perf(transport): 全链路传输压缩优化

- 上游请求启用 HTTP/2 (HPACK 头部压缩 + 多路复用)，添加 h2 依赖
- 上游请求体超过阈值时自动 gzip 压缩，使用紧凑 JSON 序列化
- 添加 brotli 依赖，Accept-Encoding 支持 gzip/deflate/br
- 隧道帧压缩: Rust 端响应帧和 Python 端请求/响应帧均支持 gzip
- Rust 端压缩/解压逻辑统一提取到 protocol.rs
- Rust 端请求头构建改用 .headers() 替换 reqwest 默认值
- 新增 ENABLE_HTTP2、ENABLE_REQUEST_COMPRESSION 等环境变量配置

aether-proxy/src/tunnel/dispatcher.rs

@@ -14,7 +14,7 @@ use tracing::{debug, error, info, warn};
 use crate::state::{AppState, ServerContext};
 
 use super::heartbeat::HeartbeatHandle;
-use super::protocol::{Frame, MsgType, RequestMeta};
+use super::protocol::{decompress_if_gzip, Frame, MsgType, RequestMeta};
 use super::stream_handler;
 use super::writer::FrameSender;
 
@@ -92,8 +92,15 @@ where
 
         match frame.msg_type {
             MsgType::RequestHeaders => {
-                // Parse request metadata
+                // Decompress if the frame is gzip-compressed, then parse metadata
-                let meta: RequestMeta = match serde_json::from_slice(&frame.payload) {
+                let payload = match decompress_if_gzip(&frame) {
+                    Ok(p) => p,
+                    Err(e) => {
+                        warn!(stream_id = frame.stream_id, error = %e, "frame decompress failed");
+                        continue;
+                    }
+                };
+                let meta: RequestMeta = match serde_json::from_slice(&payload) {
                     Ok(m) => m,
                     Err(e) => {
                         warn!(stream_id = frame.stream_id, error = %e, "invalid request metadata");

aether-proxy/src/tunnel/protocol.rs

@@ -159,3 +159,53 @@ pub struct ResponseMeta {
     /// Header list preserving duplicates (e.g. multiple Set-Cookie).
     pub headers: Vec<(String, String)>,
 }
+
+// ---------------------------------------------------------------------------
+// Tunnel frame compression helpers
+// ---------------------------------------------------------------------------
+
+/// Minimum payload size to attempt gzip compression (bytes).
+const COMPRESS_MIN_SIZE: usize = 512;
+
+/// If the frame has the GZIP_COMPRESSED flag, decompress the payload; otherwise
+/// return a clone of the raw payload bytes.
+pub fn decompress_if_gzip(frame: &Frame) -> Result<Bytes, std::io::Error> {
+    if frame.is_gzip() {
+        decompress_gzip(&frame.payload)
+    } else {
+        Ok(frame.payload.clone())
+    }
+}
+
+/// Gzip-compress `data` if it is large enough and compression actually shrinks
+/// the payload. Returns `(payload, extra_flags)` where `extra_flags` contains
+/// `GZIP_COMPRESSED` when compression was applied.
+pub fn compress_payload(data: Bytes) -> (Bytes, u8) {
+    if data.len() >= COMPRESS_MIN_SIZE {
+        if let Ok(compressed) = compress_gzip(&data) {
+            if compressed.len() < data.len() {
+                return (compressed, flags::GZIP_COMPRESSED);
+            }
+        }
+    }
+    (data, 0)
+}
+
+fn decompress_gzip(data: &[u8]) -> Result<Bytes, std::io::Error> {
+    use flate2::read::GzDecoder;
+    use std::io::Read;
+    let mut decoder = GzDecoder::new(data);
+    let mut buf = Vec::new();
+    decoder.read_to_end(&mut buf)?;
+    Ok(Bytes::from(buf))
+}
+
+fn compress_gzip(data: &[u8]) -> Result<Bytes, std::io::Error> {
+    use flate2::write::GzEncoder;
+    use flate2::Compression;
+    use std::io::Write;
+    let mut encoder = GzEncoder::new(Vec::new(), Compression::fast());
+    encoder.write_all(data)?;
+    let compressed = encoder.finish()?;
+    Ok(Bytes::from(compressed))
+}

aether-proxy/src/tunnel/stream_handler.rs

@@ -15,7 +15,9 @@ use tracing::{debug, warn};
 use crate::state::{AppState, ServerContext};
 use crate::target_filter;
 
