在使用AMF连接发送Flex消息时，获取不支持的AMF版本错误 [英] Getting Unsupported AMF version error while using AMF Connection to send flex message

问题描述

  ClientStatusException $ b $我试图使用AMF连接API发送AMF消息，但得到如下所示的错误。 b消息：不支持的AMF版本
  

为此，我正在使用blazeds-core-4.0.1.21287.jar

以下是我的代码。

  String url =https ：//10.222.73.251：9443 /的vSphere的客户端/＃; 
尝试{
 amfConnection.connect（url）; 
 System.out.println（amfConnection.getUrl（））; 
} catch（ClientStatusException cse）{
 System.out.println（Error connecting url：+ cse）; 
 return; 
 
 
 try {
 
 amfConnection.addHttpRequestHeader（Cookie，
6250CED9FBC7D5894B79973DEC1503A6）; 
 amfConnection.addHttpRequestHeader（Content-type，
application / x-amf）; 
 amfConnection.setAmfTrace（new AmfTrace（））; 
 //amfConnection.setObjectEncoding(3）; 
 System.out.println（amfConnection.getObjectEncoding（））; 
 
 CommandMessage cmsg = new CommandMessage（）; 
 cmsg.setOperation（CommandMessage.CLIENT_PING_OPERATION）; 
 cmsg.setMessageId（UUIDUtils.createUUID（））; 
 cmsg.setHeader（Message.FLEX_CLIENT_ID_HEADER，706E5399-D81A-11C8-11F7-BE5F1940632E）; 
 cmsg.setHeader（Message.ENDPOINT_HEADER，amf）; 
 AcknowledgeMes​​sage ack =（AcknowledgeMes​​sage）amfConnection.call（null，cmsg）; 
  

任何帮助表示赞赏。 ：）

解决方案

我有同样的问题。原因是服务器期望一个独立的AMF数据包。

请参阅 https://en.wikipedia.org/wiki/Action_Message_Format#AMF_self-contained_pa​​cket

意味着你需要在普通的AMF消息之前添加以下字节：

  byte [] header = 
 {0x00，0x03，//版本
 0x00，0x00，//要跟随的头部类型结构的数量（无）
 0x00，0x01，//消息类型的nr （一）
 0x00，0x04，// target-uri-length 
 0x6e，0x75，0x6c，0x6c，// target urinull
 0x00，0x04， //响应uri长度
 0x6e，0x75，0x6c，0x6c，//响应urinull
 
 ??，??，??，?? //正常消息的长度，32位
}; 
  

I am trying to send AMF message using AMF Connection API but getting following error as shown below.

ClientStatusException 
message: Unsupported AMF version

I am using blazeds-core-4.0.1.21287.jar for this purpose.

Following is my code.

String url = "https://10.222.73.251:9443/vsphere-client/#";
        try {
            amfConnection.connect(url);
            System.out.println(amfConnection.getUrl());
        } catch (ClientStatusException cse) {
            System.out.println("Error connecting url: " + cse);
            return;
        }

        try {

            amfConnection.addHttpRequestHeader("Cookie",
                    "6250CED9FBC7D5894B79973DEC1503A6");
            amfConnection.addHttpRequestHeader("Content-type",
                    "application/x-amf");
            amfConnection.setAmfTrace(new AmfTrace());
            //amfConnection.setObjectEncoding(3);
            System.out.println(amfConnection.getObjectEncoding());

            CommandMessage cmsg = new CommandMessage();
            cmsg.setOperation(CommandMessage.CLIENT_PING_OPERATION);
            cmsg.setMessageId(UUIDUtils.createUUID());
            cmsg.setHeader(Message.FLEX_CLIENT_ID_HEADER, "706E5399-D81A-11C8-11F7-BE5F1940632E");
            cmsg.setHeader(Message.ENDPOINT_HEADER, "amf");
            AcknowledgeMessage ack = (AcknowledgeMessage)amfConnection.call(null, cmsg);

Any help is appreciated. :)

解决方案

I had the same problem. The cause was that the server expected a "self-contained AMF packet".

See https://en.wikipedia.org/wiki/Action_Message_Format#AMF_self-contained_packet

This basically means that you need to add the following bytes in front of the "normal" AMF message:

  byte[] header = 
  { 0x00, 0x03,       // version 
    0x00, 0x00,       // nr of "header-type-structures" to follow (none) 
    0x00, 0x01,       // nr of "message-type-structures" to follow (one)
    0x00, 0x04,       // target-uri-length
    0x6e, 0x75, 0x6c, 0x6c, // target uri "null" 
    0x00, 0x04,       // response uri length 
    0x6e, 0x75, 0x6c, 0x6c, // response uri "null" 

    ??, ??, ??, ??    // the length of the "normal" message, 32 bits
  };

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