Play Framework 无法连接到 WS

Posted 2023-04-01

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【中文标题】Play Framework 无法连接到 WS【英文标题】：Play Framework can't connect to WS 【发布时间】：2016-04-15 12:52:18 【问题描述】：

我正在尝试为我的 Play 应用程序提供 WebSocket 连接，但是即使使用示例代码我也遇到了问题。使用 websocket 回显页面，我尝试发送数据。但是，我什至无法连接。

我有一个控制器，我有样品public WebSocket<String> socket() 在我的路线文件中，我有 GET /socket @controllers.Application.socket()

使用 URL 时：ws://localhost:9001/socket 没有任何反应使用 wss://localhost:9001/socket 时，我得到没有真实信息的网络错误。

[error] p.c.s.n.PlayDefaultUpstreamHandler - Exception caught in Netty
java.lang.IllegalArgumentException: invalid version format: ???  ?+?/???????
    at org.jboss.netty.handler.codec.http.HttpVersion.<init>(HttpVersion.java:94) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpVersion.valueOf(HttpVersion.java:62) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpRequestDecoder.createMessage(HttpRequestDecoder.java:75) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:102) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559) [netty-3.10.3.Final.jar:na]
[error] p.c.s.n.PlayDefaultUpstreamHandler - Exception caught in Netty
java.lang.IllegalArgumentException: invalid version format: ???  ?+?/???????
    at org.jboss.netty.handler.codec.http.HttpVersion.<init>(HttpVersion.java:94) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpVersion.valueOf(HttpVersion.java:62) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpRequestDecoder.createMessage(HttpRequestDecoder.java:75) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:102) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.cleanup(ReplayingDecoder.java:554) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.frame.FrameDecoder.channelDisconnected(FrameDecoder.java:365) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:102) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.10.3.Final.jar:na]
[error] p.c.s.n.PlayDefaultUpstreamHandler - Exception caught in Netty
java.lang.IllegalArgumentException: invalid version format: Z#  "?+?/ ????????
    at org.jboss.netty.handler.codec.http.HttpVersion.<init>(HttpVersion.java:94) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpVersion.valueOf(HttpVersion.java:62) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpRequestDecoder.createMessage(HttpRequestDecoder.java:75) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:102) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559) [netty-3.10.3.Final.jar:na]
[error] p.c.s.n.PlayDefaultUpstreamHandler - Exception caught in Netty
java.lang.IllegalArgumentException: invalid version format: Z#  "?+?/ ????????
    at org.jboss.netty.handler.codec.http.HttpVersion.<init>(HttpVersion.java:94) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpVersion.valueOf(HttpVersion.java:62) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpRequestDecoder.createMessage(HttpRequestDecoder.java:75) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:102) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.cleanup(ReplayingDecoder.java:554) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.frame.FrameDecoder.channelDisconnected(FrameDecoder.java:365) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:102) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.10.3.Final.jar:na]
[error] p.c.s.n.PlayDefaultUpstreamHandler - Exception caught in Netty
java.lang.IllegalArgumentException: empty text
    at org.jboss.netty.handler.codec.http.HttpVersion.<init>(HttpVersion.java:89) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpVersion.valueOf(HttpVersion.java:62) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpRequestDecoder.createMessage(HttpRequestDecoder.java:75) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:102) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559) [netty-3.10.3.Final.jar:na]
[error] p.c.s.n.PlayDefaultUpstreamHandler - Exception caught in Netty
java.lang.IllegalArgumentException: empty text
    at org.jboss.netty.handler.codec.http.HttpVersion.<init>(HttpVersion.java:89) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpVersion.valueOf(HttpVersion.java:62) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpRequestDecoder.createMessage(HttpRequestDecoder.java:75) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:102) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.cleanup(ReplayingDecoder.java:554) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.frame.FrameDecoder.channelDisconnected(FrameDecoder.java:365) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:102) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.10.3.Final.jar:na]
[error] p.c.s.n.PlayDefaultUpstreamHandler - Exception caught in Netty
java.lang.IllegalArgumentException: empty text
    at org.jboss.netty.handler.codec.http.HttpVersion.<init>(HttpVersion.java:89) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpVersion.valueOf(HttpVersion.java:62) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpRequestDecoder.createMessage(HttpRequestDecoder.java:75) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:102) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559) [netty-3.10.3.Final.jar:na]
[error] p.c.s.n.PlayDefaultUpstreamHandler - Exception caught in Netty
java.lang.IllegalArgumentException: empty text
    at org.jboss.netty.handler.codec.http.HttpVersion.<init>(HttpVersion.java:89) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpVersion.valueOf(HttpVersion.java:62) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpRequestDecoder.createMessage(HttpRequestDecoder.java:75) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:102) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.replay.ReplayingDecoder.cleanup(ReplayingDecoder.java:554) ~[netty-3.10.3.Final.jar:na]
    at org.jboss.netty.handler.codec.frame.FrameDecoder.channelDisconnected(FrameDecoder.java:365) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:102) [netty-3.10.3.Final.jar:na]
    at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.10.3.Final.jar:na]

很遗憾，我不知道该怎么办。如果需要，我可以提供更多代码，这是 Play 文档页面中的示例代码。

【问题讨论】：

【参考方案1】：

问题是因为我在 HTTPS 中使用了 echo 测试。一旦我将其更改为 HTTP，一切正常。

【讨论】：

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