线上http400，postman正常

Posted 2022-02-11 root_zhb

1、问题描述

近期对接国脉，升级sdk包之后，出现问题：环境上部分链接显示http400，但是使用postman进行测试一切正常。

2、问题排查

1. 首先查看问题链接的共同点，发现有问题的链接都配置了单点登录，也即Cookie中都包含了TGC
2. 排查单点的配置不存在问题，考虑把cookie放到header中进行测试
   
3. 错误复现http400，生产环境日志如下

java.lang.IllegalArgumentException: Request header is too large
	at org.apache.coyote.http11.Http11InputBuffer.fill(Http11InputBuffer.java:718)
	at org.apache.coyote.http11.Http11InputBuffer.parseHeader(Http11InputBuffer.java:865)
	at org.apache.coyote.http11.Http11InputBuffer.parseHeaders(Http11InputBuffer.java:563)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:311)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:813)

4. 基本可以确定问题了，sdk对请求头的大小做了限制

3、解决

springboot的yml文件中添加配置

server:
  port: 7030
  maxHttpHeaderSize: 102400