Add http connector docs (#169)

docs/design-document/03-connect/04-http-connector.md

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+# HTTP
+
+## HTTP Source Connector
+
+### Configuration
+
+Before using HTTP source connector, you need to configure the server.
+- Please configure `sourceEnable` to `true` in `/resource/server-config.yml` to enable source functionality.
+- Please configure the source connector in `/resource/source-config.yml`, only the configuration under `connectorConfig` is described here:
+ - `connectorName`, name of the connector.
+ - (required) `path`, path of the API.
+ - (required) `port`, port of the API.
+ - `idleTimeout`, idle TCP connection timeout in seconds. A connection will timeout and be closed if no data is received nor sent within the `idleTimeout` seconds. The default is 0, which means don't timeout.
+
+### Startup
+
+1. start EventMesh Runtime
+2. start eventmesh-connector-http
+
+When finished, the HTTP source connector will act as an HTTP server.
+
+### Sending messages
+
+You can send messages to the source connector via HTTP.
+
+```yaml
+connectorConfig:
+ connectorName: httpSource
+ path: /test
+ port: 3755
+ idleTimeout: 5
+```
+
+The above example configures a URL `http://localhost:3755/test` in `source-config.yml`.
+
+You can send messages in `binary` mode or `structured` mode as specified in [cloudevent-spec](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/bindings/http-protocol-binding.md).
+
+Here are two examples:
+
+1. Sending a message in `binary` mode.
+
+```shell
+curl --location --request POST 'http://localhost:3755/test' \
+--header 'ce-id: 1' \
+--header 'ce-specversion: 1.0' \
+--header 'ce-type: com.example.someevent' \
+--header 'ce-source: /mycontext' \
+--header 'ce-subject: test_topic' \
+--header 'Content-Type: text/plain' \
+--data-raw 'testdata'
+```
+
+2. Sending a message in `structured` mode.
+
+```shell
+curl --location --request POST 'http://localhost:3755/test' \
+--header 'Content-Type: application/cloudevents+json' \
+--data-raw '{
+ "id": "1",
+ "specversion": "1.0",
+ "type": "com.example.someevent",
+ "source": "/mycontext",
+ "subject":"test_topic",
+ "datacontenttype":"text/plain",
+ "data": "testdata"
+}'
+```

i18n/zh/docusaurus-plugin-content-docs/current/design-document/03-connect/04-http-connector.md

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+# HTTP
+
+## HTTP Source Connector
+
+### 配置
+
+使用 HTTP source connector 前，需要进行 server 的配置。
+- 请在 `/resource/server-config.yml` 中配置 `sourceEnable`为`true` 以开启 source 功能。
+- 请在 `/resource/source-config.yml`中配置 source connector, 在此仅说明 `connectorConfig` 下的配置：
+ - `connectorName`, connector 的名称
+ - （必需） `path`, 接口的路径
+ - （必需） `port`, 接口的端口
+ - `idleTimeout`, 空闲 TCP 连接超时时间，单位为秒。超过 `idleTimeout` 秒没有进行数据接收或发送的连接将会发生超时并被关闭。默认为 0, 不会发生超时。
+
+### 启动
+
+1. 启动 EventMesh Runtime
+2. 启动 eventmesh-connector-http
+
+完成后，HTTP source connector 会作为一个 HTTP 服务器对外提供服务。
+
+### 发送消息
+
+你可以通过 HTTP 向 source connector 发送消息。
+
+```yaml
+connectorConfig:
+ connectorName: httpSource
+ path: /test
+ port: 3755
+ idleTimeout: 5
+```
+
+上述的例子在`source-config.yml`中配置了一个 URL `http://localhost:3755/test`.
+
+你可以按照 [cloudevent-spec](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/bindings/http-protocol-binding.md) 中的规定，以`binary`模式或者`structured`模式发送消息。
+
+这里是两个例子：
+
+以`binary`模式发送消息。
+
+```shell
+curl --location --request POST 'http://localhost:3755/test' \
+--header 'ce-id: 1' \
+--header 'ce-specversion: 1.0' \
+--header 'ce-type: com.example.someevent' \
+--header 'ce-source: /mycontext' \
+--header 'ce-subject: test_topic' \
+--header 'Content-Type: text/plain' \
+--data-raw 'testdata'
+```
+
+以`structured`模式发送消息。
+
+```shell
+curl --location --request POST 'http://localhost:3755/test' \
+--header 'Content-Type: application/cloudevents+json' \
+--data-raw '{
+ "id": "1",
+ "specversion": "1.0",
+ "type": "com.example.someevent",
+ "source": "/mycontext",
+ "subject":"test_topic",
+ "datacontenttype":"text/plain",
+ "data": "testdata"
+}'
+```