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How to Send File to SignalR hub From websocket-sharp Client?

We are using the websocket-sharp in one of our applications which establishes a websocket connection with our SignalR Hub on the server, we are able to send the text messages and receive the response for the same but unable to post a byte[].
Code for sending text to server is this:
public void TestGroupData(string groupname)
{
DataCarrier dataCarrier = new DataCarrier()
{
H = "BILHub",
M = "GetAllGroupsFor",
A = new string[] { groupname }
};
string wsPacket = JsonConvert.SerializeObject(payLoad);
this._ws.Send(wsPacket);
//this.MakeServerCall(dataCarrier);
}
When we try to send byte[] using the below code, its not going through:
public void TestFileData()
{
try
{
// Read the file data
Console.WriteLine("Started reading file");
string fileName = #"C:\Saurabh\Data\Song.mp3";
byte[] file = File.ReadAllBytes(fileName);
DataCarrier dataCarrier = new DataCarrier()
{
H = "BILHub",
M = "SendFile",
A = new object[] { file }
};
string wsPacket = JsonConvert.SerializeObject(dataCarrier);
this._ws.SendAsync(file , OnSendComplete);
}
catch (Exception ex)
{
Console.WriteLine(ex);
//throw;
}
}
Any help with this? How can I set my hub name in _ws.sendAsync()?

Sending big files is not really what SignalR is meant for.
SignalR is good for real-time messaging purposes between server & clients, for a rather small sized messages (as messahe size has a real impact on performance).
For such a need I would look into ASP.NET Web API, especially by using chunked upload (splitting file in multiple pieces to avoid connection interruptions)

Opening a document from Imanage in Word 2016

I am attempting to open an Imanage document, in MS Word, within a temporary test application (for debugging) to later copy over into an ActiveX control project. The error that is popping up is:
Exception thrown at 0x7618851A (msvcrt.dll) in w3wp.exe: 0xC0000005: Access >violation reading location 0x09801000.
If there is a handler for this exception, the program may be safely continued.
The error occurs when running the cmd.Execute line and I am unsure as to why I am getting the error.
using IManage;
using IMANEXTLib;
using System;
namespace WebApplication3
{
public partial class WebForm2 : System.Web.UI.Page
{
IManDatabase imanagedatabase;
IManDMS myDMS = new ManDMSClass();
protected void Page_Load(object sender, EventArgs e)
{
openImanageDoc("docNumber", "versionNumber", "server", "database", ReadOnly);
}
public void imanageLogin(string server, string database)
{
try
{
IManSession session = myDMS.Sessions.Add(server);
IManWorkArea oWorkArea = session.WorkArea;
session.TrustedLogin();
foreach (IManDatabase dbase in session.Databases)
{
if (dbase.Name == database)
{
imanagedatabase = dbase;
}
}
}
catch (Exception ex)
{
throw ex;
}
}
public void openImanageDoc(string docNo, string versionNo, string server, string database, bool isReadOnly = true)
{
IManDocument doc;
try
{
imanageLogin(server, database);
int iDocNo = int.Parse(docNo);
int iVersion = int.Parse(versionNo);
doc = imanagedatabase.GetDocument(iDocNo, iVersion);
openNRTDocument(ref doc, isReadOnly);
imanagedatabase.Session.Logout();
myDMS.Close();
}
catch (Exception Ex)
{
imanagedatabase.Session.Logout();
throw Ex;
}
finally
{
imanagedatabase = null;
myDMS = null;
}
}
public void openNRTDocument(ref IManDocument nrtDocument, Boolean isReadonly)
{
OpenCmd cmd = new OpenCmd();
ContextItems objContextItems = new ContextItems();
objContextItems.Add("NRTDMS", myDMS);
objContextItems.Add("SelectedNRTDocuments", new[] { (NRTDocument)nrtDocument.LatestVersion });
objContextItems.Add("IManExt.OpenCmd.Integration", false);
objContextItems.Add("IManExt.OpenCmd.NoCmdUI", true);
cmd.Initialize(objContextItems);
cmd.Update();
cmd.Execute();
}
}
}
Due to the nature of the error, I am presuming it is a configuration issue rather than a code error although I could be completely wrong as I am very new to programming.
I have found out that w3wp.exe is an IIS worker process created by the app pool but other than that I have no idea what the numeric code represents. Any help or advice is greatly appreciated.

