Login Sequence
This page documents the login sequence of Genshin Impact from a networking/protocol standpoint. The process can be divided into two sections.
This page is nowhere near done.
Authentication and Dispatch
When the game is first launched to the Celestia screen, it follows the HTTP Protocol for account authentication and dispatching.
Security File
Upon launch, the first thing the client does is query the /query_security_file endpoint. Further research on this is needed; very little is currently known about the workings of this system. It is believed to be used to configure the client-side anticheat, and the client will silently accept an empty string, and this seems to disable the anticheat entirely.
Region List
Following this, the client will request the /query_region_list endpoint, gathering a list of applicable regions that the client may play on. A list of regions and information about them is included below:
| Internal Name | Display Name | Region UID prefix(es) | Dispatch URL |
|---|---|---|---|
| cn_gf01 | 天空岛 (Celestia) | 1, 2, 3 | cngfdispatch.yuanshen.com |
| TODO | 世界树 (Irminsul) | 5 | TODO |
| Internal Name | Display Name | Region UID prefix(es) | Dispatch URL |
|---|---|---|---|
| os_usa | America | 6 | osusadispatch.yuanshen.com |
| os_euro | Europe | 7 | oseurodispatch.yuanshen.com |
| os_asia | Asia | 8, 18 (after version 4.4) | osasiadispatch.yuanshen.com |
| os_cht | TW, HK, MO | 9 | oschtdispatch.yuanshen.com |
Overseas clients may play on any overseas region they wish, but CN clients may only play on the region that is applicable to their account type. (TODO: research more, I don't have a CN account). The list of regions seems to be locally cached to some extent, but the exact details of this aren't known.