-use super::protocol::{flags, Frame, MsgType, RequestMeta, ResponseMeta};
+use super::protocol::{
+    compress_payload, decompress_if_gzip, flags, Frame, MsgType, RequestMeta, ResponseMeta,
+};
 use super::writer::FrameSender;
 
 /// Maximum response body chunk size per frame (32 KB).
@@ -95,21 +97,17 @@ async fn handle_stream_inner(
         match body_rx.recv().await {
             Some(frame) => {
                 if frame.msg_type == MsgType::RequestBody {
-                    let payload = if frame.is_gzip() {
+                    let payload = match decompress_if_gzip(&frame) {
-                        match decompress_gzip(&frame.payload) {
+                        Ok(d) => d,
-                            Ok(d) => d,
+                        Err(e) => {
-                            Err(e) => {
+                            send_error(
-                                send_error(
+                                frame_tx,
-                                    frame_tx,
+                                stream_id,
-                                    stream_id,
+                                &format!("gzip decompress failed: {e}"),
-                                    &format!("gzip decompress failed: {e}"),
+                            )
-                                )
+                            .await;
-                                .await;
+                            return;
-                                return;
-                            }
                         }
-                    } else {
-                        frame.payload.clone()
                     };
                     if !payload.is_empty() {
                         body_parts.push(payload);
@@ -194,21 +192,23 @@ async fn handle_stream_inner(
     let timeout = Duration::from_secs(meta.timeout.clamp(MIN_TIMEOUT_SECS, MAX_TIMEOUT_SECS));
 
     let method: reqwest::Method = meta.method.parse().unwrap_or(reqwest::Method::GET);
-    let mut req = client.request(method, &meta.url);
+    // Build a complete HeaderMap from tunnel headers, then set it all at once
+    // via .headers() which *replaces* reqwest defaults (e.g. Accept: */*),
+    // ensuring upstream sees exactly what Aether server intended.
+    let mut header_map = reqwest::header::HeaderMap::with_capacity(meta.headers.len());
     for (k, v) in &meta.headers {
         let k_lower = k.to_ascii_lowercase();
-        // Skip hop-by-hop and security-sensitive headers
         if BLOCKED_HEADERS.contains(&k_lower.as_str()) {
             continue;
         }
-        // Validate header name/value are valid HTTP
         if let (Ok(name), Ok(value)) = (
             reqwest::header::HeaderName::from_bytes(k.as_bytes()),
             reqwest::header::HeaderValue::from_str(v),
         ) {
-            req = req.header(name, value);
+            header_map.insert(name, value);
         }
     }
+    let mut req = client.request(method, &meta.url).headers(header_map);
     let body_size = body.len();
     if !body.is_empty() {
         req = req.body(body);
@@ -258,39 +258,51 @@ async fn handle_stream_inner(
         status,
         headers: resp_headers,
     };
-    let meta_json = serde_json::to_vec(&resp_meta).unwrap_or_default();
+    let meta_json: Bytes = serde_json::to_vec(&resp_meta).unwrap_or_default().into();
+    let (meta_payload, meta_flags) = compress_payload(meta_json);
     if !send_frame(
         frame_tx,
-        Frame::new(stream_id, MsgType::ResponseHeaders, 0, meta_json),
+        Frame::new(
+            stream_id,
+            MsgType::ResponseHeaders,
+            meta_flags,
+            meta_payload,
+        ),
     )
     .await
     {
         return;
     }
 
