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[SR-12982] Foundation: Stream.getBoundStreams not available #3251

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weissi opened this issue Jun 11, 2020 · 2 comments
Open

[SR-12982] Foundation: Stream.getBoundStreams not available #3251

weissi opened this issue Jun 11, 2020 · 2 comments
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@weissi
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weissi commented Jun 11, 2020

Previous ID SR-12982
Radar rdar://problem/64947425
Original Reporter @weissi
Type Bug
Environment 
docker.io/swiftlang/swift:nightly-master-bionic
Swift version 5.3-dev (LLVM 6049ecf8a0, Swift 4205e46959)
Target: x86_64-unknown-linux-gnu
Additional Detail from JIRA
Votes 1
Component/s Foundation
Labels Bug
Assignee None
Priority Medium

md5: 7b395a96600be27ba3bccd448b599c4c

Issue Description:

I'm really not an expert in URLSession but I wanted to implement bidirectional streaming with it and I believe I require Stream.getBoundStreams for that (https://developer.apple.com/documentation/foundation/url_loading_system/uploading_streams_of_data).

But:

$ jw-docker-swift-master swift run
docker.io/swiftlang/swift:nightly-master-bionic
/Users/johannes/devel/URLSessionBidiStreaming/Sources/URLSessionBidiStreaming/main.swift:59:16: error: type 'Stream' has no member 'getBoundStreams'
        Stream.getBoundStreams(withBufferSize: 4096,
        ~~~~~~ ^~~~~~~~~~~~~~~

it seems like Streams.getBoundStreams isn't available on Linux.
@weissi
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weissi commented Jun 19, 2020

@swift-ci create

@mickeyl
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mickeyl commented Apr 30, 2021

Indeed, I spotted this just recently as well. It's kind of a showstopper for one of my projects which is based on a generic stream abstraction (bridging to different transport means like CoreBluetooth, ExternalAccessory, TTY, TCP, etc.).

I first thought it was just the convenience method for gathering the stream pair missing on Linux, but as a matter of fact, the whole `CFSocketStream` infrastructure is absent. I need to have a TCP stream socket pair on Linux – do you know of any existing projects (other than Swift-NIO, which is great in its own right, but too much of a hammer for this very nail) or shall we cooperate on a small socket stream implementation for Posix sockets?

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 5, 2022
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@mickeyl @weissi