spdy | featured SPDY library for the Go language
kandi X-RAY | spdy Summary
kandi X-RAY | spdy Summary
A full-featured SPDY library for the Go language. Note that this implementation currently supports SPDY drafts 2 and 3. See these examples for a quick intro to the package. Note that using this package with Martini is likely to result in strange and hard-to-diagnose bugs. For more information, read this article. As a result, issues that arise when combining the two should be directed at the Martini developers.
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QUESTION
I have an application (React SPA) that calls a bunch of servers on different subdomains of the application domain, i.e.:
- the web app sits at
foo.bar.com, - and talks to
api.foo.bar.comandmedia.foo.bar.com.
When accessing api.foo.bar.com, I get an error from the browser (be it Edge, Chrome, or Firefox) telling me that the origin (foo.bar.com) is different from the value of the Access-Control-Allow-Origin response header. However, by inspection of the response, they are the same:
(I unfortunately have to obfuscate the address.)
Those apps are hosted on Kubernetes; the ingress is NGINX, and it's is not providing CORS (cors-enabled annotation is false). Both applications (api and media) are Express apps, and both have the same CORS configuration allowing the specific origin.
I'm wondering if this has something to do with the redirect - the call to the media... endpoint returns a redirect (302) whose Location is a api... address.
Other than that, I have no clue what could be wrong. Something is, for sure, because all browsers agree that my request should be blocked (on account of the origin).
In all cases, I've checked the address multiple times for typos, ending forward-slashes, etc. I've called OPTIONS on those endpoints with cURL and Postman, using all headers or just a few. They always answer the correct address.
Additional information, as requested:
Preflight request: ...ANSWER
Answered 2021-Nov-27 at 10:22The error message—I'm using dummy URLs and origins below—from the browser can be a bit confusing:
Access to XMLHttpRequest at 'https://api.example.com/' (redirected from 'https://media.example.com/') from origin 'https://example.com' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: The 'Access-Control-Allow-Origin' header has a value 'https://example.com' that is not equal to the supplied origin.
The key here is that, as sideshowbarker hinted at in his comment, because your first preflighted request to https://media.example.com/ responds with a cross-origin redirect to https://api.example.com/, the browser performs another whole CORS access-control check for that resource. However, because the redirect resulting from the first preflighted request happens to be cross-origin, the browser sets the origin of the second preflight request (which the error message refers to as the "supplied origin"), not as https://example.com, but as the null origin!
Here's a rundown of what is likely happening:
Because https://api.example.com likely doesn't (and shouldn't!) allow the null, the second access-control check fails and you get that annoying CORS error.
Resist the temptation to allow the null origin on https://api.example.com/, as doing so has serious security ramifications: it amount to voiding the protection that the Same-Origin Policy provides.
Instead, you should get rid of that redirect from https://media.example.com/ to https://api.example.com/ and make your frontend request the https://api.example.com/ resource directly.
Alternatively, if you cannot completely get rid of the redirect but you can change its destination, make it a same-origin redirect (from somewhere https://media.example.org to elsewhere on https://media.example.org).
QUESTION
I am able to successfully log into a website using Firefox but having trouble replicating that log in using node-fetch. There are three stages to the log-in process:
- go to /login and website responds with sessionToken (this part is working OK)
- enter email and password alongside sessionToken and website responds with sessionToken and authToken (this is the part I am having trouble with)
- request with sessionToken and authToken to /portal and website responds with the HTML I am trying to access
in Firefox Dev Tools, I can see both the working headers and working request body. When I click on "Request" in Dev Tools, I see a 'Form data' heading with the proper values of 'email' and 'password'. When I click on "Headers" in Dev Tools, here is the successful Firefox request:
...ANSWER
Answered 2021-Nov-06 at 23:20node-fetch automatically follows redirects. It will automatically go to the next redirected url (Location http header value).
If you want to catch the 301 or 302 call, you can set redirect property to manual in the options like redirect: "manual", this way you manage the redirection yourself
For example the following code will catch the 301 call (it'll do the same for your 302 in theory, implemented here):
QUESTION
I have an app currently in development. All works well on my local machine but on my live server I am getting an issue I can't solve between the http and https versions of the site. Anyone know why I am getting a difference between the display of these two domains?
I have installed the SSL certificate on the server but have been stuck for days trying to figure out what is happening here.
Here is what my www file looks like:
...ANSWER
Answered 2021-Sep-10 at 06:57After lots of debugging I found what was causing this issue. This was caused by Phusion Passengers instantiation of the application.
It simply uses two different paths when initializing the app. One for http and one for https.
The standard path it uses for http config is:
/etc/apache2/conf.d/userdata/std/2_4/YOUR_USERNAME/YOUR_DOMAIN/YOUR_APP_NAME.conf
Not sure why but Phusion Passenger does not automatically create the correct path for SSL when you register your application in cpanel, meaning it can not find a path for https application config.
I had to manually create the folders and then copy the config file from the above path to it. It looks like this:
/etc/apache2/conf.d/userdata/ssl/2_4/YOUR_USERNAME/YOUR_DOMAIN/YOUR_APP_NAME.conf
If you update one config file you need to update the other as they should be identical.
