bouncer/internal/config/proxy_server.go

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package config
import (
"crypto/tls"
"net/http"
"time"
)
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type ProxyServerConfig struct {
HTTP HTTPConfig `yaml:"http"`
Metrics MetricsConfig `yaml:"metrics"`
Transport TransportConfig `yaml:"transport"`
Dial DialConfig `yaml:"dial"`
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Sentry SentryConfig `yaml:"sentry"`
}
// See https://pkg.go.dev/net/http#Transport
type TransportConfig struct {
ForceAttemptHTTP2 InterpolatedBool `yaml:"forceAttemptHTTP2"`
MaxIdleConns InterpolatedInt `yaml:"maxIdleConns"`
MaxIdleConnsPerHost InterpolatedInt `yaml:"maxIdleConnsPerHost"`
MaxConnsPerHost InterpolatedInt `yaml:"maxConnsPerHost"`
IdleConnTimeout *InterpolatedDuration `yaml:"idleConnTimeout"`
TLSHandshakeTimeout *InterpolatedDuration `yaml:"tlsHandshakeTimeout"`
ExpectContinueTimeout *InterpolatedDuration `yaml:"expectContinueTimeout"`
DisableKeepAlives InterpolatedBool `yaml:"disableKeepAlives"`
DisableCompression InterpolatedBool `yaml:"disableCompression"`
ResponseHeaderTimeout *InterpolatedDuration `yaml:"responseHeaderTimeout"`
WriteBufferSize InterpolatedInt `yaml:"writeBufferSize"`
ReadBufferSize InterpolatedInt `yaml:"readBufferSize"`
MaxResponseHeaderBytes InterpolatedInt `yaml:"maxResponseHeaderBytes"`
InsecureSkipVerify InterpolatedBool `yaml:"insecureSkipVerify"`
}
func (c TransportConfig) AsTransport() *http.Transport {
httpTransport := http.DefaultTransport.(*http.Transport).Clone()
httpTransport.Proxy = http.ProxyFromEnvironment
httpTransport.ForceAttemptHTTP2 = bool(c.ForceAttemptHTTP2)
httpTransport.MaxIdleConns = int(c.MaxIdleConns)
httpTransport.MaxIdleConnsPerHost = int(c.MaxIdleConnsPerHost)
httpTransport.MaxConnsPerHost = int(c.MaxConnsPerHost)
httpTransport.IdleConnTimeout = time.Duration(*c.IdleConnTimeout)
httpTransport.TLSHandshakeTimeout = time.Duration(*c.TLSHandshakeTimeout)
httpTransport.ExpectContinueTimeout = time.Duration(*c.ExpectContinueTimeout)
httpTransport.DisableKeepAlives = bool(c.DisableKeepAlives)
httpTransport.DisableCompression = bool(c.DisableCompression)
httpTransport.ResponseHeaderTimeout = time.Duration(*c.ResponseHeaderTimeout)
httpTransport.WriteBufferSize = int(c.WriteBufferSize)
httpTransport.ReadBufferSize = int(c.ReadBufferSize)
httpTransport.MaxResponseHeaderBytes = int64(c.MaxResponseHeaderBytes)
if httpTransport.TLSClientConfig == nil {
httpTransport.TLSClientConfig = &tls.Config{}
}
httpTransport.TLSClientConfig.InsecureSkipVerify = bool(c.InsecureSkipVerify)
return httpTransport
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}
func NewDefaultProxyServerConfig() ProxyServerConfig {
return ProxyServerConfig{
HTTP: NewHTTPConfig("0.0.0.0", 8080),
Metrics: NewDefaultMetricsConfig(),
Transport: NewDefaultTransportConfig(),
Dial: NewDefaultDialConfig(),
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Sentry: NewDefaultSentryConfig(),
}
}
// See https://pkg.go.dev/net#Dialer
type DialConfig struct {
Timeout *InterpolatedDuration `yaml:"timeout"`
KeepAlive *InterpolatedDuration `yaml:"keepAlive"`
FallbackDelay *InterpolatedDuration `yaml:"fallbackDelay"`
DualStack InterpolatedBool `yaml:"dualStack"`
}
func NewDefaultDialConfig() DialConfig {
return DialConfig{
Timeout: NewInterpolatedDuration(30 * time.Second),
KeepAlive: NewInterpolatedDuration(30 * time.Second),
FallbackDelay: NewInterpolatedDuration(300 * time.Millisecond),
DualStack: true,
}
}
func NewDefaultTransportConfig() TransportConfig {
return TransportConfig{
ForceAttemptHTTP2: true,
MaxIdleConns: 100,
MaxIdleConnsPerHost: 100,
MaxConnsPerHost: 100,
IdleConnTimeout: NewInterpolatedDuration(90 * time.Second),
TLSHandshakeTimeout: NewInterpolatedDuration(10 * time.Second),
ExpectContinueTimeout: NewInterpolatedDuration(1 * time.Second),
ResponseHeaderTimeout: NewInterpolatedDuration(10 * time.Second),
DisableCompression: false,
DisableKeepAlives: false,
ReadBufferSize: 4096,
WriteBufferSize: 4096,
MaxResponseHeaderBytes: 0,
InsecureSkipVerify: false,
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}
}