AWS Application Load Balancer上的Websocket + SSL

Question

我在ElastickBeanstalk上部署了一个Django应用程序。我最近从Classic - > Application迁移了负载均衡器，以支持Websocket（由以下部分组成的层：Django-channels（〜= 1.1.8，channels-api == 0.4.0），Redis Elasticache AWS和Daphne（〜= 1.4））。 HTTP，HTTPS和Web Socket协议工作正常。

但我找不到通过安全SSL部署Websocket的方法。它正在扼杀我，并且它正在阻止，因为来自浏览器的HTTPS连接将切断非安全的ws：//对等请求。

这是我的ALB配置有人作为解决方案吗？

Answer 1

我也一直在使用SSL，EBS和Channels 1.x苦苦挣扎，与你描述的场景完全相同，但最后我可以部署我的应用程序。 SSL始终是问题，因为Django在routing.py文件中忽略了我的所有SSL请求的路由，并且在此之前一切正常。

我决定将所有的websockets请求发送到服务器中的唯一根路径，比如/ws/*。然后向负载均衡器添加一个特定规则，该负载均衡器通过端口443接收所有这些请求，并将它们重定向到端口5000（Daphne工作者正在侦听）作为HTTP请求（而不是HTTPS！）。在负载均衡器背后的假设下，VPC足够安全。请注意，此配置可能涉及其他项目的安全问题。

现在我的负载均衡器配置看起来像这个

...因为来自浏览器的HTTPS连接将切断非安全的ws：//对等请求。

还有一件事。您应该使用wss://通过HTTPS启动websocket连接。你可以在你的.js文件中写这样的东西。

var wsScheme = window.location.protocol.includes('https') ? 'wss' : 'ws';
var wsPath = wsScheme + '://' + window.location.host + '/your/ws/path';
var ws = new ReconnectingWebSocket(wsPath);

祝好运！

Answer 2

经过2天的调查，我终于破解了这个配置！

这是答案：

1. 右边和MINIMUM，aws - ALB配置：确实，我们需要 解码SSL（这不是端到端加密） 转发所有到Daphne的交通。之所以我没有在网络中传播：“/ ws / *”路由到Daphne，是因为它确实为我提供了HandShake OK，但之后，没有什么，nada，websocket无法推回到订户。我相信，原因是Daphne的推回不尊重您在conf中自定义的自定义基本跟踪URL。另外，我无法确定这种解释。但我确定的是，如果我不将所有流量转发给达芙妮，那么握手后它就无法工作。 最低部署CONF 在部署中不需要complet .ebextension覆盖代理：

.ebextensions / 05_channels.config

files:
  "/opt/elasticbeanstalk/hooks/appdeploy/post/start_supervisor.sh":
  mode: "000755"
  owner: root
  group: root
  content: |
    #!/usr/bin/env bash
    sudo virtualenv -p /usr/bin/python2.7 /tmp/senv
    source /tmp/senv/bin/activate && source /opt/python/current/env
    sudo python --version > /tmp/version_check.txt
    sudo pip install supervisor

    sudo /usr/local/bin/supervisord -c /opt/python/current/app/fxf/custom_eb_deployment/supervisord.conf
    sudo /usr/local/bin/supervisorctl -c /opt/python/current/app/fxf/custom_eb_deployment/supervisord.conf reread
    sudo /usr/local/bin/supervisorctl -c /opt/python/current/app/fxf/custom_eb_deployment/supervisord.conf update
    sudo /usr/local/bin/supervisorctl -c /opt/python/current/app/fxf/custom_eb_deployment/supervisord.conf restart all
    sudo /usr/local/bin/supervisorctl -c /opt/python/current/app/fxf/custom_eb_deployment/supervisord.conf status

• start_daphne.sh（备注我根据我的ALB conf选择8001端口）

  #!/usr/bin/env bash
  source /opt/python/run/venv/bin/activate && source /opt/python/current/env
  /opt/python/run/venv/bin/daphne -b 0.0.0.0 -p 8001 fxf.asgi:channel_layer

• start_worker.sh

  #!/usr/bin/env bash
  source /opt/python/run/venv/bin/activate && source /opt/python/current/env
  python /opt/python/current/app/fxf/manage.py runworker

• supervisord.conf

`

[unix_http_server]
file=/tmp/supervisor.sock   ; (the path to the socket file)

[supervisord]
logfile=/tmp/supervisord.log ; supervisord log file
loglevel=error ; info, debug, warn, trace
logfile_maxbytes=50MB        ; (max main logfile bytes b4 rotation;default 50MB)
logfile_backups=10           ; (num of main logfile rotation backups;default 10)
pidfile=/tmp/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
nodaemon=false               ; (start in foreground if true;default false)
minfds=1024                  ; (min. avail startup file descriptors;default 1024)
minprocs=200                 ; (min. avail process descriptors;default 200)

; the below section must remain in the config file for RPC
; (supervisorctl/web interface) to work, additional interfaces may be
; added by defining them in separate rpcinterface: sections
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface

