400 Bad Request

It&#39;s a user error in the request.  Unlike with a 403, the client *should* be allowed to repeat their request, but only after modification:

&gt;***10.4.1 400 Bad Request*** The request could not be understood by the server due to malformed syntax. The client SHOULD NOT repeat the request without modifications.

***Edit***

As Mark Reed points out in the comments, a 403 says, &quot;There is nothing wrong with what you sent me.  You have proper authorization and the syntax was valid. I just don&#39;t want to do what you ask.&quot;

The part that you have in bold simply says, if the server so chooses, it can tell the client exactly why it doesn&#39;t want to fulfill the request.

I create a Master-Detail application using Core Data. And there is  a simple code to 
get the path for Model file:


    NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@&quot;Model&quot; withExtension:@&quot;momd&quot;];

I have no idea why the extension isn&#39;t &quot;xcdatamodel&quot; but &quot;momd&quot;. 

Does anyone know the answer?



Why the Extension is &quot;momd&quot; but not &quot;xcdatamodel&quot; when search the path for the Model file

I am using Windows. When staging files I get this error.

`Updating the Git index failed. A rescan will be automatically started to resynchronize git-gui.`

followed by a list of files which have been converted from LF to CRLF

After a lot of reading up on the CRLF / LF issue with Git usage cross platform, I more or less understand what is going on, and I am trying to determine which autocrlf setting is best for me, but I cant understand why Git says that Updating the index failed. My understanding is that it has converted the EOF&#39;s so what is the problem with that and why is it telling me that updating the index has failed. Do I need to fix something ( other than picking an appropriate autocrlf setting) or can I just proceed

I then have two options Continue and Unlock Index, what do these mean and what is the best course of action.


Why is &#39;Updating the Git index failed&#39; displayed

I read https://stackoverflow.com/questions/3050518/what-http-status-response-code-should-i-use-if-the-request-is-missing-a-required but it did not specifically ask about headers and there didn&#39;t seem to be a consensus.

The context of this question assumes successful authentication.  I&#39;m currently favoring either a 400 (though that doesn&#39;t feel right because this isn&#39;t really a case of &quot;malformed syntax&quot;) or 403.  Given 403&#39;s description:

&gt; The server understood the request, but is refusing to fulfill it.
&gt; Authorization will not help and the request SHOULD NOT be repeated. **If
&gt; the request method was not HEAD and the server wishes to make public
&gt; why the request has not been fulfilled, it SHOULD describe the reason
&gt; for the refusal in the entity.**

This makes the most sense to me.

Can someone please enlighten me?  Thanks.

What is the most appropriate HTTP status code to return if a required header is missing?

I read <a href="https://stackoverflow.com/questions/3050518/what-http-status-response-code-should-i-use-if-the-request-is-missing-a-required" target="_blank" rel="noopener noreferrer">https://stackoverflow.com/questions/3050518/what-http-status-response-code-should-i-use-if-the-request-is-missing-a-required</a> but it did not specifically ask about headers and there didn't seem to be a consensus.
The context of this question assumes successful authentication. I'm currently favoring either a 400 (though that doesn't feel right because this isn't really a case of "malformed syntax") or 403. Given 403's description:
> The server understood the request, but is refusing to fulfill it.
> Authorization will not help and the request SHOULD NOT be repeated. If
> the request method was not HEAD and the server wishes to make public
> why the request has not been fulfilled, it SHOULD describe the reason
> for the refusal in the entity.
This makes the most sense to me.
Can someone please enlighten me? Thanks.

When I send a normal HTTP request via a socket, the server does not respond with an OK response. I copied the HTTP header from Firefox. Here is the code:

    Socket s = new Socket(InetAddress.getByName(&quot;stackoverflow.com&quot;), 80);
    PrintWriter pw = new PrintWriter(s.getOutputStream());
    pw.print(&quot;GET / HTTP/1.1&quot;);
    pw.print(&quot;Host: stackoverflow.com&quot;);
    pw.flush();
    BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
    String t;
    while((t = br.readLine()) != null) System.out.println(t);
    br.close();

However, here is the response I received:

    HTTP/1.0 408 Request Time-out
    Cache-Control: no-cache
    Connection: close
    Content-Type: text/html
    
    &lt;html&gt;&lt;body&gt;&lt;h1&gt;408 Request Time-out&lt;/h1&gt;
    Your browser didn&#39;t send a complete request in time.
    &lt;/body&gt;&lt;/html&gt;

I know that I can do this by using `URL.openStream()`, but why doesn&#39;t the server identify the HTTP request when I send it manually?