-    // Stream response body
+    // Stream response body — relay upstream bytes through the tunnel.
+    // Apply tunnel-level frame compression for chunks that benefit from it
+    // (e.g. uncompressed SSE text). Already-compressed data (gzip/br from
+    // upstream Content-Encoding) won't shrink further and will be sent as-is
+    // thanks to the size check in compress_payload().
     let mut stream = response.bytes_stream();
     while let Some(chunk_result) = stream.next().await {
         match chunk_result {
             Ok(chunk) => {
                 if chunk.len() <= MAX_CHUNK_SIZE {
+                    let (payload, extra_flags) = compress_payload(chunk);
                     if !send_frame(
                         frame_tx,
-                        Frame::new(stream_id, MsgType::ResponseBody, 0, chunk),
+                        Frame::new(stream_id, MsgType::ResponseBody, extra_flags, payload),
                     )
                     .await
                     {
                         return;
                     }
                 } else {
-                    // Split oversized chunks
+                    // Split oversized chunks, compress each slice
                     let mut offset = 0;
                     while offset < chunk.len() {
                         let end = (offset + MAX_CHUNK_SIZE).min(chunk.len());
                         let slice = chunk.slice(offset..end);
+                        let (payload, extra_flags) = compress_payload(slice);
                         if !send_frame(
                             frame_tx,
-                            Frame::new(stream_id, MsgType::ResponseBody, 0, slice),
+                            Frame::new(stream_id, MsgType::ResponseBody, extra_flags, payload),
                         )
                         .await
                         {
@@ -337,12 +349,3 @@ async fn send_error(tx: &FrameSender, stream_id: u32, msg: &str) {
     )
     .await;
 }
-
-fn decompress_gzip(data: &[u8]) -> Result<Bytes, std::io::Error> {
-    use flate2::read::GzDecoder;
-    use std::io::Read;
-    let mut decoder = GzDecoder::new(data);
-    let mut buf = Vec::new();
-    decoder.read_to_end(&mut buf)?;
-    Ok(Bytes::from(buf))
-}

pyproject.toml

@@ -27,7 +27,8 @@ dependencies = [
     "pydantic>=2.12.5",
     "python-dotenv>=1.2.1",
     "openai>=2.16.0",
-    "httpx[socks]>=0.28.1",
+    "httpx[socks,http2]>=0.28.1",
+    "brotli>=1.1.0",
     "sqlalchemy>=2.0.46",
     "alembic>=1.18.3",
     "bcrypt>=5.0.0",

src/clients/http_client.py

@@ -73,7 +73,7 @@ class HTTPClientPool:
             # 双重检查，避免重复创建
             if cls._default_client is None:
                 cls._default_client = httpx.AsyncClient(
-                    http2=False,  # 暂时禁用HTTP/2以提高兼容性
+                    http2=config.enable_http2,
                     verify=get_ssl_context(),  # 使用 certifi 证书
                     timeout=httpx.Timeout(
                         connect=config.http_connect_timeout,
@@ -106,7 +106,7 @@ class HTTPClientPool:
         """
         if cls._default_client is None:
             cls._default_client = httpx.AsyncClient(
-                http2=False,  # 暂时禁用HTTP/2以提高兼容性
+                http2=config.enable_http2,
                 verify=get_ssl_context(),  # 使用 certifi 证书
                 timeout=httpx.Timeout(
                     connect=config.http_connect_timeout,
@@ -143,7 +143,7 @@ class HTTPClientPool:
         if name not in cls._clients:
             # 合并默认配置和自定义配置
             default_config = {
-                "http2": False,
+                "http2": config.enable_http2,
                 "verify": get_ssl_context(),
                 "timeout": httpx.Timeout(
                     connect=config.http_connect_timeout,
@@ -282,7 +282,7 @@ class HTTPClientPool:
 
             # 创建新客户端（使用默认超时，请求时可覆盖）
             client_config: dict[str, Any] = {
-                "http2": False,
+                "http2": config.enable_http2,
                 "verify": get_ssl_context_for_profile(tls_profile),
                 "follow_redirects": True,
                 "limits": httpx.Limits(
@@ -377,7 +377,7 @@ class HTTPClientPool:
                 response = await client.get('https://example.com')
         """
         default_config = {
-            "http2": False,
+            "http2": config.enable_http2,
             "verify": get_ssl_context(),
             "timeout": httpx.Timeout(
                 connect=config.http_connect_timeout,
@@ -416,7 +416,7 @@ class HTTPClientPool:
             配置好的 httpx.AsyncClient 实例（调用者需要负责关闭）
         """
         client_config: dict[str, Any] = {
-            "http2": False,
+            "http2": config.enable_http2,
             "verify": get_ssl_context_for_profile(tls_profile),
             "follow_redirects": True,
         }

src/config/settings.py

@@ -177,6 +177,22 @@ class Config:
         )
         self.http_keepalive_expiry = float(os.getenv("HTTP_KEEPALIVE_EXPIRY", "30.0"))
 
