一个数据包可以包含几个Websocket吗？

我正在用Wireshark检查我的服务器和浏览器之间的websocket流量，这时我注意到这种帧：

No.     Time           Source          Destination   Protocol  Length Info
 144342 8212.033150000 127.0.0.1       127.0.0.1     WebSocket 821    WebSocket Text [FIN] 

Frame 144342: 821 bytes on wire (6568 bits), 821 bytes captured (6568 bits) on interface 0
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 (127.0.0.1)
Transmission Control Protocol, Src Port: http-alt (8080), Dst Port: 53749 (53749), Seq: 1132, Ack: 603, Len: 755
WebSocket
    1... .... = Fin: True
    .000 .... = Reserved: 0x00
    .... 0001 = Opcode: Text (1)
    0... .... = Mask: False
    .111 1110 = Payload length: 126 Extended Payload Length (16 bits)
    Extended Payload length (16 bits): 140
    Payload
        Text: {"type":"COLLABORATIVE_COMMANDS","remoteUser":"null","key":"1c78c08f-5d2d-445a-a63c-3a211d2f0336","messageBroadcast":{"smartPath":["null"]}}
WebSocket
    1... .... = Fin: True
    .000 .... = Reserved: 0x00
    .... 0001 = Opcode: Text (1)
    0... .... = Mask: False
    .111 1110 = Payload length: 126 Extended Payload Length (16 bits)
    Extended Payload length (16 bits): 329
    Payload
        Text [truncated]: {"type":"COLLABORATIVE_COMMANDS","remoteUser":"","key":"1c78c08f-5d2d-445a-a63c-3a211d2f0336","messageBroadcast":{"cameraInfos":{"target":{"x":0,"y":0,"z":0},"camPos":{"x":557.0133301398326,"y":159.5460628202445,"z":342.4
WebSocket
    1... .... = Fin: True
    .000 .... = Reserved: 0x00
    .... 0001 = Opcode: Text (1)
    0... .... = Mask: False
    .111 1110 = Payload length: 126 Extended Payload Length (16 bits)
    Extended Payload length (16 bits): 141
    Payload
        Text: {"type":"COLLABORATIVE_COMMANDS","remoteUser":"","key":"1c78c08f-5d2d-445a-a63c-3a211d2f0336","messageBroadcast":{"colourEditedMeshes":true}}
WebSocket
    1... .... = Fin: True
    .000 .... = Reserved: 0x00
    .... 0001 = Opcode: Text (1)
    0... .... = Mask: False
    .111 1110 = Payload length: 126 Extended Payload Length (16 bits)
    Extended Payload length (16 bits): 129
    Payload
        Text: {"type":"COLLABORATIVE_COMMANDS","remoteUser":"","key":"1c78c08f-5d2d-445a-a63c-3a211d2f0336","messageBroadcast":{"explode":"0"}}

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这是否意味着我的包中有几个WebSocket？这是怎么可能的？

如果您阅读WebSocket规范，您将看到WebSocket数据包是框架式的，其中每个框架都有自己的头和负载。请记住，TCP是一种流式传输。发送方和接收方没有关注TCP帧，而是关注这些帧中的有效负载。WebSocket发送器将发送一个WebSocket标头，后跟其有效负载，再后跟下一个WebSocket标头及其有效负载，依此类推。WebSocket接收器将读取WebSocket标头及其有效负载，然后读取下一个WebSocket标头及其有效负载，依此类推。通常，在TCP套接字上启用，它将根据需要将应用程序数据拆分并组合到TCP帧中，以实现高效的网络传输。这是由对应用程序透明的TCP堆栈处理的。所以是的，如果Nagle是这样决定传输的，那么可以看到多个WebSocket帧出现在一个TCP帧中。如果WebSocket数据包在短时间内发送，Nagle可能会合并它们，因此它只需发送单个TCP帧，而不必发送单独的TCP帧。

非常感谢您提供这些详细的解释。