Wso2 ESB向客户端发出400 BadRequest

Question

  

客户端（第三方）系统正在向F5负载均衡器发送请求   来自F5的请求正在到达WSo2 ESB（4.8.1）。每天10％   交易失败，客户端出现 400错误的请求。每当   从客户端请求中窥探到正确，他们   收到400错误的请求，但wso2 ESB日志无法看到该请求。您能帮助解决以下问题吗？   非常感谢

headers :::
-----------

Method:: POST 
Accept: application/json 
Accept-Encoding: gzip,deflate 
Content-Type: application/json 
password: ***** 
username:***** 
Content-Length: 151 
Host: ********:*** 
Connection: Keep-Alive

Request ::
----------

HTTP / 1.1

{
    "payload": {
        "details": {
            "number": "1111111111"
        },
        "topupDetails": {
            "topupThreshHold": "10000",
            "user": "abc"
        }
    }
}




Response
--------

400 Bad request
X-Cnection: Close
Date: Sat, 01 Dec 2018 20:37:52 GMT
Server: WSO2-PassThrough-HTTP
Content-Length: 0