+        # 上游传输优化配置
+        # ENABLE_HTTP2: 是否对上游请求启用 HTTP/2（HPACK 头部压缩 + 多路复用）
+        #   - 三家上游（Claude/OpenAI/Gemini）均已确认支持 HTTP/2
+        #   - 出现兼容性问题时可通过环境变量快速回退到 HTTP/1.1
+        self.enable_http2 = os.getenv("ENABLE_HTTP2", "true").lower() == "true"
+        # ENABLE_REQUEST_COMPRESSION: 是否对上游请求体启用 gzip 压缩
+        #   - 仅对超过 REQUEST_COMPRESSION_MIN_SIZE 的请求体生效
+        #   - 上游 Cloudflare/Google Front End 层会透明解压
+        self.enable_request_compression = (
+            os.getenv("ENABLE_REQUEST_COMPRESSION", "true").lower() == "true"
+        )
+        # REQUEST_COMPRESSION_MIN_SIZE: 触发请求体压缩的最小字节数
+        #   - gzip 有固定头部开销，小请求压缩后可能反而变大
+        #   - 默认 1024 字节（1KB）
+        self.request_compression_min_size = int(os.getenv("REQUEST_COMPRESSION_MIN_SIZE", "1024"))
+
         # 流式处理配置
         # STREAM_PREFETCH_LINES: 预读行数，用于检测嵌套错误
         # STREAM_STATS_DELAY: 统计记录延迟（秒），等待流完全关闭

src/core/api_format/headers.py

@@ -39,6 +39,7 @@ BROWSER_FINGERPRINT_HEADERS: dict[str, str] = {
         "Chrome/140.0.7339.249 Electron/38.7.0 Safari/537.36"
     ),
     "Accept": "application/json",
+    "Accept-Encoding": "gzip, deflate, br",
     "Accept-Language": "zh-CN",
     "sec-ch-ua": '"Not=A?Brand";v="24", "Chromium";v="140"',
     "sec-ch-ua-mobile": "?0",
@@ -73,7 +74,7 @@ UPSTREAM_DROP_HEADERS: frozenset[str] = frozenset(
         "content-length",
         "transfer-encoding",
         "connection",
-        # 编码头 - 避免客户端请求 brotli/zstd 但 httpx 不支持
+        # 编码头 - 丢弃客户端值，由 BROWSER_FINGERPRINT_HEADERS 统一设置
         "accept-encoding",
         # 反向代理 / 网关注入的头部 - 属于本站基础设施，不应泄露给上游
         "x-real-ip",

src/services/proxy_node/resolver.py

@@ -7,13 +7,16 @@
 
 from __future__ import annotations
 
+import gzip
 import hashlib
+import json
 import time
 from typing import Any
 from urllib.parse import quote, urlparse
 
 import httpx
 
+from src.config import config
 from src.core.exceptions import ProxyNodeUnavailableError
 from src.core.logger import logger
 
@@ -614,6 +617,30 @@ def resolve_delegate_config(proxy_config: dict[str, Any] | None) -> dict[str, An
 # ---------------------------------------------------------------------------
 
