Question

我想在http / 2上为端口80运行一个wireshark到

scala> @transient val w = Window.partitionBy("x").orderBy("y")
w: org.apache.spark.sql.expressions.WindowSpec = org.apache.spark.sql.expressions.WindowSpec@7dda1470

scala> @transient val lag_y = lag(col("y"), 1).over(w)
lag_y: org.apache.spark.sql.Column = 'lag(y,1,null) windowspecdefinition(x,y ASC,UnspecifiedFrame)

scala> df.select(lag_y).map(f _).first
res1: String = [null]

是否有支持端口80的http / 2的网站？当我去谷歌时，总是将我改为https。

感谢，迪恩

Answer 1

Jetty项目实现了一个HTTP / 2服务器，可以使用加密的HTTP / 2和明文HTTP / 2。

您可以在本地轻松设置Jetty h2c服务器，支持直接HTTP / 2通信，并支持HTTP / 1.1升级到HTTP / 2。

我建议您不要用实验轰炸公共服务器：）

这是服务器代码：

public class H2C
{
    public static void main(String[] args) throws Exception
    {
        Server server = new Server();

        HttpConfiguration config = new HttpConfiguration();
        HttpConnectionFactory h1 = new HttpConnectionFactory(config);
        HTTP2CServerConnectionFactory h2 = new HTTP2CServerConnectionFactory(config);
        ServerConnector connector = new ServerConnector(server, h1, h2);
        connector.setPort(8080);
        server.addConnector(connector);

        server.setHandler(new AbstractHandler()
        {
            @Override
            protected void doHandle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
            {
                baseRequest.setHandled(true);
                // Your code here.
            }
        });

        server.start();
    }
}

您可以使用HTTP / 2客户端测试服务器，例如nghttp，并通过Wireshark观察流量。

通过升级测试明文HTTP / 2（使用-u标志，-v标志用于详细程度）：

$ nghttp -uv http://localhost:8080/

[  0.000] Connected
[  0.000] HTTP Upgrade request
GET / HTTP/1.1
host: localhost:8080
connection: Upgrade, HTTP2-Settings
upgrade: h2c
http2-settings: AAMAAABkAAQAAP__
accept: */*
user-agent: nghttp2/1.7.1


[  0.001] HTTP Upgrade response
HTTP/1.1 101 Switching Protocols


[  0.001] HTTP Upgrade success
[  0.001] send SETTINGS frame <length=12, flags=0x00, stream_id=0>
      (niv=2)
      [SETTINGS_MAX_CONCURRENT_STREAMS(0x03):100]
      [SETTINGS_INITIAL_WINDOW_SIZE(0x04):65535]
[  0.001] send PRIORITY frame <length=5, flags=0x00, stream_id=3>
      (dep_stream_id=0, weight=201, exclusive=0)
[  0.001] send PRIORITY frame <length=5, flags=0x00, stream_id=5>
      (dep_stream_id=0, weight=101, exclusive=0)
[  0.001] send PRIORITY frame <length=5, flags=0x00, stream_id=7>
      (dep_stream_id=0, weight=1, exclusive=0)
[  0.001] send PRIORITY frame <length=5, flags=0x00, stream_id=9>
      (dep_stream_id=7, weight=1, exclusive=0)
[  0.001] send PRIORITY frame <length=5, flags=0x00, stream_id=11>
      (dep_stream_id=3, weight=1, exclusive=0)
[  0.001] send PRIORITY frame <length=5, flags=0x00, stream_id=1>
      (dep_stream_id=11, weight=16, exclusive=0)
[  0.001] recv SETTINGS frame <length=12, flags=0x00, stream_id=0>
      (niv=2)
      [SETTINGS_HEADER_TABLE_SIZE(0x01):4096]
      [SETTINGS_INITIAL_WINDOW_SIZE(0x04):65535]
[  0.001] send SETTINGS frame <length=0, flags=0x01, stream_id=0>
      ; ACK
      (niv=0)
[  0.002] recv (stream_id=1) :status: 200
[  0.002] recv (stream_id=1) server: Jetty(9.4.z-SNAPSHOT)
[  0.002] recv (stream_id=1) date: Fri, 20 May 2016 09:38:52 GMT
[  0.002] recv HEADERS frame <length=45, flags=0x05, stream_id=1>
      ; END_STREAM | END_HEADERS
      (padlen=0)
      ; First response header
[  0.002] send GOAWAY frame <length=8, flags=0x00, stream_id=0>
      (last_stream_id=0, error_code=NO_ERROR(0x00), opaque_data(0)=[])

直接测试明文HTTP / 2：

$ nghttp -v http://localhost:8080/

[  0.000] Connected
[  0.000] send SETTINGS frame <length=12, flags=0x00, stream_id=0>
      (niv=2)
      [SETTINGS_MAX_CONCURRENT_STREAMS(0x03):100]
      [SETTINGS_INITIAL_WINDOW_SIZE(0x04):65535]
[  0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=3>
      (dep_stream_id=0, weight=201, exclusive=0)
[  0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=5>
      (dep_stream_id=0, weight=101, exclusive=0)
[  0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=7>
      (dep_stream_id=0, weight=1, exclusive=0)
[  0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=9>
      (dep_stream_id=7, weight=1, exclusive=0)
[  0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=11>
      (dep_stream_id=3, weight=1, exclusive=0)
[  0.000] send HEADERS frame <length=38, flags=0x25, stream_id=13>
      ; END_STREAM | END_HEADERS | PRIORITY
      (padlen=0, dep_stream_id=11, weight=16, exclusive=0)
      ; Open new stream
      :method: GET
      :path: /
      :scheme: http
      :authority: localhost:8080
      accept: */*
      accept-encoding: gzip, deflate
      user-agent: nghttp2/1.7.1
[  0.095] recv SETTINGS frame <length=12, flags=0x00, stream_id=0>
      (niv=2)
      [SETTINGS_HEADER_TABLE_SIZE(0x01):4096]
      [SETTINGS_INITIAL_WINDOW_SIZE(0x04):65535]
[  0.095] send SETTINGS frame <length=0, flags=0x01, stream_id=0>
      ; ACK
      (niv=0)
[  0.096] recv SETTINGS frame <length=0, flags=0x01, stream_id=0>
      ; ACK
      (niv=0)
[  0.105] recv (stream_id=13) :status: 200
[  0.105] recv (stream_id=13) server: Jetty(9.4.z-SNAPSHOT)
[  0.105] recv (stream_id=13) date: Fri, 20 May 2016 09:39:30 GMT
[  0.105] recv HEADERS frame <length=45, flags=0x05, stream_id=13>
      ; END_STREAM | END_HEADERS
      (padlen=0)
      ; First response header
[  0.106] send GOAWAY frame <length=8, flags=0x00, stream_id=0>
      (last_stream_id=0, error_code=NO_ERROR(0x00), opaque_data(0)=[])

什么网站支持没有SSL的端口80上的http / 2？

1 个答案: