https://bz.apache.org/bugzilla/show_bug.cgi?id=60523

            Bug ID: 60523
           Summary: Reduce number of network packets that server sends to
                    client via WebSocket connection
           Product: Tomcat 9
           Version: 9.0.0.M15
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: WebSocket
          Assignee: dev@tomcat.apache.org
          Reporter: iv_koval...@mail.ru
  Target Milestone: -----

Created attachment 34559
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=34559&action=edit
Patch for WsRemoteEndpointImplBase.java

I am using Tomcat 9 and Spring.

My web application has a websocket service.

My application sends binary messages to client using sendMessage of:

org.springframework.web.socket.WebSocketSession.

I collected tcp packets by wireshark. I see that every binary websocket message
uses at least 2 TCP packets.

The first packet is the header, it is small.

There is patch for WsRemoteEndpointImplBase.java from version 9.0.0.M15 in
attachement, it
creates one packet from header and tail if it's size not more than 65536 bytes.

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