Send HTTP request manually via socket

I want to remove X-Powered-By for Security,Save Bandwidth in ExpressJS(node.js). how to do it?
it could be filter(app.use) ?

    app.use(function(req,res,next_cb){ /* remove X-Powered-By header */ next_cb(); }


how to remove X-Powered-By in ExpressJS

I try to build a python script who sends a POST with parameters for extracting the result.
With fiddler, I have extracted the post request who return that I want. The website uses https only. 

    POST /Services/GetFromDataBaseVersionned HTTP/1.1
    Host: www.mywbsite.fr
    &quot;Connection&quot;: &quot;keep-alive&quot;,
    &quot;Content-Length&quot;: 129,
    &quot;Origin&quot;: &quot;https://www.mywbsite.fr&quot;,
    &quot;X-Requested-With&quot;: &quot;XMLHttpRequest&quot;,
    &quot;User-Agent&quot;: &quot;Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.52 Safari/536.5&quot;,
    &quot;Content-Type&quot;: &quot;application/json&quot;,
    &quot;Accept&quot;: &quot;*/*&quot;,
    &quot;Referer&quot;: &quot;https://www.mywbsite.fr/data/mult.aspx&quot;,
    &quot;Accept-Encoding&quot;: &quot;gzip,deflate,sdch&quot;,
    &quot;Accept-Language&quot;: &quot;fr-FR,fr;q=0.8,en-US;q=0.6,en;q=0.4&quot;,
    &quot;Accept-Charset&quot;: &quot;ISO-8859-1,utf-8;q=0.7,*;q=0.3&quot;,
    &quot;Cookie&quot;: &quot;ASP.NET_SessionId=j1r1b2a2v2w245; GSFV=FirstVisit=; GSRef=https://www.google.fr/url?sa=t&amp;rct=j&amp;q=&amp;esrc=s&amp;source=web&amp;cd=1&amp;ved=0CHgQFjAA&amp;url=https://www.mywbsite.fr/&amp;ei=FZq_T4abNcak0QWZ0vnWCg&amp;usg=AFQjCNHq90dwj5RiEfr1Pw; HelpRotatorCookie=HelpLayerWasSeen=0; NSC_GSPOUGS!TTM=ffffffff09f4f58455e445a4a423660; GS=Site=frfr; __utma=1.219229010.1337956889.1337956889.1337958824.2; __utmb=1.1.10.1337958824; __utmc=1; __utmz=1.1337956889.1.1.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=(not%20provided)&quot;
    
    {&quot;isLeftColumn&quot;:false,&quot;lID&quot;:-1,&quot;userIpCountryCode&quot;:&quot;FR&quot;,&quot;version&quot;:null,&quot;languageCode&quot;:&quot;fr&quot;,&quot;siteCode&quot;:&quot;frfr&quot;,&quot;Quotation&quot;:&quot;eu&quot;}

And now my python script:

    #!/usr/bin/env python
    # -*- coding: iso-8859-1 -*-
    import string
    import httplib
    import urllib2

    host = &quot;www.mywbsite.fr/sport/multiplex.aspx&quot;
        params=&#39;&quot;isLeftColumn&quot;:&quot;false&quot;,&quot;liveID&quot;:&quot;-1&quot;,&quot;userIpCountryCode&quot;:&quot;FR&quot;,&quot;version&quot;:&quot;null&quot;,&quot;languageCode&quot;:&quot;fr&quot;,&quot;siteCode&quot;:&quot;frfr&quot;,&quot;Quotation&quot;:&quot;eu&quot;&#39;

