CA-403620: Drop the with_client_proxy

Signed-off-by: Ming Lu <[email protected]>

ocaml/libs/stunnel/stunnel.ml

@@ -448,45 +448,6 @@ let with_connect ?unique_id ?use_fork_exec_helper ?write_to_log ~verify_cert
     )
     5
 
-let with_client_proxy ~verify_cert ~remote_host ~remote_port ~local_host
-    ~local_port f =
-  ( try
-      D.debug "Clean up running stunnel client proxy if there is any ..." ;
-      let out, _ =
-        Forkhelpers.execute_command_get_output "/usr/sbin/fuser"
-          ["-4k"; string_of_int local_port ^ "/tcp"]
-      in
-      D.debug "Killed running stunnel client proxy:%s" out
-    with
-    | Forkhelpers.Spawn_internal_error (stderr, stdout, process_status) -> (
-      match process_status with
-      | Unix.WEXITED 1 ->
-          D.debug "No running stunnel client proxy"
-      | _ ->
-          D.warn
-            "Cleaning up running stunnel client proxy returned unexpectedly: \
-             stdout=(%s); stderr=(%s)"
-            stdout stderr
-    )
-  ) ;
-
-  retry
-    (fun () ->
-      let pid, _ =
-        attempt_one_connect
-          (`Local_host_port (local_host, local_port))
-          verify_cert remote_host remote_port
-      in
-      D.debug "Started a client proxy (pid:%s): %s:%s -> %s:%s"
-        (string_of_int (getpid pid))
-        local_host (string_of_int local_port) remote_host
-        (string_of_int remote_port) ;
-      Xapi_stdext_pervasives.Pervasiveext.finally
-        (fun () -> f ())
-        (fun () -> disconnect_with_pid ~wait:false ~force:true pid)
-    )
-    5
-
 let with_client_proxy_systemd_service ~verify_cert ~remote_host ~remote_port
     ~local_host ~local_port ~service f =
   let cmd_path = stunnel_path () in

ocaml/libs/stunnel/stunnel.mli

@@ -88,15 +88,6 @@ val with_moved_exn : t -> (t -> 'd) -> 'd
 
 val safe_release : t -> unit
 
-val with_client_proxy :
-     verify_cert:verification_config option
-  -> remote_host:string
-  -> remote_port:int
-  -> local_host:string
-  -> local_port:int
-  -> (unit -> 'a)
-  -> 'a
-
 val with_client_proxy_systemd_service :
      verify_cert:verification_config option
   -> remote_host:string