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error.go
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error.go
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// Copyright 2014-2019 Liu Dong <[email protected]>.
// Licensed under the MIT license.
package httpclient
import (
"fmt"
"net"
"strings"
)
// Package errors
const (
_ = iota
ERR_DEFAULT
ERR_TIMEOUT
ERR_REDIRECT_POLICY
)
// Custom error
type Error struct {
Code int
Message string
}
// Implement the error interface
func (this Error) Error() string {
return fmt.Sprintf("httpclient #%d: %s", this.Code, this.Message)
}
func getErrorCode(err error) int {
if err == nil {
return 0
}
if e, ok := err.(*Error); ok {
return e.Code
}
return ERR_DEFAULT
}
// Check a timeout error.
func IsTimeoutError(err error) bool {
if err == nil {
return false
}
// TODO: does not work?
if e, ok := err.(net.Error); ok && e.Timeout() {
return true
}
// TODO: make it reliable
if strings.Contains(strings.ToLower(err.Error()), "timeout") {
return true
}
return false
}
// Check a redirect error
func IsRedirectError(err error) bool {
if err == nil {
return false
}
// TODO: does not work?
if getErrorCode(err) == ERR_REDIRECT_POLICY {
return true
}
// TODO: make it reliable
if strings.Contains(err.Error(), "redirect") {
return true
}
return false
}