    headers = { Host: www.mywbsite.fr,
    &quot;Connection&quot;: &quot;keep-alive&quot;,
    &quot;Content-Length&quot;: 129,
    &quot;Origin&quot;: &quot;https://www.mywbsite.fr&quot;,
    &quot;X-Requested-With&quot;: &quot;XMLHttpRequest&quot;,
    &quot;User-Agent&quot;: &quot;Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.52 Safari/536.5&quot;,
    &quot;Content-Type&quot;: &quot;application/json&quot;,
    &quot;Accept&quot;: &quot;*/*&quot;,
    &quot;Referer&quot;: &quot;https://www.mywbsite.fr/data/mult.aspx&quot;,
    &quot;Accept-Encoding&quot;: &quot;gzip,deflate,sdch&quot;,
    &quot;Accept-Language&quot;: &quot;fr-FR,fr;q=0.8,en-US;q=0.6,en;q=0.4&quot;,
    &quot;Accept-Charset&quot;: &quot;ISO-8859-1,utf-8;q=0.7,*;q=0.3&quot;,
    &quot;Cookie&quot;: &quot;ASP.NET_SessionId=j1r1b2a2v2w245; GSFV=FirstVisit=;     GSRef=https://www.google.fr/url?sa=t&amp;rct=j&amp;q=&amp;esrc=s&amp;source=web&amp;cd=1&amp;ved=0CHgQFjAA&amp;url=https://www.mywbsite.fr/&amp;ei=FZq_T4abNcak0QWZ0vnWCg&amp;usg=AFQjCNHq90dwj5RiEfr1Pw; HelpRotatorCookie=HelpLayerWasSeen=0; NSC_GSPOUGS!TTM=ffffffff09f4f58455e445a4a423660; GS=Site=frfr; __utma=1.219229010.1337956889.1337956889.1337958824.2; __utmb=1.1.10.1337958824; __utmc=1; __utmz=1.1337956889.1.1.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=(not%20provided)&quot;

    }

    url = &quot;/Services/GetFromDataBaseVersionned&quot;
 
    # POST the request
    conn = httplib.HTTPConnection(host,port=443)
    conn.request(&quot;POST&quot;,url,params,headers)
    response = conn.getresponse()

    data = response.read()
    print data

But when I run my script, I have this error:

    socket.gaierror: [Errno -2] Name or service not known

Python send POST with header

Has Microsoft created a class full of constants for the standard HTTP header names or will I have to write my own?

Are there any constants for the default HTTP headers?

I want to write a C program to generate a Get Request without using any external libraries. Is this possible using only C libraries, using sockets ? I&#39;m thinking of crafting a http packet(using proper formatting) and sending it to the server. Is this the only possible way or is there a better way ? 



How to make an HTTP get request in C without libcurl?

I&#39;m trying to return a status code of 304 not modified for a GET method in a web api controller.

The only way I succeeded was something like this:

    public class TryController : ApiController
    {
        public User GetUser(int userId, DateTime lastModifiedAtClient)
        {
            var user = new DataEntities().Users.First(p =&gt; p.Id == userId);
            if (user.LastModified &lt;= lastModifiedAtClient)
            {
                 throw new HttpResponseException(HttpStatusCode.NotModified);
            }
            return user;
        }
    }

The problem here is that it&#39;s not an exception, It&#39;s just not modified so the client cache is OK.
I also want the return type to be a User (as all the web api examples shows with GET) not return HttpResponseMessage or something like this.

Returning http status code from Web Api controller

For certain resources, my RESTful server only accepts `PUT` and `POST` requests with JSON objects as the content body, thus requiring a `Content-Type` of `application/json` instead of `application/x-www-form-urlencoded` or `multipart/form-data` or anything else.

Malformed JSON (or lack thereof) returns a `400` with the error message taken directly from the exception raised by the JSON parser, for debugging purposes.

Which HTTP error code means that the client sent a request with an unacceptable `Content-Type`, even if the server could technically parse the request content?

HTTP status code for unaccepted Content-Type in request

After reviewing an article [Exception Handling in ASP.NET Web API][1] I am a bit confused as to when to throw an exception vs return an error response. I am also left wondering whether it is possible to modify the response when your method returns a domain specific model instead of `HttpResponseMessage`...

So, to recap here are my questions followed by some code with case #s:

#Questions#

##Questions regarding Case #1##
1. Should I always use `HttpResponseMessage` instead of a concrete domain model, so that the message can be customized?
2. Can the message be customized if you are returning concrete domain model?     

