feat: ✨ add CLAUDE.md for project guidance and enhance HTTP proxy validation

- Introduced CLAUDE.md to provide comprehensive guidance for the GoProxy project.
- Enhanced proxy validation logic to include HTTPS CONNECT tunnel verification for HTTP proxies.
- Updated README to reflect new features, including the addition of an HTTP proxy HTTPS access testing script.
- Adjusted configuration parameters to set the default HTTP protocol ratio to 30%.

test/test_http_https.sh

@@ -0,0 +1,81 @@
+#!/bin/bash
+
+# GoProxy HTTP 协议代理 HTTPS 访问测试脚本
+# 随机访问多个 HTTPS 网站，验证 HTTP 代理的 CONNECT 隧道能力
+# 用法: ./test_http_https.sh [端口号，默认7777] [测试次数，默认持续运行]
+# 按 Ctrl+C 停止测试
+
+PROXY_HOST="127.0.0.1"
+PROXY_PORT="${1:-7777}"
+MAX_COUNT="${2:-0}"  # 0 = 持续运行
+DELAY=2
+
+# 测试目标（HTTPS 网站）
+TARGETS=(
+    "https://www.google.com"
+    "https://www.openai.com"
+    "https://www.github.com"
+    "https://www.cloudflare.com"
+    "https://httpbin.org/ip"
+)
+
+# 统计变量
+total=0
+success=0
+fail=0
+
+# 获取毫秒时间戳
+get_ms_time() {
+    python3 -c 'import time; print(int(time.time() * 1000))'
+}
+
+# 捕获 Ctrl+C 信号
+trap ctrl_c INT
+function ctrl_c() {
+    echo ""
+    echo "---"
+    if [ $total -gt 0 ]; then
+        loss_rate=$(awk "BEGIN {printf \"%.1f\", ($total - $success)/$total*100}")
+        success_rate=$(awk "BEGIN {printf \"%.1f\", $success/$total*100}")
+        echo "$total requests transmitted, $success succeeded, $fail failed, ${loss_rate}% loss, ${success_rate}% success rate"
+    fi
+    exit 0
+}
+
+echo "HTTP PROXY HTTPS TEST — $PROXY_HOST:$PROXY_PORT"
+echo "targets: ${#TARGETS[@]} HTTPS sites"
+echo ""
+
+while true; do
+    # 随机选择目标
+    idx=$((RANDOM % ${#TARGETS[@]}))
+    target="${TARGETS[$idx]}"
+
+    total=$((total + 1))
+
+    start_time=$(get_ms_time)
+    response=$(curl -x "http://${PROXY_HOST}:${PROXY_PORT}" \
+                   -s -k \
+                   -o /dev/null \
+                   -w "%{http_code}" \
+                   --connect-timeout 10 \
+                   --max-time 15 \
+                   "${target}" 2>&1)
+    end_time=$(get_ms_time)
+    elapsed=$((end_time - start_time))
+
+    if [[ "$response" =~ ^[23] ]]; then
+        echo "✅ seq=$total ${target} -> HTTP $response time=${elapsed}ms"
+        success=$((success + 1))
+    else
+        echo "❌ seq=$total ${target} -> HTTP $response time=${elapsed}ms"
+        fail=$((fail + 1))
+    fi
+
+    # 达到指定次数则停止
+    if [ "$MAX_COUNT" -gt 0 ] && [ "$total" -ge "$MAX_COUNT" ]; then
+        ctrl_c
+    fi
+
+    sleep $DELAY
+done