings settings) {
System.out.println(settings.getUrl());
return this.getResponse(settings);
}
});
If it is not working, it might just nudge you in the right direction.
You might be looking for the .NET WebClient class and the code examples under its Download*(..) methods. e.g.
using System.Net;
One example of many, copied from MSDN:
Console.Write("\nPlease enter a URI (for example, http://www.contoso.com): ");
string remoteUri = Console.ReadLine();
// Create a new WebClient instance.
WebClient myWebClient = new WebClient();
// Download home page data.
Console.WriteLine("Downloading " + remoteUri);
// Download the Web resource and save it into a data buffer.
byte[] myDataBuffer = myWebClient.DownloadData (remoteUri);
// Display the downloaded data.
string download = Encoding.ASCII.GetString(myDataBuffer);
Console.WriteLine(download);
Console.WriteLine("Download successful.");
Related
I am facing issue with perforce api (.net), as i am unable to pull sync logs in real time.
- What am I trying to do
I am trying to pull real time logs as Sync is triggered using the
Perforce.P4.Client.SyncFiles() command. Similar to the P4V GUI Logs, which update when we try to sync any files.
- What is happening now
As the output is generated only after the command is done execution its not something intended for.
Also tried looking into Perforce.P4.P4Server.RunCommand() which does provide detailed report but only after the execution of the command.
Looked into this
Reason is -
I am trying to add a status update to the Tool i am working on which shows which Perforce file is currently being sync'd.
Please advise. Thanks in Advance.
-Bharath
In the C++ client API (which is what P4V is built on), the client receives an OutputInfo callback (or OutputStat in tagged mode) for each file as it begins syncing.
Looking over the .NET documentation I think the equivalents are the P4CallBacks.InfoResultsDelegate and P4CallBacks.TaggedOutputDelegate which handle events like P4Server.InfoResultsReceived etc.
I ended up with the same issue, and I struggled quite a bit to get it to work, so I will share the solution I found:
First, you should use the P4Server class instead of the Perforce.P4.Connection. They are two classes doing more or less the same thing, but when I tried using the P4.Connection.TaggedOutputReceived events, I simply got nothing back. So instead I tried with the P4Server.TaggedOutputReceived, and there, finally, I got the TaggedOutput just like I wanted.
So, here is a small example:
P4Server p4Server = new P4Server(cwdPath); //In my case I use P4Config, so no need to set user or to login, but you can do all that with the p4Server here.
p4Server.TaggedOutputReceived += P4ServerTaggedOutputEvent;
p4Server.ErrorReceived += P4ServerErrorReceived;
bool syncSuccess=false;
try
{
P4Command syncCommand = new P4Command(p4Server, "sync", true, syncPath + "\\...");
P4CommandResult rslt = syncCommand.Run();
syncSuccess=true;
//Here you can read the content of the P4CommandResult
//But it will only be accessible when the command is finished.
}
catch (P4Exception ex) //Will be caught only when the command has failed
{
Console.WriteLine("P4Command failed: " + ex.Message);
}
And the method to handle the error messages or the taggedOutput:
private void P4ServerErrorReceived(uint cmdId, int severity, int errorNumber, string data)
{
Console.WriteLine("P4ServerErrorReceived:" + data);
}
private void P4ServerTaggedOutputEvent(uint cmdId, int ObjId, TaggedObject Obj)
{
Console.WriteLine("P4ServerTaggedOutputEvent:" + Obj["clientFile"]); //Write the synced file name.
//Note that I used this only for a 'Sync' command, for other commands, I guess there might not be any Obj["clientFile"], so you should check for that.
}
I am new to JINT, and trying to just do some basic tests to kind of learn the ropes. My first attempt was to just store some javascript in my database, load it, and execute it in a unit test. So that looks essentially like this....
[Fact]
public void can_use_jint_engine() {
using (var database = DocumentStore()) {
using (var session = database.OpenSession()) {
var source = session.Load<Statistic>("statistics/1");
// join the list of strings into a single script
var script = String.Join("\n", source.Scripting);
// this will create the script
// console.log("this is a test from jint.");
//
var engine = new Jint.Engine();
// attempt to execute the script
engine.Execute(script);
}
}
}
And it doesn't work, I get this error, which makes absolutely no sense to me, and I cannot find any documentation on.
Jint.Runtime.JavaScriptExceptionconsole is not defined at
Jint.Engine.Execute(Program program) at
Jint.Engine.Execute(String source) at
SampleProject.Installers.Instanced.__testing_installer.can_use_jint_engine()
in _testing_installer.cs: line 318
Can anyone assist in shedding some light on this? I'm pretty confused at this point.
