Golang encoding/binary.Write() function examples

package encoding/binary

Write writes the binary representation of data into w (1st parameter). Data (3rd parameter) must be a fixed-size value or a slice of fixed-size values, or a pointer to such data. Bytes written to w are encoded using the specified byte order (2nd parameter) and read from successive fields of the data. When writing structs, zero values are written for fields with blank (_) field names.

Golang encoding/binary.Write() function usage examples

Example 1 :

 package main

 import (
 "bytes"
 "encoding/binary"
 "fmt"
 "math"
 )

 func main() {
 buf := new(bytes.Buffer)
 var pi float64 = math.Pi

 err := binary.Write(buf, binary.LittleEndian, pi)
 if err != nil {
 fmt.Println("binary.Write failed:", err)
 }
 fmt.Println(buf.Bytes())
 }

Output :

[24 45 68 84 251 33 9 64]

Example 2 :

 func (self *MockRequestHandler) HandleRequest(request *protocol.Request, conn net.Conn) error {
 response := &protocol.Response{RequestId: request.Id, Type: &writeOk}
 data, _ := response.Encode()
 binary.Write(conn, binary.LittleEndian, uint32(len(data)))
 conn.Write(data)
 return nil
 }

References :

http://golang.org/pkg/encoding/binary/#Write

https://github.com/influxdb/influxdb/blob/master/coordinator/clientservertest.go