[supervisorctl]
serverurl=unix:///tmp/supervisor.sock ; use a unix:// URL  for a unix socket

[program:Daphne]
environment=PATH="/opt/python/run/venv/bin"
command=sh /opt/python/current/app/fxf/custom_eb_deployment/start_daphne.sh --log-file /tmp/start_daphne.log
directory=/opt/python/current/app
autostart=true
autorestart=true
redirect_stderr=true
stdout_logfile=/tmp/daphne.out.log
stderr_logfile=/tmp/daphne.err.log

[program:Worker]
environment=PATH="/opt/python/run/venv/bin"
command=sh /opt/python/current/app/fxf/custom_eb_deployment/start_worker.sh --log-file /tmp/start_worker.log
directory=/opt/python/current/app
process_name=%(program_name)s_%(process_num)02d
numprocs=2
autostart=true
autorestart=true
redirect_stderr=true
stdout_logfile=/tmp/workers.out.log
stderr_logfile=/tmp/workers.err.log

; When resorting to send SIGKILL to the program to terminate it
; send SIGKILL to its whole process group instead,
; taking care of its children as well.
killasgroup=true

`

如果有些人仍在努力解决这个问题，我可能会发布一个关于中等或其他东西的教程。不要犹豫，把它推给我答案;）

Answer 3

你应该使用wss：//而不是ws：//。并更改有关代理的设置。我刚刚添加了我的wsgi.conf。

<VirtualHost *:80>

WSGIPassAuthorization On

WSGIScriptAlias / /opt/python/current/app/config/wsgi.py

RewriteEngine On
RewriteCond %{HTTP:X-Forwarded-Proto} =http
RewriteRule .* https://%{HTTP:Host}%{REQUEST_URI} [L,R=permanent]

LoadModule proxy_wstunnel_module /usr/lib/apache2/modules/mod_proxy_wstunnel.so

ProxyPreserveHost On
ProxyRequests Off

ProxyPass "/ws/chat" "ws://**your site**/ws/chat" Keepalive=On
ProxyPassReverse "/ws/chat" "ws://**your site**/ws/chat" Keepalive=On

<Directory /opt/python/current/app/>
  Require all granted
</Directory>

</VirtualHost>

然后它将给你200状态连接。 “/ ws / chat /”应替换为您的websocket网址。

在制作此文件之前，您应该检查您的daphne服务器是否已打开。问题我所经历的是djangoenv和daemon.config的worker。

首先，djangoenv应该在一条线上。这意味着没有换行。第二，如果你使用django channel v2，那么它不需要worker。所以擦掉它。

这是我的daemon.config（我使用8001端口。）：

files:
  "/opt/elasticbeanstalk/hooks/appdeploy/post/run_supervised_daemon.sh":
    mode: "000755"
    owner: root
    group: root
    content: |
      #!/usr/bin/env bash

      # Get django environment variables
      djangoenv=`cat /opt/python/current/env | tr '\n' ',' | sed 's/%/%%/g' | sed 's/export //g' | sed 's/$PATH/%(ENV_PATH)s/g' | sed 's/$PYTHONPATH//g' | sed 's/$LD_LIBRARY_PATH//g'`
      djangoenv=${djangoenv%?}

      # Create daemon configuraiton script
      daemonconf="[program:daphne]
      ; Set full path to channels program if using virtualenv
      command=/opt/python/run/venv/bin/daphne -b 0.0.0.0 -p 8001 config.asgi:application
      directory=/opt/python/current/app
      user=ec2-user
      numprocs=1
      stdout_logfile=/var/log/stdout_daphne.log
      stderr_logfile=/var/log/stderr_daphne.log
      autostart=true
      autorestart=true
      startsecs=10

      ; Need to wait for currently executing tasks to finish at shutdown.
      ; Increase this if you have very long running tasks.
      stopwaitsecs = 600

      ; When resorting to send SIGKILL to the program to terminate it
      ; send SIGKILL to its whole process group instead,
      ; taking care of its children as well.
      killasgroup=true

      ; if rabbitmq is supervised, set its priority higher
      ; so it starts first
      priority=998

      environment=$djangoenv"

      # Create the supervisord conf script
      echo "$daemonconf" | sudo tee /opt/python/etc/daemon.conf

      # Add configuration script to supervisord conf (if not there already)
      if ! grep -Fxq "[include]" /opt/python/etc/supervisord.conf
          then
          echo "[include]" | sudo tee -a /opt/python/etc/supervisord.conf
          echo "files: daemon.conf" | sudo tee -a /opt/python/etc/supervisord.conf
      fi

      # Reread the supervisord config
      sudo /usr/local/bin/supervisorctl -c /opt/python/etc/supervisord.conf reread

      # Update supervisord in cache without restarting all services
      sudo /usr/local/bin/supervisorctl -c /opt/python/etc/supervisord.conf update

      # Start/Restart processes through supervisord
      sudo /usr/local/bin/supervisorctl -c /opt/python/etc/supervisord.conf restart daphne

并仔细检查您的安全组alb到ec2。祝好运！