constants.py

"""跨模块共享常量 — 协议级头部过滤规则与 Copilot 元数据."""

# ── 代理转发头过滤规则 ─────────────────────────────────────

# 代理转发时应跳过的 hop-by-hop 请求头
PROXY_SKIP_HEADERS: frozenset[str] = frozenset(
    {
        "host",
        "content-length",
        "transfer-encoding",
        "connection",
    }
)

# 构造合成 Response 时需移除的头部（避免 httpx 二次解压已解压内容）
RESPONSE_SANITIZE_SKIP_HEADERS: frozenset[str] = frozenset(
    {
        "content-encoding",
        "content-length",
        "transfer-encoding",
    }
)

# ── Copilot URL / 版本常量 ─────────────────────────────────

_COPILOT_VERSION = "0.26.7"
_EDITOR_VERSION = "vscode/1.98.0"
_EDITOR_PLUGIN_VERSION = f"copilot-chat/{_COPILOT_VERSION}"
_USER_AGENT = f"GitHubCopilotChat/{_COPILOT_VERSION}"
_GITHUB_API_VERSION = "2025-04-01"