With JavaScript there are three entities - we care about. The host (browser, your application etc), the engine (JINT in this case) and the script ("console.log(...)") in this case.
JavaScript defines a bunch of functions and object as part of the language, but console is not one of them. By convention, browsers define a console object that can be used in the manner you describe. However, since your app is not a browser (and JINT does not do this by itself), there's no console object defined in your namespace (globals).
What you need to do is add a console object that will be accessible in JINT. You can find how to do this in the docs, but here's a simple example of how to add a log function to the engine so it can be used from the JS code (example taken from github).
var engine = new Engine()
.SetValue("log", new Action<object>(Console.WriteLine))
;
engine.Execute(#"
function hello() {
log('Hello World');
};
hello();
");
For our current project we are using DBus (1.6.n).
It is largely accessed from C++ in shared memory mode, and this works really well.
I am now trying to access the same DBus from a C# program.
In order to try things out first, I downloaded the latest version of dbus-sharp I could find, and started the daemon included in the download to see if I could connect to it from my test C# app.
Whenever I make a connection, the daemon console shows that I am communicating with it, but as soon as I try to access any methods on the connection I get the error;
'Access is denied: DBus.BusObject'
Here is the code I have tried;
DBus.Bus dBus = null;
try
{
//input address comes from the UI and ends up as "tcp:host=localhost,port=12345";
//dBus = new Bus(InputAddress.Text + inputAddressExtension.Text);
//string s = dBus.GetId();
//dBus.Close();
//DBus.Bus bus = DBus.Bus.System;
//DBus.Bus bus = Bus.Open(InputAddress.Text + inputAddressExtension.Text);
//DBus.Bus bus = DBus.Bus.Session;
//DBus.Bus bus = DBus.Bus.Starter;
var conn = Connection.Open(InputAddress.Text + inputAddressExtension.Text);
var bus = conn.GetObject<Introspectable>(#"org.freedesktop.DBus.Introspectable", new ObjectPath("/org/freedesktop/DBus/Introspectable"));
bus.Introspect();
}
finally
{
if(dBus != null)
dBus.Close();
}
The commented code produces the same error eventually too.
I have stepped through with the debugger and it always gets to the following code in the TypeImplementer.cs;
public Type GetImplementation (Type declType)
{
Type retT;
lock (getImplLock)
if (map.TryGetValue (declType, out retT))
return retT;
string proxyName = declType.FullName + "Proxy";
Type parentType;
if (declType.IsInterface)
parentType = typeof (BusObject);
else
parentType = declType;
TypeBuilder typeB = modB.DefineType (proxyName, TypeAttributes.Class | TypeAttributes.Public, parentType);
if (declType.IsInterface)
Implement (typeB, declType);
foreach (Type iface in declType.GetInterfaces ())
Implement (typeB, iface);
retT = typeB.CreateType (); <======== Fails here ==========
lock (getImplLock)
map[declType] = retT;
return retT;
}
I have not found any useful examples or documentation about accessing DBus from C#, and there seem to be few recent entries about this anywhere, so maybe no-one else is trying this.
I am running the daemon in the same folder as the test program.
As I am running on windows, the daemon is listening on the tcp setting;
string addr = "tcp:host=localhost,port=12345";
Since this is the example included with the download, I thought it would be really simple to get it going, but alas no luck yet.
Has anyone else been here and know the next piece of the puzzle?
Any ideas would be appreciated.
Having received no comment or response, I will answer the question with the information I have found since asking it.
There appears to be no useful C# interface to DBus. (By useful, I mean one that works!)
The only information or examples I could find are not up to date and no effort appears to be being expended on providing a working interface.
I have decided to interface with DBus by using a C++ implementation written as a Windows service, and my C# program will send messages to DBus via the service. This seems to work ok, so satisfies the business need.
I am disappointed not to be able to get the C# to DBus working, but there are lots of service bus implementations that work on Windows, so in future I will look at implementing those instead of DBus.
If anyone does come up with a workable, documented solution to accessing DBus from C# on Windows, I would still be interested to see it.
I had the same error when I created new test project and add dbus cs source files to it main project assembly. It was when IBusProxy type dynamically created in dynamically created assembly.
asmB = AppDomain.CurrentDomain.DefineDynamicAssembly (new AssemblyName ("NDesk.DBus.Proxies"), canSave ? AssemblyBuilderAccess.RunAndSave : AssemblyBuilderAccess.Run);
modB = asmB.DefineDynamicModule ("NDesk.DBus.Proxies");
......
retT = typeB.CreateType ();
I think it was cause current running assembly isnt friendly for created assembly. And just when I add to project compiled NDesk.DBus.dll this error disappeared.