##Questions regarding Case #2,3,4##
3. Should I be throwing an exception or returning error response? If the answer is &quot;it depends&quot;, can you give situations/examples on when to use one vs the other. 
4. What is the difference between throwing `HttpResponseException` vs `Request.CreateErrorResponse` ? The output to client seems identical...
5. Should I always use `HttpError` to &quot;wrap&quot; response messages in errors (whether the exception is thrown or error response returned)?

#Case Samples#

    // CASE #1
    public Customer Get(string id)
    {
        var customer = _customerService.GetById(id);
        if (customer == null)
        {
            var notFoundResponse = new HttpResponseMessage(HttpStatusCode.NotFound);
            throw new HttpResponseException(notFoundResponse);
        }
        //var response = Request.CreateResponse(HttpStatusCode.OK, customer);
        //response.Content.Headers.Expires = new DateTimeOffset(DateTime.Now.AddSeconds(300));
        return customer;
    }        
    
    // CASE #2
    public HttpResponseMessage Get(string id)
    {
        var customer = _customerService.GetById(id);
        if (customer == null)
        {
            var notFoundResponse = new HttpResponseMessage(HttpStatusCode.NotFound);
            throw new HttpResponseException(notFoundResponse);
        }
        var response = Request.CreateResponse(HttpStatusCode.OK, customer);
        response.Content.Headers.Expires = new DateTimeOffset(DateTime.Now.AddSeconds(300));
        return response;
    }
    
    // CASE #3
    public HttpResponseMessage Get(string id)
    {
        var customer = _customerService.GetById(id);
        if (customer == null)
        {
            var message = String.Format(&quot;customer with id: {0} was not found&quot;, id);
            var errorResponse = Request.CreateErrorResponse(HttpStatusCode.NotFound, message);
            throw new HttpResponseException(errorResponse);
        }
        var response = Request.CreateResponse(HttpStatusCode.OK, customer);
        response.Content.Headers.Expires = new DateTimeOffset(DateTime.Now.AddSeconds(300));
        return response;
    }
    
    // CASE #4
    public HttpResponseMessage Get(string id)
    {
        var customer = _customerService.GetById(id);
        if (customer == null)
        {
            var message = String.Format(&quot;customer with id: {0} was not found&quot;, id);
            var httpError = new HttpError(message);
            return Request.CreateErrorResponse(HttpStatusCode.NotFound, httpError);
        }
        var response = Request.CreateResponse(HttpStatusCode.OK, customer);
        response.Content.Headers.Expires = new DateTimeOffset(DateTime.Now.AddSeconds(300));
        return response;
    }


#Update#

To help further demonstrate cases #2,3,4 the following code snippet highlights several options that &quot;can happen&quot; when a customer is not found...

    if (customer == null)
    {
        // which of these 4 options is the best strategy for Web API?

        // option 1 (throw)
        var notFoundMessage = new HttpResponseMessage(HttpStatusCode.NotFound);
        throw new HttpResponseException(notFoundMessage);

        // option 2 (throw w/ HttpError)
        var message = String.Format(&quot;Customer with id: {0} was not found&quot;, id);
        var httpError = new HttpError(message);
        var errorResponse = Request.CreateErrorResponse(HttpStatusCode.NotFound, httpError);
        throw new HttpResponseException(errorResponse);

        // option 3 (return)
        var message = String.Format(&quot;Customer with id: {0} was not found&quot;, id);
        return Request.CreateErrorResponse(HttpStatusCode.NotFound, message);
        // option 4 (return w/ HttpError)
        var message = String.Format(&quot;Customer with id: {0} was not found&quot;, id);
        var httpError = new HttpError(message);
        return Request.CreateErrorResponse(HttpStatusCode.NotFound, httpError);
    }


  [1]: http://www.asp.net/web-api/overview/web-api-routing-and-actions/exception-handling

Throw HttpResponseException or return Request.CreateErrorResponse?

Is it a normal occurrence for an **HTTP GET Request** to have a response with status code `204 - No Content`? Like, is this semantically correct concerning what an HTTP GET is supposed to accomplish? I know that a `204 - No Content` is *okay* for an **HTTP POST-Request**. For GET request, if no data is to be sent back, is the 204 status code appropriate? Should I use 404, or just stick to 200 for success but have an empty response?

The **use case** for this question is a Java application that I am writing for Google App Engine. I am sending a request to a servlet, but the data to be sent back to the client will be transmitted through a Channel API socket instead of in the HTTP Response. Currently, my client sends a POST with no content in the request body and waits for a 204 response back from the servlet before polling the Channel API socket. Because no data I being sent in the body of the request, I am debating whether it makes more sense for me to send a GET instead of a POST.

