docs: Add missing proxy and fastcgi options (#108)

* docs: Add missing proxy and fastcgi options

* Update src/docs/markdown/caddyfile/directives/reverse_proxy.md

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>

* Update src/docs/markdown/caddyfile/directives/reverse_proxy.md

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>

* Update src/docs/markdown/caddyfile/directives/reverse_proxy.md

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>

src/docs/markdown/caddyfile/directives/php_fastcgi.md

@@ -18,20 +18,29 @@ It supports all the subdirectives of [reverse_proxy](/docs/caddyfile/directives/
 
 ```caddy-d
 php_fastcgi [<matcher>] <php-fpm_gateways...> {
+	root <path>
 	split <substrings...>
 	env [<key> <value>]
-	root <path>
 	index <filename>
+	resolve_root_symlink
+	dial_timeout  <duration>
+	read_timeout  <duration>
+	write_timeout <duration>
 
 	<any other reverse_proxy subdirectives...>
 }
 ```
 
 - **<php-fpm_gateways...>** are the [addresses](/docs/conventions#network-addresses) of the FastCGI servers.
-- **split** sets the substrings for splitting the URI into two parts. The first matching substring will be used to split the "path info" from the path. The first piece is suffixed with the matching substring and will be assumed as the actual resource (CGI script) name. The second piece will be set to PATH_INFO for the CGI script to use. Default: `.php`
-- **env** sets an extra environment variable to the given value.
 - **root** sets the root folder to the site. Default: [`root` directive](/docs/caddyfile/directives/root).
+- **split** sets the substrings for splitting the URI into two parts. The first matching substring will be used to split the "path info" from the path. The first piece is suffixed with the matching substring and will be assumed as the actual resource (CGI script) name. The second piece will be set to PATH_INFO for the CGI script to use. Default: `.php`
+- **env** sets an extra environment variable to the given value. Can be specified more than once for multiple environment variables.
 - **index** specifies the filename to treat as the directory index file. This affects the file matcher in the [expanded form](#expanded-form). Default: `index.php`
+- **resolve_root_symlink** enables resolving the `root` directory to its actual value by evaluating a symbolic link, if one exists.
+- **dial_timeout** is how long to wait when connecting to the upstream socket. Accepts [duration values](/docs/conventions#durations). Default: no timeout.
+- **read_timeout** is how long to wait when reading from the FastCGI server. Accepts [duration values](/docs/conventions#durations). Default: no timeout.
+- **write_timeout** is how long to wait when sending to the FastCGI server. Accepts [duration values](/docs/conventions#durations). Default: no timeout.
+
 
 Since this directive is an opinionated wrapper over a reverse proxy, you can use any of reverse_proxy's subdirectives to customize it.
 

src/docs/markdown/caddyfile/directives/reverse_proxy.md

@@ -135,13 +135,18 @@ Caddy's proxy **transport** is pluggable:
 
 - **transport** defines how to communicate with the backend. Default is `http`.
 
+
 #### The `http` transport
 
 ```caddy-d
 transport http {
-	read_buffer  <size>
+	read_buffer             <size>
-	write_buffer <size>
+	write_buffer            <size>
-	dial_timeout <duration>
+	max_response_header     <size>
+	dial_timeout            <duration>
+	dial_fallback_delay     <duration>
+	response_header_timeout <duration>
+	expect_continue_timeout <duration>
 	tls
 	tls_client_auth <automate_name> | <cert_file> <key_file>
 	tls_insecure_skip_verify
@@ -159,7 +164,11 @@ transport http {
 
 - **read_buffer** is the size of the read buffer in bytes.
 - **write_buffer** is the size of the write buffer in bytes.
-- **dial_timeout** is how long to wait when connecting to the upstream socket.
+- **max_response_header** is the maximum amount of bytes to read from response headers.
+- **dial_timeout** is how long to wait when connecting to the upstream socket. Accepts [duration values](/docs/conventions#durations).
+- **dial_fallback_delay** is how long to wait before spawning an RFC 6555 Fast Fallback connection. A negative value disables this. Accepts [duration values](/docs/conventions#durations).
+- **response_header_timeout** is how long to wait for reading response headers from the upstream. Accepts [duration values](/docs/conventions#durations).
+- **expect_continue_timeout** is how long to wait for the upstreams's first response headers after fully writing the request headers if the request has the header `Expect: 100-continue`. Accepts [duration values](/docs/conventions#durations).
 - **tls** uses HTTPS with the backend. This will be enabled automatically if you specify backends using the `https://` scheme or port `:443`.
 - **tls_client_auth** enables TLS client authentication one of two ways: (1) by specifying a domain name for which Caddy should obtain a certificate and keep it renewed, or (2) by specifying a certificate and key file to present for TLS client authentication with the backend.
 - **tls_insecure_skip_verify** turns off security. _Do not use in production._
@@ -173,6 +182,8 @@ transport http {
 - **max_conns_per_host** optionally limits the total number of connections per host, including connections in the dialing, active, and idle states. Has no limit by default.
 - **max_idle_conns_per_host** if non-zero, controls the maximum idle (keepalive) connections to keep per-host. Default: `2`
 
+
+
 #### The `fastcgi` transport
 
 ```caddy-d
@@ -180,14 +191,20 @@ transport fastcgi {
 	root  <path>
 	split <at>
 	env   <key> <value>
-    resolve_root_symlink
+	resolve_root_symlink
+	dial_timeout  <duration>
+	read_timeout  <duration>
+	write_timeout <duration>
 }
 ```
 
 - **root** is the root of the site. Default: `{http.vars.root}` or current working directory.
 - **split** is where to split the path to get PATH_INFO at the end of the URI.
-- **env** sets custom environment variables.
+- **env** sets an extra environment variable to the given value. Can be specified more than once for multiple environment variables.
-- **resolve_root_symlink** The declared root directory will be resolved to its actual value by evaluating any symbolic links.
+- **resolve_root_symlink** enables resolving the `root` directory to its actual value by evaluating a symbolic link, if one exists.
+- **dial_timeout** is how long to wait when connecting to the upstream socket. Accepts [duration values](/docs/conventions#durations). Default: no timeout.
+- **read_timeout** is how long to wait when reading from the FastCGI server. Accepts [duration values](/docs/conventions#durations). Default: no timeout.
+- **write_timeout** is how long to wait when sending to the FastCGI server. Accepts [duration values](/docs/conventions#durations). Default: no timeout.
 
 
 ## Examples