update readme

Author: ssrlive

README.md

@@ -33,9 +33,8 @@ Usage: dns2socks [OPTIONS]
 Options:
   -l, --listen-addr <IP:port>        Listen address [default: 0.0.0.0:53]
   -d, --dns-remote-server <IP:port>  Remote DNS server address [default: 8.8.8.8:53]
-  -s, --socks5-server <IP:port>      SOCKS5 proxy server address [default: 127.0.0.1:1080]
-  -u, --username <user name>         User name for SOCKS5 authentication
-  -p, --password <password>          Password for SOCKS5 authentication
+  -s, --socks5-settings <URL>        SOCKS5 URL in the form socks5://[username[:password]@]host:port, Username and password are encoded in percent
+                                     encoding. For example: socks5://myname:pass%[email protected]:1080 [default: socks5://127.0.0.1:1080]
   -f, --force-tcp                    Force to use TCP to proxy DNS query
   -c, --cache-records                Cache DNS query records
   -v, --verbosity <level>            Verbosity level [default: info] [possible values: off, error, warn, info, debug, trace]

src/config.rs

@@ -16,7 +16,7 @@ pub struct Config {
     /// SOCKS5 URL in the form socks5://[username[:password]@]host:port,
     /// Username and password are encoded in percent encoding. For example:
     /// socks5://myname:pass%[email protected]:1080
-    #[arg(short, long, value_parser = |s: &str| ArgProxy::try_from(s), value_name = "URL")]
+    #[arg(short, long, value_parser = |s: &str| ArgProxy::try_from(s), value_name = "URL", default_value = "socks5://127.0.0.1:1080")]
     pub socks5_settings: ArgProxy,
 
     /// Force to use TCP to proxy DNS query