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feat: allow connection with pre-configured socket

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#1,054 7 comments 1 reaction 0 assignees View on GitHub

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
38/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Quiet
Tech stack
postgresql, python
Domain
databases

Research direction

Start by tracing asyncpg's connection setup and compare the socketFactory, DialFunc, and PyMySQL references linked in the issue. Determine how an existing socket and optional startTLS would fit the API, then verify completion with coverage for both TLS choices and tunneled connections.

Written by the indexing model from the issue text.

Description

I'd like to add support for creating a postgres connection over an existing socket like object. In this approach startTLS can or cannot be used depending on the caller. This lines up similarly with what we have in Java (socketFactory connection param, driver code), Go (pgx DialFunc) (these two are slightly different as they allow specifying a creator/generator func that creates the socket, while here we could just pass in the socket directly but the extent of the feat is the same), and other Python libraries (pymysql, and pg8000)

The equivalent pymysql PR that introduced this change explains the feature really well https://github.com/PyMySQL/PyMySQL/pull/355

The benefit of this feature is that it allows the user to specify their own secure tunnel to connect over (such as ssh).

Is this sort of feat possible for asyncpg?

Dominant language
Python
Stars
8.1k
Forks
469
Avg merge
2d 20h
Merged PRs (30d)
9

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