fix(tm2): make HTTPClient support https (gnolang#1158)

Co-authored-by: Manfred Touron <[email protected]>

tm2/pkg/bft/rpc/lib/client/http_client.go

@@ -78,12 +78,6 @@ func parseRemoteAddr(remoteAddr string) (network string, s string, err error) {
 		return "", "", fmt.Errorf("invalid addr: %s", remoteAddr)
 	}
 
-	// accept http(s) as an alias for tcp
-	switch protocol {
-	case protoHTTP, protoHTTPS:
-		protocol = protoTCP
-	}
-
 	return protocol, address, nil
 }
 
@@ -99,6 +93,12 @@ func makeHTTPDialer(remoteAddr string) func(string, string) (net.Conn, error) {
 		return makeErrorDialer(err)
 	}
 
+	// net.Dial doesn't understand http/https, so change it to TCP
+	switch protocol {
+	case protoHTTP, protoHTTPS:
+		protocol = protoTCP
+	}
+
 	return func(proto, addr string) (net.Conn, error) {
 		return net.Dial(protocol, address)
 	}

tm2/pkg/bft/rpc/lib/client/http_client_test.go

@@ -0,0 +1,52 @@
+package rpcclient
+
+import (
+	"testing"
+
+	"github.com/jaekwon/testify/assert"
+)
+
+func Test_parseRemoteAddr(t *testing.T) {
+	tt := []struct {
+		remoteAddr              string
+		network, s, errContains string
+	}{
+		{"127.0.0.1", "tcp", "127.0.0.1", ""},
+		{"https://example.com", "https", "example.com", ""},
+		{"wss://[::1]", "wss", "[::1]", ""},
+		// no error cases - they cannot happen!
+	}
+
+	for _, tc := range tt {
+		n, s, err := parseRemoteAddr(tc.remoteAddr)
+		if tc.errContains != "" {
+			_ = assert.NotNil(t, err) && assert.Contains(t, err.Error(), tc.errContains)
+		}
+		assert.NoError(t, err)
+		assert.Equal(t, n, tc.network)
+		assert.Equal(t, s, tc.s)
+	}
+}
+
+// Following tests check that we correctly translate http/https to tcp,
+// and other protocols are left intact from parseRemoteAddr()
+
+func Test_makeHTTPDialer(t *testing.T) {
+	dl := makeHTTPDialer("https://.")
+	_, err := dl("hello", "world")
+	if assert.NotNil(t, err) {
+		e := err.Error()
+		assert.Contains(t, e, "dial tcp:", "should convert https to tcp")
+		assert.Contains(t, e, "address .:", "should have parsed the address (as incorrect)")
+	}
+}
+
+func Test_makeHTTPDialer_noConvert(t *testing.T) {
+	dl := makeHTTPDialer("udp://.")
+	_, err := dl("hello", "world")
+	if assert.NotNil(t, err) {
+		e := err.Error()
+		assert.Contains(t, e, "dial udp:", "udp protocol should remain the same")
+		assert.Contains(t, e, "address .:", "should have parsed the address (as incorrect)")
+	}
+}