我有一个网站，它有以下设置：

• 客户端是一个角14投影
• 服务器是一个python应用程序，带有用于graphql的草莓
• 使用nginx作为Web服务器
• 使用asgi python脚本运行应用程序

当我尝试从Angular 应用程序访问graphql时，出现cors相关错误
Access to XMLHttpRequest at 'https://URL/graphql' from origin 'https://URL' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: Redirect is not allowed for a preflight request.
在nginx服务器中，我设置了来自let加密的证书listen 443 ssl http2;
我为python项目创建了一个上游设置：

upstream myproj-server {
  server 127.0.0.1:8001;
  }

创建了一个位置后端：

location @backend {
    proxy_pass http://myproj-server; # <--- THIS DOES NOT HAVE A TRAILING '/'
    #proxy_set_header 'Access-Control-Allow-Origin' "*";
    #proxy_set_header 'Access-Control-Allow-Credentials' 'true';
    #proxy_set_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS';
    #proxy_set_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Requested-With';
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_http_version 1.1;
    proxy_set_header X-NginX-Proxy true;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_cache_bypass $http_upgrade;
    proxy_redirect off;
    proxy_set_header X-Forwarded-Proto $scheme;
}

和设置Graphql位置：

location /graphql {
#           add_header 'Access-Control-Allow-Origin' "*" always;
#        add_header 'Access-Control-Allow-Credentials' 'true' always;
#        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
#        add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Requested-With' always;

        try_files $uri $uri/ @backend;
    }

我注解掉了带有#的CORS行，但我确实尝试启用它们，以便在/graphql位置或在backend中配置的代理上添加cors，这两种配置都没有更改任何内容。
接下来，我有一个带有asgi应用程序的server.py，该应用程序带有graphql的草莓插件：

from strawberry.asgi import GraphQL

from app import schema

app = GraphQL(schema, graphiql=False)

以daphne -b 0.0.0.0 -p 8001 server:app开头
这里我尝试修改server.py以使用Starlette CORS中间件

from strawberry.asgi import GraphQL
from starlette.middleware.cors import CORSMiddleware
from starlette.middleware import Middleware
from starlette.applications import Starlette

from app import schema

middleware = [
    Middleware(CORSMiddleware, allow_origins=['*'],
    allow_methods=["*"],
    allow_credentials=True,
    allow_headers=["*"],)
]

graphql_app=GraphQL(schema, graphiql=True)

app = Starlette(middleware=middleware)
app.add_route("/graphql", graphql_app)
app.add_websocket_route("/graphql", graphql_app)

结果也是一样的
我确信反向代理可以正常工作，因为如果我将graphiql设置为True并浏览mydomain/graphql，它确实会打开graphql-playground。
所以我尝试了任何我能想到的，我是相当多，所以任何想法或任何有关这个问题的信息将不胜感激。