fix the sock issue

scripts/demo_chat.py

@@ -7,6 +7,88 @@ from lang_agent.pipeline import Pipeline, PipelineConfig
 from lang_agent.config import load_tyro_conf
 from lang_agent.components.conv_store import use_printer
 
+import os
+import re
+from typing import Dict, List, Tuple
+
+def fix_proxy_env_vars(
+    dry_run: bool = False,
+    verbose: bool = True
+) -> Tuple[Dict[str, Tuple[str, str]], Dict[str, str]]:
+    """
+    Auto-fix proxy environment variables in-place.
+    
+    Fixes invalid schemes:
+      - socks://   → socks5://
+      - socks5://  → socks5:// (unchanged)
+      - socks4://  → socks4:// (unchanged)
+      - http://    → http://   (unchanged)
+      - https://   → https://  (unchanged)
+    
+    Args:
+        dry_run: If True, only report changes without modifying env vars.
+        verbose: If True, print changes to stdout.
+    
+    Returns:
+        Tuple of:
+          - Dict of {var_name: (old_value, new_value)} for changed vars
+          - Dict of current proxy env vars after fix
+    """
+    proxy_vars = [
+        "HTTP_PROXY", "http_proxy",
+        "HTTPS_PROXY", "https_proxy",
+        "ALL_PROXY", "all_proxy"
+    ]
+    
+    scheme_fixes = [
+        (re.compile(r'^socks5?://', re.IGNORECASE), 'socks5://'),  # socks:// or socks5:// → socks5://
+        (re.compile(r'^socks4a?://', re.IGNORECASE), 'socks4://'), # socks4:// or socks4a:// → socks4://
+    ]
+    
+    changed = {}
+    current_proxies = {}
+    
+    for var in proxy_vars:
+        value = os.environ.get(var)
+        if not value:
+            continue
+        
+        current_proxies[var] = value
+        new_value = value
+        
+        # Apply scheme fixes
+        for pattern, replacement in scheme_fixes:
+            if pattern.match(value):
+                new_value = replacement + value[pattern.match(value).end():]
+                break
+        
+        # Only update if value actually changed
+        if new_value != value:
+            changed[var] = (value, new_value)
+            if not dry_run:
+                os.environ[var] = new_value
+                current_proxies[var] = new_value
+    
+    # Report changes
+    if verbose:
+        if changed:
+            action = "Would fix" if dry_run else "Fixed"
+            print(f"✅ {action} proxy environment variables:")
+            for var, (old, new) in changed.items():
+                print(f"   {var}: {old} → {new}")
+        else:
+            print("✅ No proxy environment variables need fixing.")
+        
+        if current_proxies and not dry_run:
+            print("\n🔧 Current proxy settings:")
+            for var in sorted(set(k.upper() for k in current_proxies)):
+                val = os.environ.get(var, os.environ.get(var.lower(), ""))
+                if val:
+                    print(f"   {var}: {val}")
+    
+    return changed, current_proxies
+
+
 
 def main(
     conf: PipelineConfig,
@@ -18,6 +100,7 @@ def main(
         conf: Pipeline configuration
         stream: Enable streaming mode for chat responses
     """
+    fix_proxy_env_vars()
     use_printer()
     if conf.config_f is not None:
         conf = load_tyro_conf(conf.config_f)