无法使用 react-native-xmpp 连接到 Ejabberd 服务器

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【中文标题】无法使用 react-native-xmpp 连接到 Ejabberd 服务器【英文标题】：Failing to Connect to Ejabberd Server using react-native-xmpp 【发布时间】：2020-08-21 09:53:04 【问题描述】：

我正在尝试使用 react-native-xmpp 和 Ejabberd 创建一个基本的聊天应用程序，但我遇到了证书错误。这是完整的控制台输出：

Pressed
[Fri Aug 21 2020 04:40:01.140]  LOG      react-native-xmpp: Message: "Testing..." being sent to user: user@ec2-3-14-27-95.us-east-2.compute.amazonaws.com

[Fri Aug 21 2020 04:40:01.360]  LOG      react-native-xmpp: Error: java.security.cert.CertificateException: Hostname verification of certificate failed. Certificate does not authenticate ec2-3-14-27-95.us-east-2.compute.amazonaws.com

[Fri Aug 21 2020 04:40:01.366]  LOG      react-native-xmpp: Disconnected, error: Hostname verification of certificate failed. Certificate does not authenticate ec2-3-14-27-95.us-east-2.compute.amazonaws.com

我可以登录到 Ejabberd 网络管理面板没有问题，服务器启动也没有问题，但它似乎不喜欢接受 XMPP 连接。这是我的客户端代码：

var XMPP = require('react-native-xmpp');

class App extends Component 

  test() 
    console.log('Pressed');
    var user = 'admin@ec2-3-14-27-95.us-east-2.compute.amazonaws.com';
    var password = 'password';

    var to = 'user@ec2-3-14-27-95.us-east-2.compute.amazonaws.com';

    XMPP.trustHosts(['ec2-3-14-27-95.us-east-2.compute.amazonaws.com']);
    XMPP.connect(user, password);
    XMPP.message('Testing...', to);
  

  render() 
    return (
      <View style=styles.center>
        <Button title="Button" onPress=this.test />
      </View>
    );

代码很糟糕，但现在我只想确保我可以建立和维护连接。

编辑：

来自 Gajim 的错误对话框：

来自 Gajim 的证书详细信息：

ejabberd.yml:

###
###'           ejabberd configuration file
###
### The parameters used in this configuration file are explained at
###
###       https://docs.ejabberd.im/admin/configuration
###
### The configuration file is written in YAML.
### *******************************************************
### *******           !!! WARNING !!!               *******
### *******     YAML IS INDENTATION SENSITIVE       *******
### ******* MAKE SURE YOU INDENT SECTIONS CORRECTLY *******
### *******************************************************
### Refer to http://en.wikipedia.org/wiki/YAML for the brief description.
###

hosts:
  - "ec2-3-14-27-95.us-east-2.compute.amazonaws.com"

loglevel: 4
log_rotate_size: 10485760
log_rotate_date: ""
log_rotate_count: 1
log_rate_limit: 100

certfiles:
  - "/opt/ejabberd/conf/server.pem"
##  - "/etc/letsencrypt/live/localhost/fullchain.pem"
##  - "/etc/letsencrypt/live/localhost/privkey.pem"

ca_file: "/opt/ejabberd/conf/cacert.pem"

listen:
  -
    port: 5222
    ip: "::"
    module: ejabberd_c2s
    max_stanza_size: 262144
    shaper: c2s_shaper
    access: c2s
    starttls_required: true
  -
    port: 5269
    ip: "::"
    module: ejabberd_s2s_in
    max_stanza_size: 524288
  -
    port: 5443
    ip: "::"
    module: ejabberd_http
    tls: true
    request_handlers:
      "/admin": ejabberd_web_admin
      "/api": mod_http_api
      "/bosh": mod_bosh
      "/captcha": ejabberd_captcha
      "/upload": mod_http_upload
      "/ws": ejabberd_http_ws
      "/oauth": ejabberd_oauth
  -
    port: 5280
    ip: "::"
    module: ejabberd_http
    request_handlers:
      "/admin": ejabberd_web_admin
  -
    port: 1883
    ip: "::"
    module: mod_mqtt
    backlog: 1000

s2s_use_starttls: optional

acl:
  local:
    user_regexp: ""
  loopback:
    ip:
      - 127.0.0.0/8
      - ::1/128
      - ::FFFF:127.0.0.1/128
  admin:
    user:
      - "admin@ec2-3-14-27-95.us-east-2.compute.amazonaws.com"

