Spring 集成 tcp/ip 连接延迟

Question

我们正在使用 Spring 集成 4.1.3.

有时从特定服务器请求连接需要超过 5 秒。

step1 和 step2 之间发生了什么？

为什么延迟了？

客户端日志

step1 :▶ DEBUG 11.28 18:14:33.237  [ajp-bio-8109-exec-3] org.springframework.integration.ip.tcp.connection.TcpNetClientConnectionFactory[obtainNewConnection:98] - Opening new socket connection to 10.0.12.111:36401
step2 :▶ DEBUG 11.28 18:14:38.306  [ajp-bio-8109-exec-3] org.springframework.integration.ip.tcp.connection.TcpNetConnection[<init>:138] - New connection 10.0.12.111:36401:2701:561f3524-c421-45ba-9ea5-76a7ddf96430

客户端配置

<int:gateway id="gw-vacct-tcp-sender"
             service-interface="com.mainpay.pay.service.TcpSendVacctGateway"
             default-request-channel="vacct-input"
             default-reply-channel="vacct-reply"
             />

<int-tcp:tcp-connection-factory id="vacct-client"
                                type="client"
                                host="#{springSetting['pay.pg.ngin.vip']}"
                                port="#{springSetting['pay.pg.ngin.vacct.port']}"
                                serializer="TCPJsonSerializer8"
                                deserializer="TCPJsonDeserializer8"
                                single-use="true" 
                                so-timeout="20000"      

/>      

<int:channel id="vacct-input" />

<int-tcp:tcp-outbound-gateway id="vacct-outGateway" 
                              request-channel="vacct-input"
                              reply-channel="vacct-reply" 
                              connection-factory="vacct-client"  
                              reply-timeout="20000"
                              />

<int:channel id="vacct-reply" datatype="java.lang.String" />

Answer 1

尝试将 lookup-host 设置为 false；也许网络中存在反向主机查找问题。看起来查找失败，因为它是连接 ID 中的 IP 地址。

10.0.12.111:36401:2701:561f3524-c421-45ba-9ea5-76a7ddf96430

参见 the documentation。

By default, reverse DNS lookups are done on inbound packets to convert IP addresses to hostnames for use in message headers. In environments where DNS is not configured, this can cause connection delays. You can override this default behavior by setting the lookup-host attribute to false.

Spring 集成 tcp/ip 连接延迟

Spring Integration tcp/ip connection delay

java

spring

spring-integration

tcp-ip