Learning Functional Programming in Go

src/server/server.go

We can skim the imports to get an idea of what we'll be doing in this file. We'll process some HTTP requests, marshal some JSON-converting strings to integers, handle errors, and implement a logger for our server:

package serverimport (   "encoding/json"   "fmt"   "github.com/pkg/errors"   "log"   "net/http"   "os"   "strconv")

We'll define three constants and use them when defining our default values:

const (   defaultServerMaxMessageSize = 1024 * 1024 * 4   defaultMaxNumber = 30   defaultMaxConcurrentConnections = 2)var defaultServerOptions = options {   maxMessageSize:          defaultServerMaxMessageSize,   maxNumber:               defaultMaxNumber,   maxConcurrentConnections:  defaultMaxConcurrentConnections,}

Our Server struct has three fields:

type Server struct ...