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common.go
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common.go
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package server
import (
"crypto/tls"
"net/http"
"time"
"github.com/sirupsen/logrus"
)
var slog = logrus.WithField("module", "server")
func Default(srv *http.Server) *http.Server {
// defaults taken from https://bruinsslot.jp/post/go-secure-webserver/ can be overriden by caller
if srv.Handler != nil {
// No more than 2MB body
srv.Handler = http.MaxBytesHandler(srv.Handler, 2<<20)
} else {
slog.Warnf("Handler not yet set on server while securing defaults. Make sure a MaxByte middleware is used.")
}
if srv.ReadTimeout == 0 {
srv.ReadTimeout = 10 * time.Second
}
if srv.ReadHeaderTimeout == 0 {
srv.ReadHeaderTimeout = 5 * time.Second
}
if srv.WriteTimeout == 0 {
srv.WriteTimeout = 10 * time.Second
}
if srv.IdleTimeout == 0 {
srv.IdleTimeout = 120 * time.Second
}
if srv.MaxHeaderBytes == 0 {
srv.MaxHeaderBytes = 1 << 20 // 1MB
}
if srv.TLSConfig == nil {
srv.TLSConfig = &tls.Config{}
}
if srv.TLSConfig.MinVersion == 0 {
srv.TLSConfig.MinVersion = tls.VersionTLS13
}
// Disable http/2
srv.TLSNextProto = make(map[string]func(*http.Server, *tls.Conn, http.Handler), 0)
return srv
}