etls

etls (extended tls) is a fork of the golang tls library with enhancements used for testing tls support of servers

Additional ciphers have been added and functions/methods for testing TLS protocol and cipher support of a server.

Test server compatibility

Provide tls configuration with optional CipherSuites, MinVersion, and MaxVersion. If CipherSuites is empty then the default Golang defaultCipherSuites are used.

import "github.com/jsandas/etls"

	...

	tlsCfg := etls.Config{
		ServerName:         "google.com",
		InsecureSkipVerify: true,
        CipherSuites:       []uint16{etls.TLS_AES_128_CCM_SHA256, etls.TLS_CHACHA20_POLY1305_SHA256},
		MinVersion:         uint16(etls.VersionTLS13),
		MaxVersion:         uint16(etls.VersionTLS13),
	}

	conn, err := net.DialTimeout("tcp", server, 3*time.Second)
	if err != nil {
		t.Error(err)
	}
	defer conn.Close()

    ...
	client := etls.FakeClient(conn, &tlsCfg)

	client.FakeHandshake()

	if client.handshakeErr != nil {
		fmt.Printf("handshake error msg: %v", client.handshakeErr)
	}