Question

我有一个Nginx + uWSGI + Flask设置，实现了一个Web应用程序，用户可以在其中下载大文件（大约3GB）。问题是，有时在使用Firefox时下载不会启动（下载管理器栏会来回移动）。 Chrome不会发生此问题。

在uWSGI日志中，显示以下消息：

uwsgi_response_write_body_do() TIMEOUT !!! 
OSError: write error

我尝试在Nginx配置文件中设置uwsgi_max_temp_file_size 0;，但这不能解决我的问题。

这里是所有相关代码。

烧瓶代码

def generate():

    # create and return your data in small parts here
    with open(os.path.abspath(app.root_path)+server_path, 'rb') as f:
        while True:
            read_data = f.read(1024)
            if not read_data:
                break # done
            yield read_data            

response = Response(stream_with_context(generate()), mimetype=mimetype)
response.headers['Content-Disposition'] = 'attachment; filename={}'.format(file_basename)
response.headers['Content-Length'] = os.path.getsize(os.path.abspath(app.root_path)+server_path)
return response

uWSGI

[uwsgi]

virtualenv = /home/simone/Documents/LabDash/venv

mount = /home/simone/Documents/LabDash=LabDash:app

; tell uWSGI to rewrite PATH_INFO and SCRIPT_NAME according to mount-points
manage-script-name = true

master = true
processes = 5

socket = LabDash.sock
chmod-socket = 660
vacuum = true

die-on-term = true

; to remove in production, just used for debugging
catch-exceptions= true

; auto-reload feature
touch-reload = /home/simone/Documents/LabDash/app/routes.py

Nginx

    user www-data;
    worker_processes auto;
    pid /run/nginx.pid;
    include /etc/nginx/modules-enabled/*.conf;

    events {
        worker_connections 768;
        # multi_accept on;
    }

    http {

        ##
        # Basic Settings
        ##

        sendfile on;
        tcp_nopush on;
        tcp_nodelay on;
        keepalive_timeout 65;
        types_hash_max_size 2048;
        # server_tokens off;

        # server_names_hash_bucket_size 64;
        # server_name_in_redirect off;

        include /etc/nginx/mime.types;
        default_type application/octet-stream;

        ##
        # SSL Settings
        ##

        ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
        ssl_prefer_server_ciphers on;

        ##
        # Logging Settings
        ##

        access_log /var/log/nginx/access.log;
        error_log /var/log/nginx/error.log debug;

        ##
        # Gzip Settings
        ##

        gzip on;

        ##
        # Virtual Host Configs
        ##

        include /etc/nginx/conf.d/*.conf;
        include /etc/nginx/sites-enabled/*;
    }

server {
listen 4000;
client_max_body_size 10G;
server_name testdomain www.testdomain;

location / {
    include uwsgi_params;
    uwsgi_pass unix:/home/simone/Documents/LabDash/LabDash.sock;
   }
}

在Nginx错误日志中：

writev() failed (104: Connection reset by peer) while reading upstream

如果使用Flask的send_file代替流式传输，则问题仍然存在，并且在Nginx的日志中，我有：

epoll_wait() reported that client prematurely closed connection, so upstream connection is closed too

Nginx + uWSGI + Flask：使用Firefox下载文件时出现OSError

0 个答案: