set new default to the same as previous default

hopefully avoids unexpected behavior change for existing users, while
providing the ability to perform environment specific tuning as needed

CHANGELOG.adoc

@@ -23,11 +23,14 @@ toc::[]
     Default is 30s (same as previosly).
 *   Add CLI flag for configuring IdleTimeout, the maximum amount of time to wait
     for the next request when keep-alive is enabled (frontend). +
-    Default is 60 seconds.
-
-    Previously this value was not set, so it defaulted to the zero value, in
-    which case the ReadTimeout value (default 30s) was used internally by the go
-    http server.
+    Default is 30 seconds.
++
+[NOTE]
+--
+Previously this value was not set, so it defaulted to the zero value, in
+which case the ReadTimeout value (default 30s) was used internally by the go
+http server. The new default mirrors the old default.
+--
 
 == v2.5.1 2024-07-02
 *   Rebuild release with Go-1.22.5

README.adoc

@@ -147,7 +147,7 @@ Building requires:
 *   make
 *   posix compatible shell (sh)
 *   git
-*   go (latest version recommended. At least version >= 1.22)
+*   go (most recent version recommended)
 *   {link-asciidoctor} (for building man pages only)
 
 Building:

cmd/go-camo/main.go

@@ -80,7 +80,7 @@ type CLI struct { // betteralign:ignore
 	SSLCert             string        `name:"ssl-cert" placeholder:"PATH" help:"ssl cert (cert.pem) path"`
 	MaxSize             int64         `name:"max-size" placeholder:"INT" help:"Max allowed response size, in KB"`
 	ReqTimeout          time.Duration `name:"timeout" default:"4s" help:"Upstream request timeout (backend)"`
-	IdleTimeout         time.Duration `name:"idletimeout" default:"60s" help:"Maximum amount of time to wait for the next request when keep-alive is enabled (frontend)"`
+	IdleTimeout         time.Duration `name:"idletimeout" default:"30s" help:"Maximum amount of time to wait for the next request when keep-alive is enabled (frontend)"`
 	ReadTimeout         time.Duration `name:"readtimeout" default:"30s" help:"Maximum duration for reading the entire request, including the body (frontend)"`
 	MaxRedirects        int           `name:"max-redirects" default:"3" help:"Maximum number of redirects to follow"`
 	MaxSizeRedirect     string        `name:"max-size-redirect" placeholder:"URL" help:"redirect to URL when max-size is exceeded"`