fastcgi: Add timeouts support to Caddyfile adapter (#3842)

* fastcgi: Add timeouts support to Caddyfile adapter

* fastcgi: Use tabs instead of spaces

caddytest/integration/caddyfile_adapt/php_fastcgi_index_off.txt

@@ -1,15 +1,18 @@
 :8884
 
 php_fastcgi localhost:9000 {
-    # some php_fastcgi-specific subdirectives
+	# some php_fastcgi-specific subdirectives
-    split .php .php5
+	split .php .php5
-    env VAR1 value1
+	env VAR1 value1
-    env VAR2 value2
+	env VAR2 value2
-    root /var/www
+	root /var/www
-    index off
+	index off
+	dial_timeout 3s
+	read_timeout 10s
+	write_timeout 20s
 
-    # passed through to reverse_proxy (directive order doesn't matter!)
+	# passed through to reverse_proxy (directive order doesn't matter!)
-    lb_policy random
+	lb_policy random
 }
 ----------
 {
@@ -39,16 +42,19 @@ php_fastcgi localhost:9000 {
 										}
 									},
 									"transport": {
+										"dial_timeout": 3000000000,
 										"env": {
 											"VAR1": "value1",
 											"VAR2": "value2"
 										},
 										"protocol": "fastcgi",
+										"read_timeout": 10000000000,
 										"root": "/var/www",
 										"split_path": [
 											".php",
 											".php5"
-										]
+										],
+										"write_timeout": 20000000000
 									},
 									"upstreams": [
 										{

modules/caddyhttp/reverseproxy/fastcgi/caddyfile.go

@@ -40,6 +40,9 @@ func init() {
 //         split <at>
 //         env <key> <value>
 //         resolve_root_symlink
+//         dial_timeout <duration>
+//         read_timeout <duration>
+//         write_timeout <duration>
 //     }
 //
 func (t *Transport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
@@ -69,8 +72,41 @@ func (t *Transport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 				t.EnvVars[args[0]] = args[1]
 
 			case "resolve_root_symlink":
+				if d.NextArg() {
+					return d.ArgErr()
+				}
 				t.ResolveRootSymlink = true
 
+			case "dial_timeout":
+				if !d.NextArg() {
+					return d.ArgErr()
+				}
+				dur, err := caddy.ParseDuration(d.Val())
+				if err != nil {
+					return d.Errf("bad timeout value %s: %v", d.Val(), err)
+				}
+				t.DialTimeout = caddy.Duration(dur)
+
+			case "read_timeout":
+				if !d.NextArg() {
+					return d.ArgErr()
+				}
+				dur, err := caddy.ParseDuration(d.Val())
+				if err != nil {
+					return d.Errf("bad timeout value %s: %v", d.Val(), err)
+				}
+				t.ReadTimeout = caddy.Duration(dur)
+
+			case "write_timeout":
+				if !d.NextArg() {
+					return d.ArgErr()
+				}
+				dur, err := caddy.ParseDuration(d.Val())
+				if err != nil {
+					return d.Errf("bad timeout value %s: %v", d.Val(), err)
+				}
+				t.WriteTimeout = caddy.Duration(dur)
+
 			default:
 				return d.Errf("unrecognized subdirective %s", d.Val())
 			}
@@ -208,6 +244,42 @@ func parsePHPFastCGI(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error
 					dispenser.Delete()
 				}
 				fcgiTransport.ResolveRootSymlink = true
+
+			case "dial_timeout":
+				if !dispenser.NextArg() {
+					return nil, dispenser.ArgErr()
+				}
+				dur, err := caddy.ParseDuration(dispenser.Val())
+				if err != nil {
+					return nil, dispenser.Errf("bad timeout value %s: %v", dispenser.Val(), err)
+				}
+				fcgiTransport.DialTimeout = caddy.Duration(dur)
+				dispenser.Delete()
+				dispenser.Delete()
+
+			case "read_timeout":
+				if !dispenser.NextArg() {
+					return nil, dispenser.ArgErr()
+				}
+				dur, err := caddy.ParseDuration(dispenser.Val())
+				if err != nil {
+					return nil, dispenser.Errf("bad timeout value %s: %v", dispenser.Val(), err)
+				}
+				fcgiTransport.ReadTimeout = caddy.Duration(dur)
+				dispenser.Delete()
+				dispenser.Delete()
+
+			case "write_timeout":
+				if !dispenser.NextArg() {
+					return nil, dispenser.ArgErr()
+				}
+				dur, err := caddy.ParseDuration(dispenser.Val())
+				if err != nil {
+					return nil, dispenser.Errf("bad timeout value %s: %v", dispenser.Val(), err)
+				}
+				fcgiTransport.WriteTimeout = caddy.Duration(dur)
+				dispenser.Delete()
+				dispenser.Delete()
 			}
 		}
 	}