我有一个带有嵌入式 jetty 的 Spring Boot 2.0.0 RC2,我想启用 HTTP/2。
根据 docs on how to enable http/2 for jetty我将 server.http2.enabled=true
添加到我的 apllication.properties
我的 pom.xml
看起来像这样:
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.RC2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<!-- Exclude the Tomcat dependency -->
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- Use Jetty instead -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jetty</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.eclipse.jetty/jetty-alpn-conscrypt-server -->
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-alpn-conscrypt-server</artifactId>
<version>9.4.8.v20171121</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.eclipse.jetty.http2/http2-server -->
<dependency>
<groupId>org.eclipse.jetty.http2</groupId>
<artifactId>http2-server</artifactId>
<version>9.4.8.v20171121</version>
</dependency>
</dependencies>
然后我启动它并执行一些 GET 请求(第一个是 HTTP1,第二个是 HTTP2)。这是输出:
2018-02-26 18:24:59.670 INFO 20338 --- [ main] o.s.b.web.embedded.jetty.JettyWebServer : Jetty started on port(s) 8080 (http/1.1) with context path '/'
2018-02-26 18:24:59.674 INFO 20338 --- [ main] ru.example.vpndemo.VpnDemoApplication : Started VpnDemoApplication in 4.772 seconds (JVM running for 5.45)
127.0.0.1 - - [26/Feb/2018:15:25:11 +0000] "GET /example/ HTTP/1.1" 200 13
127.0.0.1 - - [26/Feb/2018:15:33:52 +0000] "PRI * HTTP/2.0" 426 0
为什么我的第二个请求在控制台中打印为 PRI
?
这是 HTTP1 请求的 cURL 输出:
$ curl http://localhost:8080/example/ -v
* Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 8080 (#0)
> GET /example/ HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.58.0
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Mon, 26 Feb 2018 15:37:03 GMT
< Content-Type: text/plain;charset=utf-8
< Content-Length: 13
<
* Connection #0 to host localhost left intact
Hello Spring!
这里是 HTTP2 的输出:
$ curl --http2-prior-knowledge http://localhost:8080/example/ -v
* Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 8080 (#0)
* Using HTTP2, server supports multi-use
* Connection state changed (HTTP/2 confirmed)
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* Using Stream ID: 1 (easy handle 0x1ac3f90)
> GET /example/ HTTP/2
> Host: localhost:8080
> User-Agent: curl/7.58.0
> Accept: */*
>
* Connection #0 to host localhost left intact
curl: (16) Error in the HTTP2 framing layer
看起来 HTTP2 仍未启用。如果是这样,我如何为 Jetty 启用它(我知道,它可以很容易地为 Tomcat 或 Undertow 启用)。
如果它已经启用,那么我做错了什么以获得所需的输出?
有什么想法吗?
提前致谢!
UPD
为了确保我的 cURL 与 HTTP2 一起正常工作,我使用 Undertow HTTP2 启动了应用程序。这是输出:
$ curl --http2-prior-knowledge http://localhost:8080/example/ -v
* Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 8080 (#0)
* Using HTTP2, server supports multi-use
* Connection state changed (HTTP/2 confirmed)
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* Using Stream ID: 1 (easy handle 0x2582f90)
> GET /example/ HTTP/2
> Host: localhost:8080
> User-Agent: curl/7.58.0
> Accept: */*
>
* Connection state changed (MAX_CONCURRENT_STREAMS updated)!
< HTTP/2 200
< content-type: text/plain;charset=UTF-8
< content-length: 13
< date: Mon, 26 Feb 2018 14:31:06 GMT
<
* Connection #0 to host localhost left intact
Hello Spring!
最佳答案
顺序...
PRI * HTTP/2.0
SM
看起来像 "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
是“HTTP/2 连接前言”
参见:https://www.rfc-editor.org/rfc/rfc7540#section-3.5
In HTTP/2, each endpoint is required to send a connection preface as
a final confirmation of the protocol in use and to establish the
initial settings for the HTTP/2 connection. The client and server
each send a different connection preface.
关于java - 在 Jetty 上为 Spring Boot 启用 HTTP/2,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/48992061/