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2a623a59d3
This fixes the `431 Request Header Fields Too Large` error By default, the read-buffer-size is 8192, up from fiber's default of 4096. Fixes #674 Fixes #636 Supersedes #637 Supersedes #663
108 lines
3.3 KiB
Go
108 lines
3.3 KiB
Go
package web
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import (
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"crypto/tls"
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"errors"
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"fmt"
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"math"
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)
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const (
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// DefaultAddress is the default address the application will bind to
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DefaultAddress = "0.0.0.0"
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// DefaultPort is the default port the application will listen on
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DefaultPort = 8080
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// DefaultReadBufferSize is the default value for ReadBufferSize
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DefaultReadBufferSize = 8192
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// MinimumReadBufferSize is the minimum value for ReadBufferSize, and also the default value set
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// for fiber.Config.ReadBufferSize
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MinimumReadBufferSize = 4096
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)
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// Config is the structure which supports the configuration of the server listening to requests
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type Config struct {
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// Address to listen on (defaults to 0.0.0.0 specified by DefaultAddress)
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Address string `yaml:"address"`
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// Port to listen on (default to 8080 specified by DefaultPort)
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Port int `yaml:"port"`
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// ReadBufferSize sets fiber.Config.ReadBufferSize, which is the buffer size for reading requests coming from a
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// single connection and also acts as a limit for the maximum header size.
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//
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// If you're getting occasional "Request Header Fields Too Large", you may want to try increasing this value.
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//
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// Defaults to DefaultReadBufferSize
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ReadBufferSize int `yaml:"read-buffer-size,omitempty"`
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// TLS configuration (optional)
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TLS *TLSConfig `yaml:"tls,omitempty"`
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}
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type TLSConfig struct {
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// CertificateFile is the public certificate for TLS in PEM format.
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CertificateFile string `yaml:"certificate-file,omitempty"`
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// PrivateKeyFile is the private key file for TLS in PEM format.
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PrivateKeyFile string `yaml:"private-key-file,omitempty"`
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}
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// GetDefaultConfig returns a Config struct with the default values
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func GetDefaultConfig() *Config {
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return &Config{
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Address: DefaultAddress,
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Port: DefaultPort,
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ReadBufferSize: DefaultReadBufferSize,
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}
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}
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// ValidateAndSetDefaults validates the web configuration and sets the default values if necessary.
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func (web *Config) ValidateAndSetDefaults() error {
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// Validate the Address
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if len(web.Address) == 0 {
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web.Address = DefaultAddress
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}
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// Validate the Port
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if web.Port == 0 {
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web.Port = DefaultPort
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} else if web.Port < 0 || web.Port > math.MaxUint16 {
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return fmt.Errorf("invalid port: value should be between %d and %d", 0, math.MaxUint16)
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}
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// Validate ReadBufferSize
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if web.ReadBufferSize == 0 {
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web.ReadBufferSize = DefaultReadBufferSize // Not set? Use the default value.
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} else if web.ReadBufferSize < MinimumReadBufferSize {
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web.ReadBufferSize = MinimumReadBufferSize // Below the minimum? Use the minimum value.
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}
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// Try to load the TLS certificates
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if web.TLS != nil {
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if err := web.TLS.isValid(); err != nil {
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return fmt.Errorf("invalid tls config: %w", err)
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}
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}
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return nil
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}
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func (web *Config) HasTLS() bool {
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return web.TLS != nil && len(web.TLS.CertificateFile) > 0 && len(web.TLS.PrivateKeyFile) > 0
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}
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// SocketAddress returns the combination of the Address and the Port
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func (web *Config) SocketAddress() string {
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return fmt.Sprintf("%s:%d", web.Address, web.Port)
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}
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func (t *TLSConfig) isValid() error {
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if len(t.CertificateFile) > 0 && len(t.PrivateKeyFile) > 0 {
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_, err := tls.LoadX509KeyPair(t.CertificateFile, t.PrivateKeyFile)
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if err != nil {
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return err
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}
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return nil
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}
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return errors.New("certificate-file and private-key-file must be specified")
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}
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