From 6c5a082457bd5f74b40acdefec027012a6bfbafe Mon Sep 17 00:00:00 2001
From: roc <roc@imroc.cc>
Date: Fri, 4 Aug 2023 11:08:27 +0800
Subject: [PATCH] move chromeXXX vars into var block

---
 client_impersonate.go | 139 +++++++++++++++++++++---------------------
 1 file changed, 71 insertions(+), 68 deletions(-)

diff --git a/client_impersonate.go b/client_impersonate.go
index ff6f3cf1..e20b4e12 100644
--- a/client_impersonate.go
+++ b/client_impersonate.go
@@ -5,71 +5,78 @@ import (
 	utls "github.com/refraction-networking/utls"
 )
 
-var http2SettingsChrome = []http2.Setting{
-	{
-		ID:  http2.SettingHeaderTableSize,
-		Val: 65536,
-	},
-	{
-		ID:  http2.SettingEnablePush,
-		Val: 0,
-	},
-	{
-		ID:  http2.SettingMaxConcurrentStreams,
-		Val: 1000,
-	},
-	{
-		ID:  http2.SettingInitialWindowSize,
-		Val: 6291456,
-	},
-	{
-		ID:  http2.SettingMaxHeaderListSize,
-		Val: 262144,
-	},
-}
+var (
+	chromeHttp2Settings = []http2.Setting{
+		{
+			ID:  http2.SettingHeaderTableSize,
+			Val: 65536,
+		},
+		{
+			ID:  http2.SettingEnablePush,
+			Val: 0,
+		},
+		{
+			ID:  http2.SettingMaxConcurrentStreams,
+			Val: 1000,
+		},
+		{
+			ID:  http2.SettingInitialWindowSize,
+			Val: 6291456,
+		},
+		{
+			ID:  http2.SettingMaxHeaderListSize,
+			Val: 262144,
+		},
+	}
 
-var chromeHeaderOrder = []string{
-	"host",
-	"pragma",
-	"cache-control",
-	"sec-ch-ua",
-	"sec-ch-ua-mobile",
-	"sec-ch-ua-platform",
-	"upgrade-insecure-requests",
-	"user-agent",
-	"accept",
-	"sec-fetch-site",
-	"sec-fetch-mode",
-	"sec-fetch-user",
-	"sec-fetch-dest",
-	"referer",
-	"accept-encoding",
-	"accept-language",
-	"cookie",
-}
+	chromeHeaderOrder = []string{
+		"host",
+		"pragma",
+		"cache-control",
+		"sec-ch-ua",
+		"sec-ch-ua-mobile",
+		"sec-ch-ua-platform",
+		"upgrade-insecure-requests",
+		"user-agent",
+		"accept",
+		"sec-fetch-site",
+		"sec-fetch-mode",
+		"sec-fetch-user",
+		"sec-fetch-dest",
+		"referer",
+		"accept-encoding",
+		"accept-language",
+		"cookie",
+	}
 
-var chromePseudoHeaderOrder = []string{
-	":method",
-	":authority",
-	":scheme",
-	":path",
-}
+	chromePseudoHeaderOrder = []string{
+		":method",
+		":authority",
+		":scheme",
+		":path",
+	}
 
-var chromeHeaders = map[string]string{
-	"pragma":                    "no-cache",
-	"cache-control":             "no-cache",
-	"sec-ch-ua":                 `"Not_A Brand";v="99", "Google Chrome";v="109", "Chromium";v="109"`,
-	"sec-ch-ua-mobile":          "?0",
-	"sec-ch-ua-platform":        `"macOS"`,
-	"upgrade-insecure-requests": "1",
-	"user-agent":                "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36",
-	"accept":                    "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
-	"sec-fetch-site":            "none",
-	"sec-fetch-mode":            "navigate",
-	"sec-fetch-user":            "?1",
-	"sec-fetch-dest":            "document",
-	"accept-language":           "zh-CN,zh;q=0.9,en;q=0.8,zh-TW;q=0.7,it;q=0.6",
-}
+	chromeHeaders = map[string]string{
+		"pragma":                    "no-cache",
+		"cache-control":             "no-cache",
+		"sec-ch-ua":                 `"Not_A Brand";v="99", "Google Chrome";v="109", "Chromium";v="109"`,
+		"sec-ch-ua-mobile":          "?0",
+		"sec-ch-ua-platform":        `"macOS"`,
+		"upgrade-insecure-requests": "1",
+		"user-agent":                "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36",
+		"accept":                    "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9",
+		"sec-fetch-site":            "none",
+		"sec-fetch-mode":            "navigate",
+		"sec-fetch-user":            "?1",
+		"sec-fetch-dest":            "document",
+		"accept-language":           "zh-CN,zh;q=0.9,en;q=0.8,zh-TW;q=0.7,it;q=0.6",
+	}
+	chromeHeaderPriority = http2.PriorityParam{
+		StreamDep: 0,
+		Exclusive: true,
+		Weight:    255,
+	}
+)
 
 // ImpersonateChrome impersonates Chrome browser (version 109).
 func (c *Client) ImpersonateChrome() *Client {
@@ -77,12 +84,8 @@ func (c *Client) ImpersonateChrome() *Client {
 		SetCommonPseudoHeaderOder(chromePseudoHeaderOrder...).
 		SetCommonHeaders(chromeHeaders).
 		SetCommonHeaderOrder(chromeHeaderOrder...).
-		SetHTTP2SettingsFrame(http2SettingsChrome...).
+		SetHTTP2SettingsFrame(chromeHttp2Settings...).
 		SetHTTP2ConnectionFlow(15663105).
-		SetHTTP2HeaderPriority(http2.PriorityParam{
-			StreamDep: 0,
-			Exclusive: true,
-			Weight:    255,
-		})
+		SetHTTP2HeaderPriority(chromeHeaderPriority)
 	return c
 }