Current Behavior

Every request produces "request.lua:120: set_header(): DEPRECATED" warning in error.log. It makes error.log useless

Expected Behavior

The deprecated set_header call needs to be changed

Error Logs

2023/02/08 06:20:11 [warn] 9883#9883: *152597 [lua] request.lua:120: set_header(): DEPRECATED: use set_header(ctx, header_name, header_value) instead, client: 10.11.69.11, server: _, request: "POST /g/gw/interface/performance/v2.0/data HTTP/1.1", host: "36.133.195.59:18081"
2023/02/08 06:20:11 [warn] 9883#9883: *153292 [lua] request.lua:120: set_header(): DEPRECATED: use set_header(ctx, header_name, header_value) instead, client: 10.11.69.8, server: _, request: "POST /g/gw/interface/performance/v2.0/data HTTP/1.1", host: "36.133.195.59:18081"
2023/02/08 06:20:11 [warn] 9883#9883: *153292 [lua] request.lua:120: set_header(): DEPRECATED: use set_header(ctx, header_name, header_value) instead, client: 10.11.69.8, server: _, request: "POST /g/gw/interface/performance/v2.0/data HTTP/1.1", host: "36.133.195.59:18081"
2023/02/08 06:20:11 [warn] 9884#9884: *153311 [lua] request.lua:120: set_header(): DEPRECATED: use set_header(ctx, header_name, header_value) instead, client: 10.11.69.11, server: _, request: "POST /g/gw/interface/performance/v2.0/data HTTP/1.1", host: "36.133.195.59:18081"
2023/02/08 06:20:11 [warn] 9884#9884: *153311 [lua] request.lua:120: set_header(): DEPRECATED: use set_header(ctx, header_name, header_value) instead, client: 10.11.69.11, server: _, request: "POST /g/gw/interface/performance/v2.0/data HTTP/1.1", host: "36.133.195.59:18081"

Steps to Reproduce

1. yum install apisix
2. create conf/config.yaml

deployment:
  role: traditional
  role_traditional:
    config_provider: etcd
  etcd:
    host:
      - http://localhost:2379

  admin:
    admin_key:
      - name: admin
        key: edd1c9f034335f136f87ad84b625c8f1  # using fixed API token has security risk, please update it when you deploy to production environment
        role: admin

apisix:
  #ssl:
  #  ssl_trusted_certificate: /usr/local/apisix/conf/nifi-cert.pem
  ssl:
    enable: true
    listen:                       # APISIX listening port in https.
      - port: 19443
        enable_http2: true

  node_listen:
    - 18092 # APISIX listening port
    - 18093

plugin_attr:
  prometheus:
    export_uri: /apisix/prometheus/metrics
    metric_prefix: apisix_
    enable_export_server: true
    export_addr:
      ip: hb3-ifz-bridge-000
      port: 9091

  log-rotate:
    interval: 3600    # rotate interval (unit: second)
    max_kept: 168     # max number of log files will be kept
    max_size: -1      # max size bytes of log files to be rotated, size check would be skipped with a value less than 0
    enable_compression: false    # enable log file compression(gzip) or not, default false

4. systemctl start apisix
5. create route in apisixw-dashboard

{
  "uri": "/g/gw/*",
  "name": "REST API 测试 18092",
  "methods": [
    "GET",
    "POST",
    "PUT",
    "DELETE",
    "PATCH",
    "HEAD",
    "OPTIONS",
    "CONNECT",
    "TRACE",
    "PURGE"
  ],
  "vars": [
    [
      "server_port",
      "==",
      "18092"
    ]
  ],
  "plugins": {
    "proxy-rewrite": {
      "headers": {
        "gem_environment": "test",
        "rest_gw_proxy_port": "$server_port"
      }
    }
  },
  "upstream_id": "439498101292534097",
  "status": 1
}

Environment

• APISIX version (run apisix version): 3.1.0
• Operating system (run uname -a): 3.10.0-1160.25.1.el7.x86_64
• OpenResty / Nginx version (run openresty -V or nginx -V):nginx version: openresty/1.21.4.1
• etcd version, if relevant (run curl http://127.0.0.1:9090/v1/server_info): 3.5.0
• APISIX Dashboard version, if relevant: 3.0.0
• Plugin runner version, for issues related to plugin runners: prometheus, log-rotate
• LuaRocks version, for installation issues (run luarocks --version):