Handle connection failures on webhook/url pings (#8204)

Properly handle connection failures while replaying events

Fixes #8194

cmd/utils.go

@@ -29,7 +29,6 @@ import (
 	"io/ioutil"
 	"net"
 	"net/http"
-	"net/url"
 	"os"
 	"path/filepath"
 	"reflect"
@@ -426,43 +425,6 @@ func newContext(r *http.Request, w http.ResponseWriter, api string) context.Cont
 	return logger.SetReqInfo(r.Context(), reqInfo)
 }
 
-// isNetworkOrHostDown - if there was a network error or if the host is down.
-func isNetworkOrHostDown(err error) bool {
-	if err == nil {
-		return false
-	}
-	// We need to figure if the error either a timeout
-	// or a non-temporary error.
-	e, ok := err.(net.Error)
-	if ok {
-		urlErr, ok := e.(*url.Error)
-		if ok {
-			switch urlErr.Err.(type) {
-			case *net.DNSError, *net.OpError, net.UnknownNetworkError:
-				return true
-			}
-		}
-		if e.Timeout() {
-			return true
-		}
-	}
-	ok = false
-	// Fallback to other mechanisms.
-	if strings.Contains(err.Error(), "Connection closed by foreign host") {
-		ok = true
-	} else if strings.Contains(err.Error(), "TLS handshake timeout") {
-		// If error is - tlsHandshakeTimeoutError.
-		ok = true
-	} else if strings.Contains(err.Error(), "i/o timeout") {
-		// If error is - tcp timeoutError.
-		ok = true
-	} else if strings.Contains(err.Error(), "connection timed out") {
-		// If err is a net.Dial timeout.
-		ok = true
-	}
-	return ok
-}
-
 // Used for registering with rest handlers (have a look at registerStorageRESTHandlers for usage example)
 // If it is passed ["aaaa", "bbbb"], it returns ["aaaa", "{aaaa:.*}", "bbbb", "{bbbb:.*}"]
 func restQueries(keys ...string) []string {