Aion Proxy: Patch Traffic, Data Budget and the Responsibility Framework

The Aion client does not exhibit a single network behavior; it houses several components that operate independently of one another. The launcher performs a version check and downloads files, the login step verifies the account, and the game itself proceeds over a separate connection. When you define an exit, these components may not all take the same path.

This distinction produces a practical result: do not assume the setup is correct just because patches download without issue. Downloads run over HTTPS and are unrestricted on most networks; the game connection, by contrast, may fall outside the well-known web ports and can be blocked on the same network.

Finally, expectations about scope need to be set straight. An exit only changes the path packets take; it does not change the client components running on your machine, the region your account is tied to, or the scope of the terms of service.

The client's network surface: which component talks to what?

The picture you see on the network side is layered. At the top sits the launcher; it requests the version list, computes the difference and downloads the missing files. This traffic is large and sustained, but it occurs only at update time and uses the same transport as the web.

One layer down is account verification. It is a small, short-lived and encrypted exchange; this is where your exit address is visible on the server side. Then the game protocol comes into play and establishes a TCP connection that stays open for the session. This connection carries little data but is sensitive to interruption.

The fourth item is out-of-game voice chat applications, which mostly use UDP. If a tunnel carries only TCP, this traffic falls outside the scope and goes out directly; the distinction is the HTTP CONNECT method article.

The fifth item is the protection components running alongside the client. These inspect the processes and file integrity on your machine; they operate independently of your network route, and defining an exit neither hides nor changes that inspection.

This layered structure also determines the troubleshooting order. First determine which layer works: if the launcher can fetch updates, web transports are unrestricted; if you get an error at the login step, the authentication endpoint cannot be reached; if login goes through but the game does not open, the issue is most likely the target port. Proceeding without mixing up the layers cuts the number of settings to try by several times.

How do installation and patch downloads consume your quota?

A large-scale MMORPG client can run to tens of gigabytes on first installation; version updates take up as much space as the files that changed. That figure varies with your installation and version, but the ordering is almost always the same: the first download is the dominant item, patches come second, and the game session itself is small next to them.

If you use an exit billed on transferred data, this ordering translates directly into your bill. A single installation download can burn more quota than months of game sessions combined. For the calculation method, see the bandwidth calculation article.

A practical rule follows from this: downloading and playing do not have to take the same path. Doing the first installation and large patches over your normal line and moving only the game connection to the exit is both faster and cheaper in most scenarios.

Download endpoint selection and the effect of domain name resolution

Large files are served not from a single server but from a geographically distributed network. What determines which point answers you is where the domain name query is made from. If the query goes out from your network, a nearby endpoint answers; if it is made by the exit, the endpoint in the exit's region answers.

There is a common trap here. If you resolve the domain locally and establish the connection through a distant exit, you end up connecting from a faraway country to a distribution point that was chosen because it is near you. The result is losing the advantage on both sides and the download progressing more slowly than expected (where DNS is resolved in SOCKS5).

For this reason, prefer a simple setup during the download stage: either a fully direct connection, or an exit that also handles resolution. A mixed configuration produces the slowest result. If you want to measure, download the same file under both configurations and compare the time (how to test proxy speed).

A second factor is how many connections the download opens. File downloaders establish parallel sessions to increase speed; if your exit's concurrent connection ceiling is low, these requests queue up or are rejected and the download progresses more slowly than expected. Reading the limit in the panel saves you from looking for the problem in the wrong place (concurrent connection limit).

Where does latency accumulate, and which item is in your hands?

It helps to think of total time in four items: your access network, the leg from you to the exit, the leg from the exit to the game server, and the server processing and sending back. On a direct connection the two middle items collapse into one; when an exit is added, both count.

Only two of these items are under your control. You can improve your access network with a wired connection and a properly set up local network; you determine the exit location when you choose it. The server's processing time and the target's location do not change.

When choosing a location, you must know where the target is. If you are going to connect to a server in Europe, an exit within Europe is reasonable; an exit on another continent lengthens the path needlessly. The options are gathered together in the location list.

Finally, consistency matters more than the average. An exit's behavior over the course of the day is a variable that a one-off measurement does not reveal; that is also why reading the provider's commitment is meaningful (what uptime and SLA tell you).