libcurl-backed URLSession cannot communicate with ChromeDriver's HTTP server

[kateinoigakukun]

corelibs-foundation's URLSession backed by libcurl fails to communicate with ChromeDriver's HTTP server.

Reproducer

$ curl -LO https://storage.googleapis.com/chrome-for-testing-public/125.0.6422.78/linux64/chromedriver-linux64.zip
$ unzip chromedriver-linux64.zip
$ ./chromedriver-linux64/chromedriver-p 9515
$ swiftc main.swift && ./main
Error: Error Domain=NSURLErrorDomain Code=-1 "(null)"
Failed writing header

// File: main.swift
import Foundation
#if canImport(FoundationNetworking)
import FoundationNetworking
#endif

do {
  var request = URLRequest(url: URL(string: "http://127.0.0.1:9515/session")!)
  request.httpMethod = "POST"
  let _: (Data, URLResponse) = try await withCheckedThrowingContinuation { continuation in
    let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
      guard let data = data, let response = response else {
        let error = error ?? URLError(.badServerResponse)
        return continuation.resume(throwing: error)
      }
      continuation.resume(returning: (data, response))
    }
    task.resume()
  }
} catch {
  print("Error: \(error)")
  print(error.localizedDescription)
  exit(1)
}

Note that the above script works on macOS and corresponding curl CLI command (curl -X POST http://127.0.0.1:9515/session) returns a response well.

Platform

Ubuntu 22.04 (This should be reproducible on all platforms with corelisb-foundation in theory)

Toolchain version

DEVELOPMENT-SNAPSHOT-2024-05-15-a Swift version 6.0-dev (LLVM cef183591317ec7, Swift 66e311074bff491) Target: x86_64-unknown-linux-gnu