access_rules:
  local:
    allow: local
  c2s:
    deny: blocked
    allow: all
  announce:
    allow: admin
  configure:
    allow: admin
  muc_create:
    allow: local
  pubsub_createnode:
    allow: local
  trusted_network:
    allow: loopback

api_permissions:
  "console commands":
    from:
      - ejabberd_ctl
    who: all
    what: "*"
  "admin access":
    who:
      access:
        allow:
          acl: loopback
          acl: admin
      oauth:
        scope: "ejabberd:admin"
        access:
          allow:
            acl: loopback
            acl: admin
    what:
      - "*"
      - "!stop"
      - "!start"
  "public commands":
    who:
      ip: 127.0.0.1/8
    what:
      - status
      - connected_users_number

shaper:
  normal: 1000
  fast: 50000

shaper_rules:
  max_user_sessions: 10
  max_user_offline_messages:
    5000: admin
    100: all
  c2s_shaper:
    none: admin
    normal: all
  s2s_shaper: fast

max_fsm_queue: 10000

acme:
   contact: "mailto:admin@ec2-3-14-27-95.us-east-2.compute.amazonaws.com"
   ca_url: "https://acme-v01.api.letsencrypt.org"

modules:
  mod_adhoc: 
  mod_admin_extra: 
  mod_announce:
    access: announce
  mod_avatar: 
  mod_blocking: 
  mod_bosh: 
  mod_caps: 
  mod_carboncopy: 
  mod_client_state: 
  mod_configure: 
  mod_disco: 
  mod_fail2ban: 
  mod_http_api: 
  mod_http_upload:
    put_url: https://@HOST@:5443/upload
  mod_last: 
  mod_mam:
    ## Mnesia is limited to 2GB, better to use an SQL backend
    ## For small servers SQLite is a good fit and is very easy
    ## to configure. Uncomment this when you have SQL configured:
    ## db_type: sql
    assume_mam_usage: true
    default: never
  mod_mqtt: 
  mod_muc:
    access:
      - allow
    access_admin:
      - allow: admin
    access_create: muc_create
    access_persistent: muc_create
    access_mam:
      - allow
    default_room_options:
      allow_subscription: true  # enable MucSub
      mam: false
  mod_muc_admin: 
  mod_offline:
    access_max_user_messages: max_user_offline_messages
  mod_ping: 
  mod_privacy: 
  mod_private: 
  mod_proxy65:
    access: local
    max_connections: 5
  mod_pubsub:
    access_createnode: pubsub_createnode
    plugins:
      - flat
      - pep
    force_node_config:
      ## Avoid buggy clients to make their bookmarks public
      storage:bookmarks:
        access_model: whitelist
  mod_push: 
  mod_push_keepalive: 
  mod_register:
    ## Only accept registration requests from the "trusted"
    ## network (see access_rules section above).
    ## Think twice before enabling registration from any
    ## address. See the Jabber SPAM Manifesto for details:
    ## https://github.com/ge0rg/jabber-spam-fighting-manifesto
    ip_access: trusted_network
  mod_roster:
    versioning: true
  mod_s2s_dialback: 
  mod_shared_roster: 
  mod_stream_mgmt:
    resend_on_timeout: if_offline
  mod_vcard: 
  mod_vcard_xupdate: 
  mod_version:
    show_os: false

### Local Variables:
### mode: yaml
### End:
### vim: set filetype=yaml tabstop=8

【问题讨论】：

【参考方案1】：

您仍在使用 ejabberd 安装程序提供的示例证书。它是自签名的，没有有效性，因此错误消息是可以预料的。

如果您希望该错误消失，请不要使用加密，或者更好：获取由证书颁发机构签署的证书。

【讨论】：

啊，谢谢！我在服务器上禁用了加密，并且我还必须在客户端上手动禁用加密：***.com/questions/49429661/…。我的问题现在已经解决了。【参考方案2】：

我可以登录 Ejabberd 网络管理面板没问题

使用 HTTP 还是 HTTPS？检查您的网络浏览器是否报告有关证书的任何问题或疑问。

但它似乎不喜欢接受 XMPP 连接。

好吧，据我了解，您的客户似乎拒绝了 ejabberd 提供的证书，因为证书声明的主机与它所服务的主机不匹配。

您可以尝试使用知名的 Jabber/XMPP 客户端登录，例如 Gajim 或 Psi。也许这些测试可以让您更清楚地了解这个问题。

【讨论】：

我正在使用 HTTP。我想这可以解释缺乏安全错误。我安装了 Gajim，但我也遇到了证书错误。我将更新问题以包括 Gajim 告诉我的内容。

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