refactor: aware of lowercase https_proxy/all_proxy (#484)

config.example.yaml

@@ -38,8 +38,8 @@ clients:
   #       extra_fields:                               # Set custom parameters, will merge with the body json
   #          key: value                               
   #   extra:
-  #     proxy: socks5://127.0.0.1:1080                # Specify https/socks5 proxy server. ENV: HTTPS_PROXY/ALL_PROXY
-  #     connect_timeout: 10                           # Set a timeout in seconds for connect to server
+  #     proxy: socks5://127.0.0.1:1080                # Set https/socks5 proxy. ENV: HTTPS_PROXY/https_proxy/ALL_PROXY/all_proxy
+  #     connect_timeout: 10                           # Set timeout in seconds for connect to api
 
   # See https://platform.openai.com/docs/quickstart
   - type: openai

src/client/common.rs

@@ -693,11 +693,14 @@ fn to_json(kind: &PromptKind, value: &str) -> Value {
 
 fn set_proxy(builder: ClientBuilder, proxy: &Option<String>) -> Result<ClientBuilder> {
     let proxy = if let Some(proxy) = proxy {
-        if proxy.is_empty() || proxy == "false" || proxy == "-" {
+        if proxy.is_empty() || proxy == "-" {
             return Ok(builder);
         }
         proxy.clone()
-    } else if let Ok(proxy) = env::var("HTTPS_PROXY").or_else(|_| env::var("ALL_PROXY")) {
+    } else if let Some(proxy) = ["HTTPS_PROXY", "https_proxy", "ALL_PROXY", "all_proxy"]
+        .into_iter()
+        .find_map(|v| env::var(v).ok())
+    {
         proxy
     } else {
         return Ok(builder);