[SR-8823] Implement URLSession.seekInputStream(to:)

[swift-ci]

Previous ID	SR-8823
Radar	rdar://problem/52194062
Original Reporter	Cellane (JIRA User)
Type	Bug
Status	Resolved
Resolution	Done

Additional Detail from JIRA

Votes	5
Component/s	Foundation
Labels	Bug
Assignee	None
Priority	Medium

md5: 5bafa2c77d80d0cdf603ca703676eeed

Issue Description:

Using the in URLSession.seekInputStream(to🙂 method in a Linux environment crashes the entire application on the following line:

https://github.com/apple/swift-corelibs-foundation/blob/master/Foundation/URLSession/NativeProtocol.swift#L264

There is an existing PR that implements the method to some degree, but would likely need some cleaning up before merging:

#1629

I think implementing this method is particularly important in a server-side environment where it’s causing a lot of random and difficult-to-debug crashes in Vapor projects.

[ddunbar]

+1, I've definitely observed this myself

[ddunbar]

@swift-ci create

[spevans]

The solution in #1629 was merged.