contrib: remove "persistent-https" remote helper

The "persistent-https" remote helper supposedly speeds up SSL operations
by running a daemon that keeps a connection open to a remote server. It
is effectively unmaintained nowadays: the last time it received an
update was in accb613afd2 (contrib/persistent-https: use Git version for
build label, 2016-07-20) and its parent commits to make it compile with
Go 1.7+.

This Go toolchain is somewhat dated by now though and unsupported. The
oldest still-supported toolchain is Go 1.23, which was released in
August 2024. It is not possible to compile the remote helper with that
Go version anymore:

    $ go version
    go version go1.23.8 linux/amd64
    $ make
    case $(go version) in \
    "go version go"1.[0-5].*) EQ=" " ;; *) EQ="=" ;; esac && \
    go build -o git-remote-persistent-https \
            -ldflags "-X main._BUILD_EMBED_LABEL${EQ}GIT_VERSION=2.49.0.943.g965a70ebf62"
    go: cannot find main module, but found .git/config in /home/pks/Development/git
            to create a module there, run:
            cd ../.. && go mod init
    make: *** [Makefile:31: git-remote-persistent-https] Error 1

The problem is that modern Go toolchains require a "go.mod" file, but we
don't have any such files. This requirement exists since quite a while
already, so it's clear that nobody has tried to use this remote helper
anytime recent.

Remove the remote helper.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 0 insertions, 82 deletions

diff --git a/contrib/persistent-https/main.go b/contrib/persistent-https/main.go
deleted file mode 100644
index fd1b107743..0000000000
--- a/contrib/persistent-https/main.go
+++ /dev/null
@@ -1,82 +0,0 @@
-// Copyright 2012 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// The git-remote-persistent-https binary speeds up SSL operations by running
-// a daemon job that keeps a connection open to a Git server. This ensures the
-// git-remote-persistent-https--proxy is running and delegating execution
-// to the git-remote-http binary with the http_proxy set to the daemon job.
-// A unix socket is used to authenticate the proxy and discover the
-// HTTP address. Note, both the client and proxy are included in the same
-// binary.
-package main
-
-import (
-	"flag"
-	"fmt"
-	"log"
-	"os"
-	"strings"
-	"time"
-)
-
-var (
-	forceProxy = flag.Bool("proxy", false, "Whether to start the binary in proxy mode")
-	proxyBin   = flag.String("proxy_bin", "git-remote-persistent-https--proxy", "Path to the proxy binary")
-	printLabel = flag.Bool("print_label", false, "Prints the build label for the binary")
-
-	// Variable that should be defined through the -X linker flag.
-	_BUILD_EMBED_LABEL string
-)
-
-const (
-	defaultMaxIdleDuration    = 24 * time.Hour
-	defaultPollUpdateInterval = 15 * time.Minute
-)
-
-func main() {
-	flag.Parse()
-	if *printLabel {
-		// Short circuit execution to print the build label
-		fmt.Println(buildLabel())
-		return
-	}
-
-	var err error
-	if *forceProxy || strings.HasSuffix(os.Args[0], "--proxy") {
-		log.SetPrefix("git-remote-persistent-https--proxy: ")
-		proxy := &Proxy{
-			BuildLabel:         buildLabel(),
-			MaxIdleDuration:    defaultMaxIdleDuration,
-			PollUpdateInterval: defaultPollUpdateInterval,
-		}
-		err = proxy.Run()
-	} else {
-		log.SetPrefix("git-remote-persistent-https: ")
-		client := &Client{
-			ProxyBin: *proxyBin,
-			Args:     flag.Args(),
-		}
-		err = client.Run()
-	}
-	if err != nil {
-		log.Fatalln(err)
-	}
-}
-
-func buildLabel() string {
-	if _BUILD_EMBED_LABEL == "" {
-		log.Println(`unlabeled build; build with "make" to label`)
-	}
-	return _BUILD_EMBED_LABEL
-}