upstream_addr 字段 打印多个端口的问题。

[zhouying370481]

Tengine version: Tengine/2.0.2 (nginx/1.4.6)
server_name xxxx.com {
location /qweixin/ {
proxy_pass http://rssp-act_core_rs_com/;
include proxy.conf;
}
upstream rssp-act_core_rs_com {
server 172.18.48.23:9097;
server 172.18.48.24:9097;
}
}
当我访问xxxx.com/qweixin 的时候，nginx 访问日志：upstream_addr 连续2个端口，
upstream_addr":"172.18.48.23:9097:9097。
完整日志如下：
{"@timestamp":"2024-03-12T11:18:53+08:00","server_addr":"172.16.76.220","server_port":"80","http_COOKIE":"-","ssl_protocol":"-","remote_addr":"58.255.172.138","http_x_forwarded_for":"223.104.76.56","remote_user": "-","time_local": "12/Mar/2024:11:18:53 +0800","request": "GET /qweixin/qwx/common/js/jquery/jquery-1.10.1.min.js HTTP/1.1","host": "static3.xxxx.com","uri":"/qweixin/qwx/common/js/jquery/jquery-1.10.1.min.js","status":"502","body_bytes_sent":"668","request_time":"0.002","upstream_response_time":"0.002, 0.000","upstream_addr":"172.18.48.23:9097:9097","http_referer":"http://weixin.xxxx.com/","http_user_agent":"Mozilla/5.0 (Linux; Android 12; JEF-AN00 Build/HUAWEIJEF-AN00; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Mobile Safari/537.36 XWEB/1160065 MMWEBSDK/20231202 MMWEBID/5362 MicroMessxxnger/8.0.47.2560(0x28002F3B) WeChat/arm64 Weixin NetType/5G Language/zh_CN ABI/arm64"}.

tengine 日志格式：
log_format ngx_json '{"@timestamp":"$time_iso8601",'
'"server_addr":"$server_addr",'
'"server_port":"$server_port",'
'"http_COOKIE":"$http_COOKIE",'
'"ssl_protocol":"$ssl_protocol",'
'"remote_addr":"$remote_addr",'
'"http_x_forwarded_for":"$http_x_forwarded_for",'
'"remote_user": "$remote_user",'
'"time_local": "$time_local",'
'"request": "$request",'
'"host": "$host",'
'"uri":"$uri",'
'"status":"$status",'
'"body_bytes_sent":"$body_bytes_sent",'
'"request_time":"$request_time",'
'"upstream_response_time":"$upstream_response_time",'
'"upstream_addr":"$upstream_addr",'
'"http_referer":"$http_referer",'
'"http_user_agent":"$http_user_agent"}';