The command line from the [cpanel documentation][1] did not work for me because the folders did not exist and were not automatically created when the app was registered.
The command line I'm referring to from the above documentation is:
QUESTION
Getting back to Android after a while. I just purchased an EV certificate and am trying to connect using SSL/TSL to my web service. I'm getting:
...ANSWER
Answered 2021-Jul-23 at 15:14As suggested by Joy and alexrait, the problem was not specifying the SSL context. Evidently, android doesn't try the best ones by default. :(
So, I added the code here:
QUESTION
Yet another question concerning a JSON object whose key's values are undefined. So I make this request:
...ANSWER
Answered 2021-Jul-20 at 15:23Axios returns an object with items such as status, statusCode, loading etc... One of those is data which contains the response data from your endpoint. Your backend looks to be returning a data object also.
So your answer should be to read response.data.data.attributes. A bit messy I realise but maybe you can change your backend to not wrap the response in data also.
QUESTION
I'm trying to set up a server, which is handling 3rd party requests, IE the domain it's coming from is our client's, but I need to proxy requests to our API through this Express application. I need to store some information in a session, for which I'm using a Redis Cache to store the actual data.
I've been running in a series of CORS problems while attempting to do this. So far, this is the configuration I've got. It works find on my local development machine simulating both servers on different ports, but when I deploy, I get a CORS No Allow Credentials error on Preflight OPTION, and a NS_ERROR_DOM_BAD_URI on the subsequent POST.
I've basically hit a stone wall in figuring this out. I thought it was the origin, but I have defined an origin whitelist and that didn't help.
Any help for my configuration would be appreciated
...ANSWER
Answered 2021-Jul-04 at 11:13The answer to this question turned out to be a problem with Azure AppServices overriding the CORS settings of my Application. AppServices CORS settings will take precedence if they are defined. You must disable CORS on the AppService to allow the CORS settings on the Node Application to work.
QUESTION
I'm getting Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://mysiteapi.domain.com/api/v1.0/operations/1. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing). when trying to do a PUT request to my .NET5 WebAPI.
These are the methods I've added CORS to the API:
...ANSWER
Answered 2021-Jan-28 at 21:42Include this inside the xml just before in web.config to remove webdav which might have disabled PUT requests.
QUESTION
After having developed my application in an unsecured context using HTTP 1.1, I have now deployed it to a HTTP 2 server using HTTPS. All fine and dandy. For 30 seconds... :)
After that, the socket disconnects and connects again. And again. And again.
What I saw missing from the server response are the Connection: keep-alive and Keep-Alive: timeout=5 headers that I get on my HTTP 1.1 server. The code is absolutely identical and communication does work just fine.
I suppose socket.io has some smart way of working over HTTP 2 but I couldn't find anything about this in the documentation.
It's also interesting that the client DOES request the keep-alive header, despite it running on HTTP 2. But alas, nothing is returned and the socket disconnects :(
I noticed somebody tried using SPDY via Express:
Getting socket.io, express & node-http2 to communicate though HTTP/2
I would consider this as a possible solution, but I would like this to work without SPDY as well.
...ANSWER
Answered 2020-Nov-26 at 07:25After encountering the EXACT same issue when using the WebSocket object in the browser, I dug deeper and found this in the documentation of the Google Load Balancer service we're using:
The timeout for a WebSocket connection depends on the configurable backend service timeout of the load balancer, which is 30 seconds by default. This timeout applies to WebSocket connections regardless of whether they are in use. For more information about the backend service timeout and how to configure it, see Timeouts and retries.
Check this article for more info about how to config your Load Balancer to correctly handle WebSockets:
QUESTION
I am using ckEditor with the file browser, filemanager plugin in it. What i am trying to achieve when i configure the CKeditor I am able to browse the file in a certain folder .. but when i try to upload the file through it I am getting an error of 400 Bad Request may be there is something which I need to do ?
Following is my code
...ANSWER
Answered 2020-Nov-03 at 11:44Based on the details about your test request, it seems that you configured and enabled antiforgery token validation. If JavaScript client not set/include the token in request, which would cause 400 Bad Request error.
To fix it, as I mentioned in comment, we can apply IgnoreAntiforgeryToken Attribute to action method UploadFromEditor to skip antiforgery token validation.
Or set the token in request header to make the request can pass antiforgery token validation.
QUESTION
I would like to scrape all link for the formation in this website : https://www.formatic-centre.fr/formation/
Apparently the next pages are dynamically loaded with AJAX. I need to simulate those requests using FormRequest from scrapy.
That was I did, I look up for the parameters with developer tools : ajax1
I put those parameters into FormRequest but apparently if it didn't work, I need to include the header, that what I did : ajax2
But it didn't work either.. I'm guessing I'm doing something wrong but what ?
Here's my script, if you want (sorry it's quite long, because I put all the parameters and the headers) :
...ANSWER
Answered 2020-Oct-23 at 10:06You have some issues with how you format and send both your headers and the payload itself.
Also, you have to keep changing the page, so the server knows where you're at and what response to send back.
I didn't want to set up a new scrapy project but here's how I got all the links, so hopefully this will nudge you in the right direction:
And if it feels like a hack, well, because it is one.
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