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IoT.js-API:-HTTP.md

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Module: http

IoT.js provides HTTP to support HTTP server and client enabling users to receive/send HTTP request easily.

Methods

http.createServer(requestListener)

  • requestListener: Function
  • Return: http.Server instance

http.request(options[, callback])

  • options: Object
  • callback: Function
  • Return: http.ClientRequest instance

http.get(options[, callback])

  • options: Object
  • callback: Function
  • Return: http.ClientRequest instance

Same as http.request except that http.get automatically call req.end() at the end.

Class: http.Server

Event

'request'

  • request: http.IncomingMessage instance.
  • response: http.ServerResponse instance. After request header is parsed, this event will be fired.

'connection'

This event is emitted when new TCP connection is established.

'close'

This event is emitted when server is closed.

Method

listen(port[, hostname][, backlog][, callback])

  • port: Number
  • host: String
  • backlog: Number
  • callback: Function

Wait for new TCP connection with specified port and hostname. If no hostname is provided, server accepts any IP address. backlog is maximum pending connections. Default backlog length is 511. callback will be called when server has been bound.

close([callback])

  • callback: Function

Stop accecpting new connection to this server. However, the existing connections is preserved. When server is finally closed after all connection closed, callback is called.

setTimeout(ms, cb)

  • ms: Number
  • cb: Function

Register cb for 'timeout' event and set socket's timeout value to ms. This event will be triggered by the underlying socket's 'timeout' event.

If cb is not provided, the socket will be destroyed automatically after timeout. If you provides cb, you should handle the socket's timeout.

Default timeout for server is 2 minutes.

Member Variable

timeout

Server's timeout value. Default value is 2 minutes.

Class: http.ClientRequest

Event

'response'

  • response: http.IncomingMessage instance

This event is emitted when server's response header is parsed. http.IncomingMessage object is passed as argument to handler.

'socket'

  • Net.socket instance

This event is emitted when a socket is assigned to this request. Net.socket object is passed as argument to handler.

After response header is parsed, this event will be fired.

Method

write(data[, callback])

  • data: Buffer|String
  • callback: Function

Sends data as a request body. callback will be called when data is flushed.

end([data][, callback])

  • data: Buffer|String
  • callback: Function

Finishes sending the request.

If data is provided, it sends data first, and finishes.

If callback is specified, it is called when the request stream is finished.

setTimeout(ms, cb)

  • ms: Number
  • cb: Function

Registers cb for 'timeout' event and set socket's timeout value to ms. This event will be triggered by the underlying socket's 'timeout' event.

If cb is not provided, the socket will be destroyed automatically after timeout. If you provides cb, you should handle the socket's timeout.

Class: http.ServerResponse

Event

'end'

Thit event is fired when no more data to be sent.

'close'

When underlying connection is closed, 'close' event is emitted.

'finish'

Thit event is emitted when the response has been sent. It does not guarantee that client has received data yet.

Method

writeHead(statusCode[, statusMessage][, headers])

  • statusCode: Number
  • statusMessage: String
  • headers: Object

Sets response's header. headers is a map between field and value in header.

setHeader(name, value)

  • name: String
  • value:

Sets response's header field(name) to value. If the field exists, it overwrites the existing value.

getHeader(name)

  • name: String

Returns name field of response's header

removeHeader(name)

  • name: String

Removes name field from response's header

write(data[, callback])

  • data: Buffer|String
  • callback: Function

Sends data as a response body. callback will be called when data is flushed.

end([data][, callback])

  • data: Buffer|String
  • callback: Function

Finishes sending the response.

If data is provided, it sends data first, and finishes.

If callback is specified, it is called when the response stream is finished.

setTimeout(ms, cb)

  • ms: Number
  • cb: Function

Register cb for 'timeout' event and set socket's timeout value to ms. This event will be triggered by the underlying socket's 'timeout' event.

Class: http.IncomingMessage

Event

'end'

This event is fired when no more data to be received.

'close'

When underlying connection is closed, 'close' event is emitted.

Method

setTimeout(ms, cb)

  • ms: Number
  • cb: Function

Register cb for 'timeout' event set socket's timeout value to ms. This event will be triggered by the underlying socket's 'timeout' event.

Member Varible

headers

HTTP header object.

method

Request method as String

url

Request URL as String

statusCode

HTTP response status code as Number of 3-digit.

statusMessage

HTTP response status message as String

socket

Underlying socket