The error is being raised by the OpenCmd instance because it is most likely trying to access resources such as local registry settings. It's not possible to do that in a web application, unless you host your code in a proprietary technology like ActiveX (which is specific to Internet Explorer)
Actually, it is not appropriate for you to use OpenCmd here. Those type of commands (iManage "ICommand" implementations) are intended to be used in regular Windows applications that have either the iManage FileSite or DeskSite client installed. These commands are all part of the so-called Extensibility COM libraries (iManExt.dll, iManExt2.dll, etc) and should not be used in web applications, or at least used with caution as they may inappropriately attempt to access the registry, as you've discovered, or perhaps even display input Win32 dialogs.
For a web app you should instead just limit yourself to the low-level iManage COM library (IManage.dll). This is in fact what iManage themselves do with their own WorkSite Web application
Probably what you should do is replace your openNRTDocument method with something like this:
// create a temporary file on your web server..
var filePath = Path.GetTempFileName();
// fetch a copy of the iManage document and save to the temporary file location
doc.GetCopy(filePath, imGetCopyOptions.imNativeFormat);
In an MVC web application you would then just return a FileContentResult, something like this:
// read entire document as a byte array
var docContent = File.ReadAllBytes(filePath);
// delete temporary copy of file
File.Delete(filePath);
// return byte stream to web client
return File(stream, MediaTypeNames.Application.Octet, fileName);
In a Web Forms application you could do something like this:
// set content disposition as appropriate - here example is for Word DOCX files
Response.ContentType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
// write file to HTTP content output stream
Response.WriteFile(filePath);
Response.End();

How to send a local file through a REST service?

I am developing a REST web service using WCF and C# (VS 2010). I want to develop an operation like this:
doSomethingWithAFile(String filePath)
so it would be invoked like this:
GET http://my.web.service/endpoint?filePath={filePath}
filePath is a file path in the client (not in the server). So, when invoked, that operation has to send the file pointed by the path to the server so that the server can do some operations with the data contained in the file.
How can I achieve this?
EDIT: As stated in the comment I made, I would set a shared folder in the client, so I send the path and the server reads the file in the folder.

On your server, you will have to have a service with a method that accepts a string input, which you call with the file path from the client application.
You then read/copy/whichever the file from that location, on your server via normal file IO methods.
An example of how to do this you can find below.
The definition of ServerPleaseFetchThisFile naturally depends on what kind of webservice this would be, WCF or IIS web service or self made web service.
public bool ServerPleaseFetchThisFile(string targetPath)
{
// targetPath should enter from the client in format of \\Hostname\Path\to\the\file.txt
return DoSomethingWithAFile(targetPath);
}
private bool DoSomethingWithAFile(string targetFile)
{
bool success = false;
if (string.IsNullOrWhiteSpace(targetFile))
{
throw new ArgumentNullException("targetFile", "The supplied target file is not a valid input.");
}
if (!File.Exists(targetFile))
{
throw new ArgumentNullException("targetFile", "The supplied target file is not a valid file location.");
}
try
{
using (FileStream targetStream = new FileStream(targetFile, FileMode.Open, FileAccess.Read))
{
// Do something with targetStream
success = true;
}
}
catch (SecurityException se)
{
throw new Exception("Security Exception!", se);
// Do something due to indicate Security Exception to the file
// success = false;
}
catch (UnauthorizedAccessException uae)
{
throw new Exception("Unathorized Access!", uae);
// Do something due to indicate Unauthorized Access to the file
// success = false;
}
return success;
}

Windows 8 app how to connect to Socket server

i have done a server using this example socketAsyncEventArgs
in visual studio 2010 and .net 4.0.
Now i'm trying to connect to it from a windows 8 app using StreamSocket but i'm getting a "Acces denied" message.
here is the Client code:
private StreamSocket streamSocket;
public string Server = "192.168.0.101";
public int Port = 9900;
public async void Connect()
{
streamSocket = new StreamSocket();
Connect();
try
{
await streamSocket.ConnectAsync(
new Windows.Networking.HostName(Server),
Port.ToString()); // getting Acces Denied here
DataReader reader = new DataReader(streamSocket.InputStream);
reader.InputStreamOptions = InputStreamOptions.Partial;
while (true)
{
var bytesAvailable = await reader.LoadAsync(1000);
var byteArray = new byte[bytesAvailable];
reader.ReadBytes(byteArray);
}
}
catch (Exception e)
{
MessageBox(e.StackTrace);
}
}
How to fix the problem? Is there another way to send and receive messages using this server?

You are probably also seeing the following as part of your error message:
WinRT information: A network capability is required to access this network resource
This is because you need to add a capability to your application that allows you to access local networks. Double click on the Package.appxmanifest file in your project. Click on the Capabilities tab. Add the Private Networks (Client & Server) capability to your project.

Transfer file from Windows Mobile device to...anywhere

I can't seem to find a solution to this issue. I'm trying to get my Compact Framework application on Windows Mobile 6 to have the ability to move a file on its local filesystem to another system.
Here's the solutions I'm aware of:
FTP - Problem with that is most of
the APIs are way to expensive to use.
HTTP PUT - As far as I have been able to find, I can't use anonymous PUT with IIS7, and that's the web server the system is running. (An extreme workaround for this would be to use a different web server to PUT the file, and have that other system transfer it to the IIS system).
Windows share - I would need authentication on the shares, and I haven't seen that a way to pass this authentication through windows mobile.
The last resort would be to require that the devices be cradled to transfer these files, but I'd really like to be able to have these files be transferred wirelessly.

FTP: define "too expensive". Do you mean performance or byte overhead or dollar cost? Here's a free one with source.
HTTP: IIS7 certainly supports hosting web services or custom IHttpHandlers. You could use either for a data upload pretty easily.
A Windows Share simply requires that you to P/Invoke the WNet APIs to map the share, but it's not terribly complex.

I ended up just passing information to a web server via a PHP script.
The options provided above just didn't work out for my situation.
Here's the gist of it. I've got some code in there with progress bars and various checks and handlers unrelated to simply sending a file, but I'm sure you can pick through it. I've removed my authentication code from both the C# and the PHP, but it shouldn't be too hard to roll your own, if necessary.
in C#:
/*
* Here's the short+sweet about how I'm doing this
* 1) Copy the file from mobile device to web server by querying PHP script with paramaters for each line
* 2) PHP script checks 1) If we got the whole data file 2) If this is a duplicate data file
* 3) If it is a duplicate, or we didn't get the whole thing, it goes away. The mobile
* device will hang on to it's data file in the first case (if it's duplicate it deletes it)
* to be tried again later
* 4) The server will then process the data files using a scheduled task/cron job at an appropriate time
*/
private void process_attempts()
{
Uri CheckUrl = new Uri("http://path/to/php/script?action=check");
WebRequest checkReq = WebRequest.Create(CheckUrl);
try
{
WebResponse CheckResp = checkReq.GetResponse();
CheckResp.Close();
}
catch
{
MessageBox.Show("Error! Connection not available. Please make sure you are online.");
this.Invoke(new Close(closeme));
}
StreamReader dataReader = File.OpenText(datafile);
String line = null;
line = dataReader.ReadLine();
while (line != null)
{
Uri Url = new Uri("http://path/to/php/script?action=process&line=" + line);
WebRequest WebReq = WebRequest.Create(Url);
try
{
WebResponse Resp = WebReq.GetResponse();
Resp.Close();
}
catch
{
MessageBox.Show("Error! Connection not available. Please make sure you are online.");
this.Invoke(new Close(closeme));
return;
}
try
{
process_bar.Invoke(new SetInt(SetBarValue), new object[] { processed });
}
catch { }
process_num.Invoke(new SetString(SetNumValue), new object[] { processed + "/" + attempts });
processed++;
line = dataReader.ReadLine();
}
dataReader.Close();
Uri Url2 = new Uri("http://path/to/php/script?action=finalize&lines=" + attempts);
Boolean finalized = false;
WebRequest WebReq2 = WebRequest.Create(Url2);
try
{
WebResponse Resp = WebReq2.GetResponse();
Resp.Close();
finalized = true;
}
catch
{
MessageBox.Show("Error! Connection not available. Please make sure you are online.");
this.Invoke(new Close(closeme));
finalized = false;
}
MessageBox.Show("Done!");
this.Invoke(new Close(closeme));
}
In PHP (thoroughly commented for your benefit!):
<?php
//Get the GET'd values from the C#
//The current line being processed
$line = $_GET['line'];
//Which action we are doing
$action = $_GET['action'];
//# of lines in the source file
$totalLines = $_GET['lines'];
//If we are processing the line, open the data file, and append this new line and a newline.
if($action == "process"){
$dataFile = "tempdata/SOME_KIND_OF_UNIQUE_FILENAME.dat";
//open the file
$fh = fopen($dataFile, 'a');
//Write the line, and a newline to the file
fwrite($fh, $line."\r\n");
//Close the file
fclose($fh);
//Exit the script
exit();
}
//If we are done processing the original file from the C# application, make sure the number of lines in the new file matches that in the
//file we are transferring. An expansion of this could be to compare some kind of hash function value of both files...
if($action == "finalize"){
$dataFile = "tempdata/SOME_KIND_OF_UNIQUE_FILENAME.dat";
//Count the number of lines in the new file
$lines = count(file($dataFile));
//If the new file and the old file have the same number of lines...
if($lines == $totalLines){
//File has the matching number of lines, good enough for me over TCP.
//We should move or rename this file.
}else{
//File does NOT have the same number of lines as the source file.
}
exit();
}
if($action == "check"){
//If a file with this unique file name already exists, delete it.
$dataFile = "tempdata/SOME_KIND_OF_UNIQUE_FILENAME.dat";
if(file_exists($dataFile)){
unlink($dataFile);
}
}
?>