734df71303
针对如下场景进行优化 1、ssr-plus仅仅设置了一个服务器节点 2、该节点使用域名地址 3、域名对应的DNS解析ip修改了 问题原因： 在存在多节点情况下，select_proxy会挑选下一个节点重启ssr服务，但是在单一节点下由于不符合if [ "$ENABLE_SERVER" != nil ] 条件，导致并不调用switch_proxy来重启服务。但是域名对应的ip已经修改了，ssr服务本身是依赖ip参数启动的，ssr服务在重启依然停留在老的ip上。 调整方式： 这个修改调整为在每次检测网络失败的情况下，就算只有一个节点，也重启ssr服务，保证ssr服务有机会切换到域名新的ip地址。 此外假如因为ssr服务本身存在一些小概率bug，也可以通过重启ssr解决。 这种情况在付费的ssr服务中很常见，因为服务商往往只提供一个域名，假如因为服务器调整（比如某个服务器ip被和谐了），服务提供商都会重新给域名绑定新的服务器(或新IP)
176 lines
4.5 KiB
Bash
Executable File
176 lines
4.5 KiB
Bash
Executable File
#!/bin/sh /etc/rc.common
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#
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# Copyright (C) 2017 openwrt-ssr
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# Copyright (C) 2017 yushi studio <ywb94@qq.com>
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#
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# This is free software, licensed under the GNU General Public License v3.
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# See /LICENSE for more information.
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#
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cycle_time=60
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switch_time=3
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normal_flag=0
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server_locate=0
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server_count=0
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NAME=shadowsocksr
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ENABLE_SERVER=nil
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CONFIG_SWTICH_FILE=/var/etc/${NAME}_t.json
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[ -n "$1" ] && cycle_time=$1
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[ -n "$2" ] && switch_time=$2
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uci_get_by_name() {
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local ret=$(uci get $NAME.$1.$2 2>/dev/null)
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echo ${ret:=$3}
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}
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uci_get_by_type() {
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local ret=$(uci get $NAME.@$1[0].$2 2>/dev/null)
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echo ${ret:=$3}
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}
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DEFAULT_SERVER=$(uci_get_by_type global global_server)
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CURRENT_SERVER=$DEFAULT_SERVER
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#判断代理是否正常
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check_proxy() {
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/usr/bin/ssr-check www.google.com 80 $switch_time 1
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if [ "$?" == "0" ]; then
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return 0
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else
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/usr/bin/ssr-check www.baidu.com 80 $switch_time 1
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if [ "$?" == "0" ]; then
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#goole不通baidu通则不正常
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return 1
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else
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return 2
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fi
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fi
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return 0
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}
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test_proxy() {
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local servername=$(uci_get_by_name $1 server)
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local serverport=$(uci_get_by_name $1 server_port)
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ret=$(ping -c 3 $servername | grep 'loss' | awk -F ',' '{ print $3 }' | awk -F "%" '{ print $1 }')
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[ -z "$ret" ] && return 1
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[ "$ret" -gt "50" ] && return 1
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ipset add ss_spec_wan_ac $servername 2>/dev/null
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ret=$?
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/usr/bin/ssr-check $servername $serverport $switch_time
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local ret2=$?
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if [ "$ret" = "0" ] ;then
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ipset del ss_spec_wan_ac $servername 2>/dev/null
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fi
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if [ "$ret2" = "0" ] ;then
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return 0
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else
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return 1
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fi
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}
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search_proxy() {
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let server_count=server_count+1
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[ "$normal_flag" = "1" -a "$server_count" -le "$server_locate" ] && return 0
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[ "$(uci_get_by_name $1 switch_enable)" != "1" ] && return 1
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[ $ENABLE_SERVER != nil ] && return 0
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[ "$1" = "$CURRENT_SERVER" ] && return 0
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local servername=$(uci_get_by_name $1 server)
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local serverport=$(uci_get_by_name $1 server_port)
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ipset add ss_spec_wan_ac $servername 2>/dev/null
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ret=$?
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/usr/bin/ssr-check $servername $serverport $switch_time
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local ret2=$?
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if [ "$ret" = "0" ] ;then
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ipset del ss_spec_wan_ac $servername 2>/dev/null
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fi
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if [ "$ret2" = "0" ] ;then
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server_locate=$server_count
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ENABLE_SERVER=$1
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return 0
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else
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return 1
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fi
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}
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#选择可用的代理
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select_proxy() {
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config_load $NAME
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ENABLE_SERVER=nil
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mkdir -p /var/run /var/etc
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server_count=0
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config_foreach search_proxy servers
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}
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#切换代理
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switch_proxy() {
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/etc/init.d/shadowsocksr restart $1
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return 0
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}
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start() {
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#不支持kcptun启用时的切换
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[ $(uci_get_by_name $DEFAULT_SERVER kcp_enable) = "1" ] && return 1
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while [ "1" = "1" ] #死循环
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do
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sleep $cycle_time
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LOGTIME=$(date "+%Y-%m-%d %H:%M:%S")
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#判断当前代理是否为缺省服务器
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if [ "$CURRENT_SERVER" != "$DEFAULT_SERVER" ] ;then
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#echo "not default proxy"
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echo "$(date "+%Y-%m-%d %H:%M:%S") Current server is not default Main server, try to switch back." >> /tmp/ssrplus.log
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#检查缺省服务器是否正常
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if test_proxy $DEFAULT_SERVER ;then
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#echo "switch to default proxy"
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echo "$(date "+%Y-%m-%d %H:%M:%S") Main server is avilable." >> /tmp/ssrplus.log
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#缺省服务器正常，切换回来
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CURRENT_SERVER=$DEFAULT_SERVER
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switch_proxy $CURRENT_SERVER
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echo "switch to default ["$(uci_get_by_name $CURRENT_SERVER server)"] proxy!" >> /tmp/ssrplus.log
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continue
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else
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echo "$(date "+%Y-%m-%d %H:%M:%S") Main server is NOT avilable.Continue using current server." >> /tmp/ssrplus.log
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fi
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fi
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#判断当前代理是否正常
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check_proxy
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current_ret=$?
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if [ "$current_ret" = "1" ] ;then
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#当前代理错误，判断有无可用的服务器
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#echo "current error"
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echo "$(date "+%Y-%m-%d %H:%M:%S") Current server error, try to switch another server." >> /tmp/ssrplus.log
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select_proxy
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if [ "$ENABLE_SERVER" != nil ] ;then
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#有其他服务器可用，进行切换
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#echo $(uci_get_by_name $new_proxy server)
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echo "$(date "+%Y-%m-%d %H:%M:%S") Another server is avilable, now switching server." >> /tmp/ssrplus.log
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CURRENT_SERVER=$ENABLE_SERVER
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switch_proxy $CURRENT_SERVER
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normal_flag=1
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echo "$(date "+%Y-%m-%d %H:%M:%S") ShadowsocksR server switch OK" >> /tmp/ssrplus.log
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else
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switch_proxy $CURRENT_SERVER
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normal_flag=1
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echo "$(date "+%Y-%m-%d %H:%M:%S") Try restart current server." >> /tmp/ssrplus.log
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fi
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else
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normal_flag=0
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echo "$(date "+%Y-%m-%d %H:%M:%S") ShadowsocksR No Problem." >> /tmp/ssrplus.log
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fi
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done
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}
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