我正在Ubuntu上测试一个本地Icecast服务器，使用Docker容器中的Traefik 1.7。
当手动转到子域上的页面时，所有CORS标头均已设置：

但是从另一个本地域访问页面总是在OPTIONS上出现502错误。
我已经设法从Traefik容器中获得了一些调试信息，但我不知道如何解决这个问题。

everse-proxy    | time="2022-11-11T21:08:01Z" level=debug msg="vulcand/oxy/forward/http: begin ServeHttp on request" Request="{\"Method\":\"OPTIONS\",\"URL\":{\"Scheme\":\"http\",\"Opaque\":\"\",\"User\":null,\"Host\":\"10.10.1.8:8000\",\"Path\":\"\",\"RawPath\":\"\",\"ForceQuery\":false,\"RawQuery\":\"\",\"Fragment\":\"\",\"RawFragment\":\"\"},\"Proto\":\"HTTP/2.0\",\"ProtoMajor\":2,\"ProtoMinor\":0,\"Header\":{\"Accept\":[\"*/*\"],\"Accept-Encoding\":[\"gzip, deflate, br\"],\"Accept-Language\":[\"en-US,en;q=0.9,nl;q=0.8\"],\"Access-Control-Request-Headers\":[\"icy-metadata\"],\"Access-Control-Request-Method\":[\"GET\"],\"Cache-Control\":[\"no-cache\"],\"Origin\":[\"https://gsr.localhost.traefik.me\"],\"Pragma\":[\"no-cache\"],\"Referer\":[\"https://gsr.localhost.traefik.me/\"],\"Sec-Fetch-Dest\":[\"empty\"],\"Sec-Fetch-Mode\":[\"cors\"],\"Sec-Fetch-Site\":[\"same-site\"],\"User-Agent\":[\"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36\"]},\"ContentLength\":0,\"TransferEncoding\":null,\"Host\":\"radio.localhost.traefik.me\",\"Form\":null,\"PostForm\":null,\"MultipartForm\":null,\"Trailer\":null,\"RemoteAddr\":\"127.0.0.1:53784\",\"RequestURI\":\"/radio\",\"TLS\":null}"
reverse-proxy    | time="2022-11-11T21:08:01Z" level=debug msg="Upstream ResponseWriter of type *pipelining.writerWithoutCloseNotify does not implement http.CloseNotifier. Returning dummy channel."
reverse-proxy    | time="2022-11-11T21:08:01Z" level=debug msg="'502 Bad Gateway' caused by: EOF"
reverse-proxy    | time="2022-11-11T21:08:01Z" level=debug msg="vulcand/oxy/forward/http: Round trip: http://10.10.1.8:8000, code: 502, Length: 11, duration: 5.960359ms tls:version: 303, tls:resume:true, tls:csuite:c02f, tls:server:radio.localhost.traefik.me"

docker-compose.yml：

version: "3.1"

networks:
  db_default:
    external: true

services:
  reverse-proxy:
    container_name: reverse-proxy
    image: traefik:v1.7-alpine # The official Traefik docker image
    network_mode: "host"
    command: --api  --docker # Enables the web UI and tells Tr  fik to listen to docker
    volumes:
      - ./docker:/certs:ro
      - ./docker/traefik.toml:/etc/traefik/traefik.toml
      - /var/run/docker.sock:/var/run/docker.sock # So that Traefik can listen to the Docker events

  gsr2:
      container_name: gsrdev2
      build: docker
      volumes:
        - .bash_history:/root/.bash_history
        - ./:/var/www
        - ./log:/tmp/audit
      environment:
        #PHP_IDE_CONFIG: "serverName=gsr2.localhost.xip.io"
        XDEBUG_CONFIG: "start_with_request=yes"
      labels:
        - traefik.enable=true
        - "traefik.frontend.rule=Host:gsr.localhost.traefik.me"
      networks:
        - db_default

  icecast2:
    image: pltnk/icecast2
    container_name: icecast2
    expose:
      - 8000
    volumes:
      - ./icecast.xml:/etc/icecast2/icecast.xml
      - ./log:/var/log/icecast2
      - ./docker/bundle.pem:/etc/icecast2/bundle.pem
    labels:
      - traefik.enable=true
      - "traefik.frontend.rule=Host:radio.localhost.traefik.me"
    networks:
      - db_default

traefik.toml：

defaultEntryPoints = ["http","https"]

loglevel="DEBUG"

[api]
    dashboard = false

[entryPoints]

[entryPoints.http]
    address = ":80"
#[entryPoints.http.redirect]
#    regex = "^http://(www.)*(.*)"
#    replacement = "https://$2"
#    permanent = true

[entryPoints.https]
    address = ":443"
    [entryPoints.https.tls]
       [[entryPoints.https.tls.certificates]]
           certFile = "/certs/cert.pem"
           keyFile = "/certs/key.pem"

[docker]
endpoint = "unix:///var/run/docker.sock"
domain = "localhost.traefik.me"
watch = true
exposedbydefault = false
network = "proxy"

Icecast服务器中的标头配置：

<http-headers>
        <header name="Access-Control-Allow-Origin" value="*" />
        <header name="Vary" value="Origin" />
        <header name="Access-Control-Allow-Methods" value="GET, OPTIONS, PUT, POST" />
        <header name="Access-Control-Allow-Headers" value="Content-Type, Icy-Metadata" />
        <header name="Access-Control-Expose-Headers" value="Icy-MetaInt, Icy-Br, Icy-Description, Icy-Genre, Icy-Name, Ice-Audio-Info, Icy-Url, Icy-Sr, Icy-Vbr, Icy-Pub" />

    </http-headers>