I'm having some trobule with Web Sockets and Microsoft's Draft implementation. I'm using the API provided by them for the server back and as well as the Silverlight fix for browsers that don't natively support Web Sockets. The information i'm working off of comes from http://channel9.msdn.com/Events/MIX/MIX11/HTM10 and http://html5labs.interoperabilitybridges.com/prototypes/websockets/websockets/info
My code compiles okay, it starts to open the connection, then fails. Here's my backend server code (in a C# Console App)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.ServiceModel.WebSockets;
namespace ChatBackend
{
class Program
{
static void Main(string[] args)
{
var host = new WebSocketsHost<MessageHandler>();
host.AddWebSocketsEndpoint("ws://localhost:4502/MessageHandler");
host.Open();
Console.ReadLine();
}
}
}
Here's the MessageHandler class:
class MessageHandler : WebSocketsService
{
public override void OnMessage(string value)
{
string returnMessage = "You just said '" + value + "'";
Console.WriteLine(value);
SendMessage(returnMessage);
}
}
This backend part seems to work fine. Here's the client end:
$(document).ready(function () {
setTimeout(connect, 2050);
});
function connect() {
websocket = new WebSocketDraft("ws://localhost:4502/MessageHandler");
websocket.onopen = function() {
websocket.send("test");
};
websocket.onclose = function () {
alert("DIED");
};
websocket.onmessage = function(event) {
sendMessage(new message(0, event.data, 0));
};
}
EDIT: I checked my firewall and allowed the port i was using. Now the connection just hangs - it doesn't close, it doesn't open. Any ideas?
EDIT 2: I did some more research, turns out i need to remove the clientaccesspolicy.xml. Also turns out i never had it, but i WAS returning a custom 302 redirect instead of a 404 not found. Fixed that, but no progress. It just hangs.
EDIT 3: Tried turning off Anti-Virus and Firewall, no change
Thanks - let me know if i need anymore code or information up here.
Can you use Firebug or something and put a breakpoint on this line in jquery.slws.js (assuming its the one you're using!)
this.slws = slCtl.Content.services.createObject("websocket");
And then step through and see where it fails ?
Your URL definitely looks like it matches the setting on your server side. It's really hard to find any examples of WebSockets actually being used since it's still such a new technology, but from what I could follow of the only working example I could find (it was on the html5labs site), I think maybe you're trying to write to the socket before it's finished opening. In the example I found, it looked like they check the readyState property of the socket, and only try to send if readyState === 1. The socket in that example gets opened by tying into the $(document).ready event, and send gets called from a button click.
Finally got this working! Turns out i had to add clientaccesspolicy.xml to the root folder of the default website on my server. I thought i had to delete it - i misread some information and promptly forgot about it. Moral of the story: read the readme!
Back in .NET 1.0 days I wrote a method to return the target of a shortcut on MS Windows. It did this through using an interop to the Windows Script Hosting Object Model and brute forced through the COM interface:
private FileInfo GetFileFromShortcut(FileInfo shortcut)
{
FileInfo targetFile = null;
try
{
IWshRuntimeLibrary.WshShell wShell = new IWshRuntimeLibrary.WshShellClass();
IWshRuntimeLibrary.WshShortcut wShortcut = (IWshRuntimeLibrary.WshShortcut)wShell.CreateShortcut(shortcut.FullName);
// if the file wasn't a shortcut then the TargetPath comes back empty
string targetName = wShortcut.TargetPath;
if (targetName.Length > 0)
{
targetFile = new FileInfo(targetName);
}
}
catch (Exception)
{ // will return a null targetFile if anything goes wrong
}
return targetFile;
}
This still bugs me, and I was looking to replace this with something more elegant, but only if the replacement actually works at least as well. I still can't find a native C# way of finding the target of a shortcut. Is there one, or is this still the best way of doing this type of thing?
It looks like someone has written a class to manipulate shortcut files in C# called ShellLink, but it too uses COM.
Can't you just open the .lnk or .url file and parse it?
This talks about the same thing and shows what the files look like:
http://www.programmingtalk.com/showthread.php?t=7335
I got interested in this as well a while ago.
Here is the accepted response with a link to a (informal) description of the format of LNK files. Apparently, all available methods yet go through some API.