与ExpressJS，nginx代理服务器的EPIPE错误

Question

我通过Nginx代理服务器运行多个ExpressJS Node应用程序，并且每当我的用户尝试下载文件时，都会收到EPIPE错误。这不会发生在我的本地设置上（除了代理服务器之外与服务器相同），所以我认为它与我的Nginx配置有关。

以下是我的Nginx配置：

/etc/nginx/nginx.conf

user                    www www;
worker_processes        1;
error_log               /home/alex/logs/error.log;
pid                     /var/run/nginx.pid;
worker_rlimit_nofile    8192;

events {
    worker_connections  4096;  ## Default: 1024
}

http {
    include         mime.types;
    index           index.html index.htm index.php;
    default_type    application/octet-stream;
    log_format      main '$remote_addr - $remote_user [$time_local]  $status '
                         '"$request" $body_bytes_sent "$http_referer" '
                         '"$http_user_agent" "$http_x_forwarded_for"';
    access_log      /home/alex/logs/access.log  main;
    sendfile        on;
    tcp_nopush      on;
    gzip            on;

    server_names_hash_bucket_size 128; # this seems to be required for some vhosts

    include /etc/nginx/conf.d/*.conf;
}

/etc/nginx/conf.d/default.conf

server {
    listen       80;
    server_name  example.com;

    # log access and stuff
    access_log  /home/alex/logs/example-site.log  main;

    # Load configuration files for the default server block.
    include /etc/nginx/default.d/*.conf;

    # Proxy to the NodeJS server
    location / {
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_pass http://127.0.0.1:8999;
    }

    # redirect server error pages to their HTML
    include /etc/nginx/errpages.conf;
}

ExpressJS服务器使用以下代码发送下载：

app.get('/citrite/p/:patch', function(req, res)
{
    if(set.citFiles.indexOf(req.params.patch) == -1)
    {
        res.send(mbuild.get404());
    }
    else
    {
        track.incrViewcount(req.params.patch, 'citrite');
        res.download(set.citDir + '/' + req.params.patch, files.doneSaving);
    }
});

该代码和其他所有内容在我的本地git仓库中工作正常，但是当我从那里推出并拉动服务器端时，该站点会发出尖叫声 - 它会在用户结束时超时并给我控制台中出现EPIPE错误。我正在运行Node.js版本4.2.1和ExpressJS版本4.13.3。

Answer 1

我弄清楚问题是什么：显然，将 private void Page_Loaded(object sender, RoutedEventArgs e) { myModelView = new MyModelView(); this.DataContext = myModelView; } 设置为sendfile是导致下载停顿的原因，并将其关闭（具体来说，删除配置中的指令）已修复问题。不完全确定为什么会干扰，但摆脱设置可以解决问题。