HTTP Get with 204 No Content: Is that normal

I&#39;m upgrading our REST API endpoints and I want to notify clients when they are calling the to-be-deprecated endpoint.  
What header should I use in the response with a message along the lines of &quot;This API version is being deprecated, please consult the latest documentation to update your endpoints&quot;

Convention for HTTP response header to notify clients of deprecated API

Error message &quot;Forbidden You don&#39;t have permission to access / on this server&quot;

I have build a .net4.5 ASP.NET MVC4 web app which works fine locally (IIS Express &amp; dev server) but once i deploy it to my web server it throws the 403 error. I have installed .Net 4.5RC on the server and even tried the 
`aspnet_regiis -i`
bit that everyone recommended for their issues with previous versions of MVC/.Net but it did not help.

Any ideas?

**EDIT**:
More info about the situation. The server is 32bit and I have 4 other MVC3 applications that work fine. It is just my MVC4 app that is not working.

MVC4 HTTP Error 403.14 - Forbidden

I installed the elmah.mvc nuget package and kept the default configuration of that sans setting up sending an email and plugging it into a SQL database.

On my local machine when I use the Visual Studio host, I can open my app and access /elmah fine to see a report of the errors. However, when I try and access /elmah on production, I get two errors, first I get a `403 access is denied` server error. Then in my email (from elmah) I get:

    System.Web.HttpException: Server cannot set status after HTTP headers have been sent.

Anyone know what is going on here and how to fix? Thanks.

I tried the following so far as suggested by the answers below:

In `&lt;system.webServer&gt;`

    &lt;handlers&gt;
      &lt;add name=&quot;elmah&quot; verb=&quot;GET&quot; path=&quot;elmah.axd&quot; type=&quot;Elmah.ErrorLogPageFactory, Elmah&quot;/&gt;
    &lt;/handlers&gt;

And in `&lt;system.web&gt;`

    &lt;httpHandlers&gt;
    &lt;add verb=&quot;POST,GET,HEAD&quot; path=&quot;elmah.axd&quot; type=&quot;Elmah.ErrorLogPageFactory, Elmah&quot; /&gt;
    &lt;/httpHandlers&gt;

I tried setting the path to both `elmah.axd` and simply `~/elmah`. All still give the same error, and still works locally, but not in production.

**Edit:** It actually also works when I remote into the server and access it via browser on there (not using localhost, but the actual site address). So what permission am I not having? Seems like it&#39;s at the server level.

Can&#39;t access /elmah on production server with Elmah MVC?

I am writing a small Java program to get the amount of results for a given Google search term. For some reason, in Java I am getting a 403 Forbidden but I am getting the right results in web browsers. Code:

    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.net.URL;
    
    
    public class DataGetter {
    
    	public static void main(String[] args) throws IOException {
    		getResultAmount(&quot;test&quot;);
    	}
    	
    	private static int getResultAmount(String query) throws IOException {
    		BufferedReader r = new BufferedReader(new InputStreamReader(new URL(&quot;https://www.google.com/search?q=&quot; + query).openConnection()
    				.getInputStream()));
            String line;
            String src = &quot;&quot;;
            while ((line = r.readLine()) != null) {
            	src += line;
            }
            System.out.println(src);
            return 1;
    	}
    
    }

And the error:

    Exception in thread &quot;main&quot; java.io.IOException: Server returned HTTP response code: 403 for URL: https://www.google.com/search?q=test
    	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source)
    	at DataGetter.getResultAmount(DataGetter.java:15)
    	at DataGetter.main(DataGetter.java:10)

Why is it doing this?

403 Forbidden with Java but not web browser?

I was trying to __scrape__ a website for practice, but I kept on getting the HTTP Error 403 (does it think I&#39;m a bot)?

Here is my code:

    #import requests
    import urllib.request
    from bs4 import BeautifulSoup
    #from urllib import urlopen
    import re
    
    webpage = urllib.request.urlopen(&#39;http://www.cmegroup.com/trading/products/#sortField=oi&amp;sortAsc=false&amp;venues=3&amp;page=1&amp;cleared=1&amp;group=1&#39;).read
    findrows = re.compile(&#39;&lt;tr class=&quot;- banding(?:On|Off)&gt;(.*?)&lt;/tr&gt;&#39;)
    findlink = re.compile(&#39;&lt;a href =&quot;&gt;(.*)&lt;/a&gt;&#39;)
    
    row_array = re.findall(findrows, webpage)
    links = re.finall(findlink, webpate)
    
    print(len(row_array))
    
    iterator = []

The error I get is:

     File &quot;C:\Python33\lib\urllib\request.py&quot;, line 160, in urlopen
        return opener.open(url, data, timeout)
      File &quot;C:\Python33\lib\urllib\request.py&quot;, line 479, in open
        response = meth(req, response)
      File &quot;C:\Python33\lib\urllib\request.py&quot;, line 591, in http_response
        &#39;http&#39;, request, response, code, msg, hdrs)
      File &quot;C:\Python33\lib\urllib\request.py&quot;, line 517, in error
        return self._call_chain(*args)
      File &quot;C:\Python33\lib\urllib\request.py&quot;, line 451, in _call_chain
        result = func(*args)
      File &quot;C:\Python33\lib\urllib\request.py&quot;, line 599, in http_error_default
        raise HTTPError(req.full_url, code, msg, hdrs, fp)
    urllib.error.HTTPError: HTTP Error 403: Forbidden


Problem HTTP error 403 in Python 3 Web Scraping

I am trying to send an Ajax POST request using Jquery but I am having 400 bad request error.

Here is my code:

    $.ajax({
      type: &#39;POST&#39;,
      url: &quot;http://localhost:8080/project/server/rest/subjects&quot;,
      data: {
        &quot;subject:title&quot;:&quot;Test Name&quot;,
        &quot;subject:description&quot;:&quot;Creating test subject to check POST method API&quot;,
        &quot;sub:tags&quot;: [&quot;facebook:work&quot;, &quot;facebook:likes&quot;],
        &quot;sampleSize&quot; : 10,
        &quot;values&quot;: [&quot;science&quot;, &quot;machine-learning&quot;]
      },
      error: function(e) {
        console.log(e);
      }
    });

It Says: Can not build resource from request.
What am I missing ?

Getting 400 bad request error in Jquery Ajax POST

I have a JSON request which I&#39;m posting to a HTTP URL. 

Should this be treated as `400` where `requestedResource` field exists but `&quot;Roman&quot;` is an invalid value for this field? 

    [{requestedResource:&quot;Roman&quot;}] 

Should this be treated as `400` where `&quot;blah&quot;` field doesn&#39;t exist at all?

    [{blah:&quot;Roman&quot;}]

400 BAD request HTTP error code meaning?

I&#39;m wondering if it is correct to return `HTTP 200 OK` when an error occurred on the server side (the error details would be contained inside the response body).

Example:

 1. We&#39;re sending `HTTP GET`
 2. Something unexpected happened on the server side.
 3. Server returns `HTTP 200 OK` status code with error inside a response (e.g. `{&quot;status&quot;:&quot;some error occurred&quot;}`)

Is this the correct behavior or not? Should we change the status code to something else than 200? 

Returning http 200 OK with error within response body

When sending notifications to iOS users, for some of them I get response status code 400 (BadDeviceToken) or code 410 (Unregistered).

From Apple documentation about &quot;BadDeviceToken&quot;:

&gt; The specified device token was bad. Verify that the request contains a valid token and that the token matches the environment.

What is the meaning of &quot;bad&quot;? I know for a fact that the device token was valid at some earlier time. What does a user do to make its device token bad? 

From documentation about &quot;Unregistered&quot;:

&gt; The device token is inactive for the specified topic.

Does this necceserally mean that the app has been deleted? Or there can be some other reasons for this response. 


Content Type	Original Author	Original Content on Stackoverflow
Question	David Peden	View Question on Stackoverflow
Solution 1 - Http Headers	Tim Pote	View Answer on Stackoverflow

What is the most appropriate HTTP status code to return if a required header is missing?

Http Headers Problem Overview

Http Headers Solutions

Solution 1 - Http Headers

Why is 'Updating the Git index failed' displayed

Why the Extension is "momd" but not "xcdatamodel" when search the path for the Model file

Attributions