If we have a customer with a cname record, sub1.notourserver.com, pointing to something like abcdefg.ourserver.com, we read the host as sub1.notoursever.com. Is it possible for us to somehow get the value abcdefg.ourserver.com from this request? We have a subdomain route setup, but it is not picking up on it because the host does not match our SERVER_NAME config setting.
HTTPÂ does not provide that information, and so neither can Flask/Werkzeug. You need to use in Flask/Werkzeug the (sub)domain names actually used by clients.
If you really can not do that, you need to hack a WSGI middleware that maintains an explicit mapping (or makes DNS requests) and patches environ['HTTP_HOST'].
Related
I see that AWS posts a json file with all their IP ranges here (Actual JSON HERE)
I was thinking of using this json file to check against every incoming connection in my node app but firstly I was wondering if it would be far too much overhead to loop through it for every request?
Secondly, I wasn't sure exactly how to go about this, as many IP ranges are formatted differently eg.
43.250.192.0/24
46.51.128.0/18
27.0.0.0/22
I'm not too sure what them suffix's mean.
Has anyone don something similar?
Your first concern is correct - it's a lot of overhead to loop through Amazon's IPs for each request. This should be handled at the firewall.
Nevertheless, the ip_prefix field Amazon is providing can be used to ensure valid IP addresses exist within that subnet. The node-ip module can help with this. It has a cidrSubnet function that can be used to test a prefix against a user's IP. See the below coffeescript.
ip = require 'node-ip'
amazonIPs = require 'amazonIPs.json'
someUsersIP = '192.168.1.190'
for prefix in amazonIPs.prefix
if ip.cidrSubnet(prefix).contains(someUsersIP)
console.log "#{someUsersIP} is within the #{prefix} range"
i've noticed that on LoLReplays webpage you can now stream live games via their program LoLRecorder. I found this code on their page
href="lrf://spectator spectator.eu.lol.riotgames.com 2nHvYdkaSjjqC7f+mtHQeIhFcUSQLFu5 488978485 EUN1 3.01.0.1"
And i've tried a little to stream from my own (already recorded) game. But all i get is unable to find match. My question is: Does anyone here know how this works?
Thanks!
TL;DR; You can't stream anything, but you can open LoLReplay in spectator mode for a specific match.
Try reinstalling LoLReplay, seemed to fix the issues that I was having.
The title of your post is somewhat misleading as no streaming actually happens - all that the link does is open LoLReplay on your local machine and pass in the details of the match you want to spectate.
This will only work for matches that are happening now, as it connects in a similar way as the LoL client does when you spectate a match.
Calling LoLReplay from the browser
The links seem to be formatted as follows:
lrf://spectator [Observer IP Address][:Observer Port] [Observer Encryption Key] [Game Id] [Platform Id] [Client Version?]
lrf://spectator tells LoLReplay to open up in spectator mode.
Observer IP Address is required and can either be a hostname or an IP address. The hostname is usually in the format spectator.[eu/na/br/etc.].lol.riotgames.com.
Observer Port is optional, I believe it defaults to 8088 which appears to be the default spectator mode port.
Observer Encryption Key... is a required per-match encryption key.
Game Id is a required, per-match integer id.
Platform Id is a more specific version of the region, I guess relating to how Riot have grouped their servers. For example EUW1.
Client Version, the last field appears to be a version number - I can only assume this is either the version of the client that LoLReplay is using OR the version of the client the players in the match are using.
How to find IP address, encryption key etc.
Edit: you can now grab all the info you need using the official Riot API, you just need the SummonerId of the user you're querying for. See current-game API docs for usage.
What is the "official" url I should use if I want to indicate just a resource that fails as soon as possible?
I don't want to use www.example.com since its an actual site that accepts and responds requests and I don't want something that takes forever and fails from a timeout (like typing using a random, private IP address can lead to).
I thought about writing an invalid address or just some random text but I figured it wouldn't look as nice and clear as "www.example.com" is.
If you want an invalid IP, trying using 0.0.0.0.
The first octet of an IP cannot be 0, so 0.0.0.0 to 0.255.255.255 will be invalid.
For more info, see this question: what is a good invalid IP address to use for unit tests?
https://www.rfc-editor.org/rfc/rfc5735:
192.0.2.0/24 - This block is assigned as "TEST-NET-1" for use in documentation and example code. It is often used in conjunction with domain names example.com or example.net in vendor and protocol documentation. As described in [RFC5737], addresses within this block do not legitimately appear on the public Internet and can be used without any coordination with IANA or an Internet registry. See[RFC1166].
Use .invalid, as per RFC 6761:
The domain "invalid." and any names falling within ".invalid." are special [...] Users MAY assume that queries for "invalid" names will always return NXDOMAIN responses.
So a request for https://foo.invalid/bar will always fail, assuming well-behaved DNS.
Related question: What is a guaranteed-unresolvable (but valid) URL?
if it's in a browser then about: is fairly useless - but it would be better if your service returned the correct HTTP status code - e.g. 200 = good, 404 = not found, etc.
http://en.wikipedia.org/wiki/List_of_HTTP_status_codes
I have a domain name abc.mydomain.com
This is a https URL ( http redirects to the https version )
However, I now need to be able to handle www.abc.mydomain.com to redirect to abc.mydomain.com
How can I do this? is it a webserver level redirect or something to be done at the DNS resolution.
I know my URL already has the "abc" as its sub-domain and I dont need a "www", however, we noticed that "www.news.google.com" resolves to "news.google.com" - hence wondering if I can achieve it too
Thank you!
In short, yes.
DNS works on a hierarchy - the DNS server for .com can delegate down to the nameserver for your domain which can delegate further, or just answer the requests, which needs to be your first step.
If you use Bind style zone files, you can do something like (where 123.45.67.89 is your webserver IP address):
* IN A 123.45.67.89
Then, you also need your webserver to resolve that to the right virtual host/redirect as desired.
edit: more to the address than I had given in the example. It has a subfolder?? https://some_external_website.com/bh/public
Is it correct to say that xxx is a subdomain of yyy.com written as xxx.yyy.com
email I sent to the BIG IT dept: names changed to protect the innocent
Additional Info:Please create an entry that will map the subdomain xxx.yyy.com to https://some_external_website.com/bh/public
this is an externally hosted web application. Please call me if you have any questions.
--end of message--
About an hour later I get a call because they don't know what I want, I was told that xxx is not a subdomain. The correct definition subdomain it would have to be xxx.www.yyy.com.
The first component of a "domain name" is always the hostname. We can view a domain name as consisting of a hostname followed by one or more domain components. Each domain component is a subdomain of the component to it's immediate right. In xxx.yyy.zzz, xxx is the hostname (typically of a single machine, unless some kind of load balancing is going on), and yyy is a sub-domain of the zzz top-level domain. Colloquially we usually refer to zzz as the top-level domian, yyy as "the domain", and all other names to the left (excluding leftmost which is the hostname) as sub-domains. I'll add the disclaimer that I am by no means a DNS expert but to the best of my knowledge this would be why they aren't understanding your question. The hostname is not a "domain" per-se, i.e. it defines a single machine rather than a group (domain) of machines.