ssh/tailssh, ipnlocal, controlclient: fetch next SSHAction from network

Updates #3802

Change-Id: I08e98805ab86d6bbabb6c365ed4526f54742fd8e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

control/controlclient/auto.go

@@ -7,6 +7,7 @@ package controlclient
 import (
 	"context"
 	"fmt"
+	"net/http"
 	"sync"
 	"time"
 
@@ -725,3 +726,7 @@ func (c *Auto) TestOnlyTimeNow() time.Time {
 func (c *Auto) SetDNS(ctx context.Context, req *tailcfg.SetDNSRequest) error {
 	return c.direct.SetDNS(ctx, req)
 }
+
+func (c *Auto) DoNoiseRequest(req *http.Request) (*http.Response, error) {
+	return c.direct.DoNoiseRequest(req)
+}

control/controlclient/client.go

@@ -11,6 +11,7 @@ package controlclient
 
 import (
 	"context"
+	"net/http"
 	"time"
 
 	"tailscale.com/tailcfg"
@@ -82,6 +83,9 @@ type Client interface {
 	// SetDNS sends the SetDNSRequest request to the control plane server,
 	// requesting a DNS record be created or updated.
 	SetDNS(context.Context, *tailcfg.SetDNSRequest) error
+	// DoNoiseRequest sends an HTTP request to the control plane
+	// over the Noise transport.
+	DoNoiseRequest(*http.Request) (*http.Response, error)
 }
 
 // UserVisibleError is an error that should be shown to users.

control/controlclient/direct.go

@@ -1428,6 +1428,14 @@ func (c *Direct) SetDNS(ctx context.Context, req *tailcfg.SetDNSRequest) (err er
 	return nil
 }
 
+func (c *Direct) DoNoiseRequest(req *http.Request) (*http.Response, error) {
+	nc, err := c.getNoiseClient()
+	if err != nil {
+		return nil, err
+	}
+	return nc.Do(req)
+}
+
 // tsmpPing sends a Ping to pr.IP, and sends an http request back to pr.URL
 // with ping response data.
 func tsmpPing(logf logger.Logf, c *http.Client, pr *tailcfg.PingRequest, pinger Pinger) error {