= CDN and Mudfish =

{{{#!wiki caution
'''Notice'''

 * At Mudfish Cloud VPN v5.14.1 or above, it starts to support "Exclude rules" which found under "Setup -> Program" menu. You can exclude the web traffics or customize traffics you want to exclude.
 * From Mudfish Cloud VPN v5.5.4, it supports [[https://docs.mudfish.net/en/docs/mudfish-features/fullvpn-mode/|Full VPN mode]] + [[https://docs.mudfish.net/en/docs/mudfish-features/wfp-item-mode/|WFP Item mode]] combination.  You can add the exceptional rules based on process name or CIDR network format while using Full VPN mode.
 * If you're using Mudfish Cloud VPN v5.2.6 or above, please consider to enable 'Credit Saving Mode' which found under 'Setup -> Program' menu.  We expect that it could soothe this issue by speed-limiting the non-game traffics.
}}}

Sometimes some users of mudfish report a problem regarding to their mudfish credits because they encounter a huge reduction of mudfish credits within several hours even if they are not using [[https://mudfish.net/docs/en/vpn/features/fullvpn_mode.html|Full VPN mode]].

When I checked and analyzed this issue deepyly, most of these cases are related with CDN (Content Delivery Network) because some mudfish game items include a host (domain based) information.

== Linking with CDN ==

A reason why mudfish item includes a host (domain based) information is clear that it's to bypass the regional restriction policy of the game server.  As you might know, most of game publishers use or depend on CDN (Content Delivery Network) to serve their download or patch files or steaming to the end users, sometimes it's required to be a mandatory to access the game server because the game publisher doens't want to let users access their contents if they're from other countries not allowed.  So if there's a blocking policy based on GetIP at CDN level, the mudfish user can't not access the game without bypassing CDN.

The problem is that in some cases, connections to CDN could be redirected by Mudfish and consumes the mudfish credit.

== Known problems ==

Due to above reason, sometimes mudfish credits could be consumed if you tried to download or do streaming while Mudfish is running even if you're not using [[https://mudfish.net/docs/en/vpn/features/fullvpn_mode.html|Full VPN mode]].

And without luck some, normal HTTP requests (no relations to the game) could go through mudfish nodes because the DNS server of CDN company responses with the same IP of cache servers.

== Known items ==

The following game items have an issue:

 * AbemaTV (Akamai, Fastly, Google)
 * Black Desert
 * Elsword
 * Escape from Tarkov
 * [[Final Fantasy XIV - A Realm Reborn]]
 * Granblue Fantasy
 * Heroes of the Storm
 * krunker.io (Cloudflare)
 * [[League of Legends]]
 * Nexus: The Kingdom of the Winds
 * niconico (Google)
 * [[Overwatch]]
 * Path of Exile
 * Phantasy Star Online 2
 * Phantasy Star Online 2 New Genesis
 * [[PLAYERUNKNOWN'S BATTLEGROUNDS]]
 * PUBG Lite (Google)
 * Ragnarok M (Google)
 * S4 League (Google)
 * Tree of Savior
 * [[VALORANT]]

== How to avoid ==

 1. Because the mudfish works based on the OS's routing table rather than hooking OS's internal APIs, this issue could happen.  If your game is working fine with Proxifier, I think you can check [[https://mudfish.net/docs/en/proxy/proxifier.html|Mudfish with Proxifier]].
 2. Or please turn off Mudfish while you're downloading the game file or patching the game update.  This doesn't mean you need to terminate/exit the Mudfish completely.  Disconnect the mudfish connection on the mudfish dashboard is enough.
 3. Or please terminate other programs which makes massive network traffics such as web browser or !BitTorrent clients.
 4. Or you can change your data plan from PPT (Pay-Per-Traffic) to '''Subscription''' to use Mudfish at the fixed price.
 5. Or from Mudfish Cloud VPN v5.5.4, it supports [[https://docs.mudfish.net/en/docs/mudfish-features/fullvpn-mode/|Full VPN mode]] + [[https://docs.mudfish.net/en/docs/mudfish-features/wfp-item-mode/|WFP Item mode]] combination.  You can add the exceptional rules based on process name or CIDR network format while using Full VPN mode.
 6. Or you can try to test with [[https://docs.mudfish.net/en/docs/mudfish-features/wfp-item-mode/|WFP Item mode]] if your game item supports this mode.
 7. At Mudfish Cloud VPN v5.14.1 or above, it starts to support "Exclude rules" which found under "Setup -> Program" menu. You can exclude the web traffics or customize traffics you want to exclude.