From 4a4ad8b821ee56501165af1ad5037d90f8eaa565 Mon Sep 17 00:00:00 2001
From: mango <mango082888-bit@users.noreply.github.com>
Date: Sat, 14 Feb 2026 21:26:06 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E9=9B=86=E6=88=90=20BBR=20Blast=20Smoo?=
 =?UTF-8?q?th=20v2=20=E5=8A=A0=E9=80=9F=E4=BC=98=E5=8C=96?=
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---
 ss-rust.sh | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 93 insertions(+), 1 deletion(-)

diff --git a/ss-rust.sh b/ss-rust.sh
index 61640b4..26ca581 100644
--- a/ss-rust.sh
+++ b/ss-rust.sh
@@ -380,6 +380,91 @@ with open('/etc/shadowsocks-rust/config.json','w') as f:
     show_result
 }
 
+# ============ BBR 优化 ============
+setup_bbr() {
+    echo ""
+    echo -e "${CYAN}════════════════════════════════════════${NC}"
+    echo -e "${CYAN}  ⚡ BBR Blast Smooth v2${NC}"
+    echo -e "${CYAN}════════════════════════════════════════${NC}"
+    echo ""
+
+    # 检测是否已启用
+    local cc=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)
+    local qd=$(sysctl -n net.core.default_qdisc 2>/dev/null)
+    if [[ "$cc" == "bbr" && "$qd" == "fq" ]]; then
+        info "BBR 已启用 (congestion=$cc, qdisc=$qd)"
+        grep -q "BBR Blast" /etc/sysctl.conf 2>/dev/null && info "BBR Blast 配置已存在" && return 0
+    fi
+
+    # 检测系统
+    if [[ ! -f /etc/os-release ]]; then
+        warn "无法检测系统，跳过 BBR"; return 1
+    fi
+    . /etc/os-release
+    local os_name="$ID $VERSION_ID"
+    info "系统: $os_name"
+
+    # 检测内存，选择 profile
+    local mem=$(free -m | awk '/^Mem:/{print $2}')
+    local profile rmem wmem tcp_rmem tcp_wmem
+    if [[ "$mem" -lt 512 ]]; then
+        profile="micro"; rmem=8388608; wmem=8388608
+        tcp_rmem="4096 32768 8388608"; tcp_wmem="4096 32768 8388608"
+    elif [[ "$mem" -lt 1024 ]]; then
+        profile="small"; rmem=16777216; wmem=16777216
+        tcp_rmem="4096 65536 16777216"; tcp_wmem="4096 65536 16777216"
+    elif [[ "$mem" -lt 2048 ]]; then
+        profile="medium"; rmem=33554432; wmem=33554432
+        tcp_rmem="4096 87380 33554432"; tcp_wmem="4096 65536 33554432"
+    elif [[ "$mem" -lt 4096 ]]; then
+        profile="large"; rmem=67108864; wmem=67108864
+        tcp_rmem="4096 87380 67108864"; tcp_wmem="4096 65536 67108864"
+    else
+        profile="xlarge"; rmem=134217728; wmem=134217728
+        tcp_rmem="4096 87380 134217728"; tcp_wmem="4096 65536 134217728"
+    fi
+    info "内存: ${mem}MB | Profile: $profile | Buffer: $((rmem/1024/1024))MB"
+
+    # 备份
+    if [[ -f /etc/sysctl.conf ]]; then
+        cp /etc/sysctl.conf /etc/sysctl.conf.bak.$(date +%Y%m%d%H%M%S)
+    fi
+
+    # 写入配置
+    sed -i '/# === BBR Blast/,/# === END BBR/d' /etc/sysctl.conf 2>/dev/null || true
+    cat >> /etc/sysctl.conf <<SYSCTL
+
+# === BBR Blast Smooth v2 (Profile: $profile) ===
+net.core.default_qdisc=fq
+net.ipv4.tcp_congestion_control=bbr
+net.core.rmem_max=$rmem
+net.core.wmem_max=$wmem
+net.ipv4.tcp_rmem=$tcp_rmem
+net.ipv4.tcp_wmem=$tcp_wmem
+net.ipv4.tcp_fin_timeout=8
+net.ipv4.tcp_tw_reuse=1
+net.ipv4.tcp_window_scaling=1
+net.ipv4.tcp_timestamps=1
+net.ipv4.tcp_sack=1
+net.ipv4.tcp_no_metrics_save=1
+net.core.somaxconn=65535
+net.ipv4.tcp_max_syn_backlog=65535
+net.ipv4.tcp_fastopen=3
+# === END BBR ===
+SYSCTL
+
+    sysctl -p >/dev/null 2>&1
+
+    # 验证
+    cc=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)
+    qd=$(sysctl -n net.core.default_qdisc 2>/dev/null)
+    if [[ "$cc" == "bbr" && "$qd" == "fq" ]]; then
+        info "BBR 启用成功 ✓ (congestion=$cc, qdisc=$qd)"
+    else
+        warn "BBR 可能需要重启生效"
+    fi
+}
+
 # ============ 卸载 ============
 uninstall() {
     warn "卸载 shadowsocks-rust..."
@@ -402,6 +487,10 @@ do_install() {
     setup_service
     gen_subscribe
     show_result
+    echo ""
+    read -rp "是否开启 BBR 加速? [Y/n]: " bbr_choice
+    bbr_choice=${bbr_choice:-Y}
+    [[ "$bbr_choice" =~ ^[Yy]$ ]] && setup_bbr
 }
 
 # ============ 管理菜单 ============
@@ -419,10 +508,11 @@ show_menu() {
     echo -e "  ${GREEN}6.${NC} 停止服务"
     echo -e "  ${GREEN}7.${NC} 重启服务"
     echo -e "  ${GREEN}8.${NC} 查看日志"
+    echo -e "  ${GREEN}10.${NC} ⚡ BBR 加速优化"
     echo -e "  ${RED}9.${NC} 卸载"
     echo -e "  ${YELLOW}0.${NC} 退出"
     echo ""
-    read -rp "请选择 [0-9]: " choice
+    read -rp "请选择 [0-10]: " choice
 
     case "$choice" in
         1) do_install ;;
@@ -434,6 +524,7 @@ show_menu() {
         7) systemctl restart ss-rust && info "已重启" ;;
         8) journalctl -u ss-rust --no-pager -n 30 ;;
         9) uninstall ;;
+        10) setup_bbr ;;
         0) exit 0 ;;
         *) warn "无效选择" ;;
     esac
@@ -451,6 +542,7 @@ main() {
         stop)               systemctl stop ss-rust && info "已停止" ;;
         log|logs)           journalctl -u ss-rust --no-pager -n 30 ;;
         reset)              reset_keys ;;
+        bbr)                setup_bbr ;;
         *)
             if [[ -f /etc/shadowsocks-rust/config.json ]]; then
                 show_menu