Flask 中的重定向和 url_for 通过 Gunicorn 和 Nginx 在产品服务器上添加域两次

Question

我在产品服务器上的 Flask 中重定向时遇到问题。注意：这不会在本地发生，只有当运行在带有 Nginx 和 Gunicorn 的生产服务器上时才会发生。添加 https 和域时出现问题。我不确定问题出在 flask 还是我的 nginx 设置上。

所有重定向都会出现我的问题，但这里有一个示例：return redirect(url_for('.login'))。这里的预期输出是 "domain.com/login"，但它重定向到 "domain.com%2Cdomain.com/login"。当我打印 `url_for('.login') 时，它显示“/login”。

在寻找解决方案时，我发现它可能与我的 nginx 设置有关，所以它们是：

server {
    server_name domain.com www.domain.com;

    #Fix for socket.io, dont think this is related
    location /socket.io {
            proxy_pass http://127.0.0.1:8088/socket.io;
            proxy_redirect off;
            proxy_buffering off;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
}

    location / {
            include proxy_params;
            proxy_pass http://127.0.0.1:8088;
    }

listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/domain.com/fullchain.pem; # managed by 
Certbot
ssl_certificate_key /etc/letsencrypt/live/domain.com/privkey.pem; # managed 
by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot


}
server {
if ($host = www.domain.com) {
    return 301 https://$host$request_uri;
} # managed by Certbot


if ($host = domain.com) {
    return 301 https://$host$request_uri;
} # managed by Certbot


    listen 80;
    server_name domain.com www.domain.com;
return 404; # managed by Certbot
}

请注意，我用 "domain.com" 替换了我们的域名。

如果我能提供更多信息，请告诉我。

编辑：已解决。我不得不在我的 nginx 配置文件中删除 include proxy_params; 行。我不知道为什么，但它奏效了。现在行为符合预期。我试图将此 post 标记为已解决，但它说我需要等待几天。

Answer 1

好的，我明白了。我必须删除我的 nginx 配置文件中的 include proxy_params; 行。不知道为什么，但之后它按预期工作。

Answer 2

我也遇到了同样的问题。我删除了 include proxy_params; 但它没有解决问题。如果有人能帮助我，我将不胜感激。这是我的 nginx 配置：

server {
    # listen on port 80 (http)
    listen 80;
    server_name domain.com;
    location /.well-known {
        root /to/dorectory/where/the/files/are;
    }
    location / {
        # redirect any requests to the same URL but on https
        return 301 https://$host$request_uri;
    }
}
server {
    # listen on port 443 (https)
    listen 443 ssl;
    server_name domain.com;

    # location of the SSL certificate
    ssl_certificate /to/fullchain.pem;
    ssl_certificate_key /to/privkey.pem;

    # write access and error logs to /var/log
    access_log /to/mysite_access.log;
    error_log /to/mysite_error.log;

    location / {
        # forward application requests to the gunicorn server
        proxy_pass http://localhost:8000;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

    location /static {
        # handle static files directly, without forwarding to the application
        alias /to/static/directory;
    }
}

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