allow selecting hash

src/cli/cli.go

@@ -55,6 +55,7 @@ func Run() (err error) {
 			ArgsUsage:   "[filename]",
 			Flags: []cli.Flag{
 				&cli.StringFlag{Name: "code", Aliases: []string{"c"}, Usage: "codephrase used to connect to relay"},
+				&cli.StringFlag{Name: "hash", Value: "xxhash", Usage: "hash algorithm (xxhash, imohash, md5)"},
 				&cli.StringFlag{Name: "text", Aliases: []string{"t"}, Usage: "send some text"},
 				&cli.BoolFlag{Name: "no-local", Usage: "disable local relay when sending"},
 				&cli.BoolFlag{Name: "no-multi", Usage: "disable multiplexing"},
@@ -199,7 +200,7 @@ func send(c *cli.Context) (err error) {
 		NoCompress:     c.Bool("no-compress"),
 		Overwrite:      c.Bool("overwrite"),
 		Curve:          c.String("curve"),
-		HashAlgorithm:  "xxhash",
+		HashAlgorithm:  c.String("hash"),
 	}
 	if crocOptions.RelayAddress != models.DEFAULT_RELAY {
 		crocOptions.RelayAddress6 = ""
@@ -408,7 +409,6 @@ func receive(c *cli.Context) (err error) {
 		IP:            c.String("ip"),
 		Overwrite:     c.Bool("overwrite"),
 		Curve:         c.String("curve"),
-		HashAlgorithm: "xxhash",
 	}
 	if crocOptions.RelayAddress != models.DEFAULT_RELAY {
 		crocOptions.RelayAddress6 = ""

src/croc/croc.go

@@ -776,7 +776,7 @@ func (c *Client) processMessageFileInfo(m message.Message) (done bool, err error
 	c.Options.NoCompress = senderInfo.NoCompress
 	c.Options.HashAlgorithm = senderInfo.HashAlgorithm
 	if c.Options.HashAlgorithm == "" {
-		c.Options.HashAlgorithm = "imohash"
+		c.Options.HashAlgorithm = "xxhash"
 	}
 	log.Debugf("using hash algorithm: %s", c.Options.HashAlgorithm)
 	if c.Options.NoCompress {