 
+def _maybe_compress_payload(
+    payload: Any,
+    headers: dict[str, str],
+) -> tuple[bytes, dict[str, str]]:
+    """
+    将 payload 序列化为 JSON bytes，按配置决定是否 gzip 压缩。
+
+    NOTE: 使用紧凑分隔符 ``(",", ":")`` 序列化（无空格），相比 httpx ``json=``
+    参数的默认 ``json.dumps``（带空格分隔符）体积更小，所有上游 API 均兼容。
+
+    Returns:
+        (body_bytes, updated_headers)
+    """
+    json_bytes = json.dumps(payload, ensure_ascii=False, separators=(",", ":")).encode("utf-8")
+
+    if config.enable_request_compression and len(json_bytes) >= config.request_compression_min_size:
+        compressed = gzip.compress(json_bytes, compresslevel=6)
+        if len(compressed) < len(json_bytes):
+            headers = {**headers, "Content-Encoding": "gzip"}
+            return compressed, headers
+
+    return json_bytes, headers
+
+
 def build_post_kwargs(
     _delegate_cfg: dict[str, Any] | None = None,
     *,
@@ -631,10 +658,11 @@ def build_post_kwargs(
     ``_delegate_cfg`` 和 ``refresh_auth`` 已废弃（tunnel 模式下认证由 transport 层处理），
     保留仅为兼容现有调用方签名。
     """
+    content, final_headers = _maybe_compress_payload(payload, headers)
     return {
         "url": url,
-        "json": payload,
+        "content": content,
-        "headers": headers,
+        "headers": final_headers,
         "timeout": httpx.Timeout(timeout),
     }
 
@@ -655,11 +683,12 @@ def build_stream_kwargs(
 
     ``_delegate_cfg`` 已废弃，保留仅为兼容现有调用方签名。
     """
+    content, final_headers = _maybe_compress_payload(payload, headers)
     kwargs: dict[str, Any] = {
         "method": "POST",
         "url": url,
-        "json": payload,
+        "content": content,
-        "headers": headers,
+        "headers": final_headers,
     }
     if timeout is not None:
         kwargs["timeout"] = httpx.Timeout(timeout)

src/services/proxy_node/tunnel_manager.py

@@ -8,6 +8,7 @@ WebSocket 隧道管理器
 from __future__ import annotations
 
 import asyncio
+import gzip
 import json
 import time
 from typing import TYPE_CHECKING, Any
@@ -21,6 +22,10 @@ from src.core.logger import logger
 
 from .tunnel_protocol import Frame, FrameFlags, MsgType
 
+# 隧道帧压缩的最小 payload 大小（字节）
+# 小于此值的帧压缩收益不大，反而增加 CPU 开销
+_TUNNEL_COMPRESS_MIN_SIZE = 512
+
 
 class TunnelConnection:
     """单条 tunnel 连接"""
@@ -309,7 +314,7 @@ class TunnelManager:
         stream_state = conn.create_stream(stream_id)
 
         try:
-            # 发送 REQUEST_HEADERS
+            # 发送 REQUEST_HEADERS（大元数据帧压缩）
             meta = json.dumps(
                 {
                     "method": method,
@@ -318,13 +323,19 @@ class TunnelManager:
                     "timeout": int(timeout),
                 }
             ).encode()
-            await conn.send_frame(Frame(stream_id, MsgType.REQUEST_HEADERS, 0, meta))
+            meta_payload, meta_flags = _compress_frame_payload(meta)
-
-            # 发送 REQUEST_BODY + END_STREAM
-            body_data = body or b""
             await conn.send_frame(
-                Frame(stream_id, MsgType.REQUEST_BODY, FrameFlags.END_STREAM, body_data)
+                Frame(stream_id, MsgType.REQUEST_HEADERS, meta_flags, meta_payload)
             )
+
+            # 发送 REQUEST_BODY + END_STREAM（大请求体帧压缩）
+            body_data = body or b""
+            if body_data:
+                body_payload, body_flags = _compress_frame_payload(body_data)
+            else:
+                body_payload, body_flags = body_data, 0
+            body_flags |= FrameFlags.END_STREAM
+            await conn.send_frame(Frame(stream_id, MsgType.REQUEST_BODY, body_flags, body_payload))
         except Exception:
             conn.remove_stream(stream_id)
             raise
@@ -348,14 +359,16 @@ class TunnelManager:
             if not stream:
                 return
             try:
-                meta = json.loads(frame.payload)
+                payload = _decompress_frame_payload(frame)
+                meta = json.loads(payload)
                 stream.set_response_headers(meta["status"], meta.get("headers", []))
             except Exception as e:
                 stream.set_error(f"invalid response headers: {e}")
 
         elif frame.msg_type == MsgType.RESPONSE_BODY:
             if stream:
-                stream.push_body_chunk(frame.payload)
+                payload = _decompress_frame_payload(frame)
+                stream.push_body_chunk(payload)
 
         elif frame.msg_type == MsgType.STREAM_END:
             if stream:
@@ -426,6 +439,32 @@ class TunnelManager:
             logger.debug("heartbeat ACK send failed for node_id={}", conn.node_id)
 
