java.io.IOException: end of stream when reading header 异常 #238

场景：

2020-06-28 12:36:19.240 ERROR 32 — [ main] c.l.p.canal.controller.CanalListence :canal连接失败：java.io.IOException: end of stream when reading header
com.alibaba.otter.canal.protocol.exception.CanalClientException: java.io.IOException: end of stream when reading header
at com.alibaba.otter.canal.client.impl.SimpleCanalConnector.doConnect(SimpleCanalConnector.java:178) ~[canal.client-1.0.25.jar:na]
at com.alibaba.otter.canal.client.impl.SimpleCanalConnector.connect(SimpleCanalConnector.java:102) ~[canal.client-1.0.25.jar:na]
at com.landi.pumper.canal.controller.CanalListence.run(CanalListence.java:111) ~[pumper-canal-1.0.1.jar:na]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:813) [spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:797) [spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:324) [spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at com.landi.pumper.canal.CanalApplication.main(CanalApplication.java:12) [pumper-canal-1.0.1.jar:na]
Caused by: java.io.IOException: end of stream when reading header
at com.alibaba.otter.canal.client.impl.SimpleCanalConnector.read(SimpleCanalConnector.java:401) ~[canal.client-1.0.25.jar:na]
at com.alibaba.otter.canal.client.impl.SimpleCanalConnector.readNextPacket(SimpleCanalConnector.java:389) ~[canal.client-1.0.25.jar:na]
at com.alibaba.otter.canal.client.impl.SimpleCanalConnector.readNextPacket(SimpleCanalConnector.java:373) ~[canal.client-1.0.25.jar:na]
at com.alibaba.otter.canal.client.impl.SimpleCanalConnector.doConnect(SimpleCanalConnector.java:140) ~[canal.client-1.0.25.jar:na]
… 8 common frames omitted

canal就连不上了，一直报错：原因端口变更配置文件（canal.properties）未改

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