g3proxy: default to use yaml conf file extension

g3proxy/examples/chain_socks_proxy/g3proxy.yaml

@@ -0,0 +1,36 @@
+---
+runtime:
+  thread_number: 2
+
+server:
+  - name: socks10087
+    escaper: default
+    type: socks_proxy
+    listen:
+      address: "[::]:10087"
+    enable_udp_associate: true
+    udp_socket_buffer: 512K
+    conn_limit: 100M
+    relay_limit: 10M
+  - name: socks10086
+    escaper: socks
+    type: socks_proxy
+    listen: "[::]:10086"
+    enable_udp_associate: true
+
+resolver:
+  - name: default
+    type: c-ares
+    server: 223.5.5.5
+
+escaper:
+  - name: default
+    type: direct_fixed
+    no_ipv6: true
+    resolver: default
+    resolve_strategy: IPv4Only
+    tcp_conn_limit: 80M
+    udp_relay_limit: 10M
+  - name: socks
+    type: proxy_socks5
+    proxy_addr: "[::1]:10087"