 
+# ---------------------------------------------------------------------------
+# 隧道帧压缩 / 解压
+# ---------------------------------------------------------------------------
+
+
+def _compress_frame_payload(data: bytes) -> tuple[bytes, int]:
+    """按配置对帧 payload 进行 gzip 压缩。
+
+    Returns:
+        (payload, flags) — 若压缩则 flags 含 GZIP_COMPRESSED，否则 flags=0。
+    """
+    if len(data) >= _TUNNEL_COMPRESS_MIN_SIZE:
+        compressed = gzip.compress(data, compresslevel=6)
+        # 仅在压缩确实缩小时使用
+        if len(compressed) < len(data):
+            return compressed, FrameFlags.GZIP_COMPRESSED
+    return data, 0
+
+
+def _decompress_frame_payload(frame: Frame) -> bytes:
+    """如果帧设置了 GZIP_COMPRESSED 标志则解压，否则原样返回。"""
+    if frame.is_gzip:
+        return gzip.decompress(frame.payload)
+    return frame.payload
+
+
 # 全局单例
 _tunnel_manager: TunnelManager | None = None
 

uv.lock

@@ -14,11 +14,12 @@ dependencies = [
     { name = "apscheduler" },
     { name = "asyncpg" },
     { name = "bcrypt" },
+    { name = "brotli" },
     { name = "certifi" },
     { name = "cryptography" },
     { name = "fastapi", extra = ["standard"] },
     { name = "gunicorn" },
-    { name = "httpx", extra = ["socks"] },
+    { name = "httpx", extra = ["http2", "socks"] },
     { name = "ldap3" },
     { name = "loguru" },
     { name = "openai" },
@@ -70,13 +71,14 @@ requires-dist = [
     { name = "apscheduler", specifier = ">=3.11.2" },
     { name = "asyncpg", specifier = ">=0.31.0" },
     { name = "bcrypt", specifier = ">=5.0.0" },
+    { name = "brotli", specifier = ">=1.1.0" },
     { name = "certifi", specifier = ">=2026.1.4" },
     { name = "cryptography", specifier = ">=46.0.4" },
     { name = "curl-cffi", marker = "extra == 'tls'", specifier = ">=0.7.0" },
     { name = "fastapi", extras = ["standard"], specifier = ">=0.128.0" },
     { name = "gunicorn", specifier = ">=24.1.1" },
     { name = "httpx", marker = "extra == 'dev'", specifier = ">=0.25.0" },
-    { name = "httpx", extras = ["socks"], specifier = ">=0.28.1" },
+    { name = "httpx", extras = ["http2", "socks"], specifier = ">=0.28.1" },
     { name = "ldap3", specifier = ">=2.9.1" },
     { name = "loguru", specifier = ">=0.7.3" },
     { name = "openai", specifier = ">=2.16.0" },
@@ -458,6 +460,44 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/e4/3d/51bdb3ecbfadfaf825ec0c75e1de6077422b4afa2091c6c9ba34fbfc0c2d/black-26.1.0-py3-none-any.whl", hash = "sha256:1054e8e47ebd686e078c0bb0eaf31e6ce69c966058d122f2c0c950311f9f3ede", size = 204010 },
 ]
 
+[[package]]
+name = "brotli"
+version = "1.2.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/f7/16/c92ca344d646e71a43b8bb353f0a6490d7f6e06210f8554c8f874e454285/brotli-1.2.0.tar.gz", hash = "sha256:e310f77e41941c13340a95976fe66a8a95b01e783d430eeaf7a2f87e0a57dd0a", size = 7388632 }
+wheels = [
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