panic: runtime error: index out of range

[cioban]

Hi

I'm trying to run the server example in order to just print the messages received on the port.
My intent is verify all messages sent by a software called M32Edit (from Behringer).
However my server application is crashing after I start my client application (the M32Edit).
I'm receiving the error: panic: runtime error: index out of range

Here is my code:

package main

import (
    "github.com/hypebeast/go-osc/osc"
    "fmt"
)
func main() {
  addr := "0.0.0.0:10023"
  fmt.Println("Starting server at:", addr)
  server := &osc.Server{Addr: addr}

  fmt.Println(server)
  
  /*
  server.Handle("/message/address", func(msg *osc.Message) {
    osc.PrintMessage(msg)
  })
  */

  server.ListenAndServe()
}

Here is the output:

Starting server at: 0.0.0.0:10023
&{0.0.0.0:10023 <nil> 0s}
panic: runtime error: index out of range

goroutine 1 [running]:
github.com/hypebeast/go-osc/osc.readArguments(0xc0000c8030, 0xc0000cc000, 0xc00004bdb8, 0x8, 0x0)
	<suppressed>/Dropbox/sandbox/go/gocode/src/github.com/hypebeast/go-osc/osc/osc.go:719 +0x143d
github.com/hypebeast/go-osc/osc.readMessage(0xc0000cc000, 0xc00004bdb8, 0xc0000ce000, 0x1, 0x1000)
	<suppressed>/Dropbox/sandbox/go/gocode/src/github.com/hypebeast/go-osc/osc/osc.go:701 +0xd3
github.com/hypebeast/go-osc/osc.readPacket(0xc0000cc000, 0xc00004bdb8, 0x8, 0xc0000ce000, 0x1000, 0x1000, 0xc0000c8000)
	<suppressed>/Dropbox/sandbox/go/gocode/src/github.com/hypebeast/go-osc/osc/osc.go:628 +0x116
github.com/hypebeast/go-osc/osc.(*Server).readFromConnection(0xc00000c0c0, 0x56bd60, 0xc00000e038, 0x56ade0, 0xc000074630, 0x0, 0x0)
	<suppressed>/Dropbox/sandbox/go/gocode/src/github.com/hypebeast/go-osc/osc/osc.go:602 +0x230
github.com/hypebeast/go-osc/osc.(*Server).Serve(0xc00000c0c0, 0x56bd60, 0xc00000e038, 0xd, 0x56bd60)
	<suppressed>/Dropbox/sandbox/go/gocode/src/github.com/hypebeast/go-osc/osc/osc.go:559 +0x4a
github.com/hypebeast/go-osc/osc.(*Server).ListenAndServe(0xc00000c0c0, 0x1, 0x1)
	<suppressed>/Dropbox/sandbox/go/gocode/src/github.com/hypebeast/go-osc/osc/osc.go:551 +0xa0
main.main()
	<suppressed>/Dropbox/sandbox/go/gocode/src/osc_server/main.go:27 +0x121
exit status 2

I believe this is an issue with the library.
Can you please help me to solve this issue?

[porjo]

if typetags[0] != ',' { is being run where typetags is an empty string - this produces the index out of range error. This is a bug in the library, and additional checks should be added.

[dylannorthrup]

if typetags[0] != ',' { is being run where typetags is an empty string - this produces the index out of range error. This is a bug in the library, and additional checks should be added.

In the current code, it does a length check on typetags before it tries to check its values.

	if len(typetags) == 0 {
		return nil
	}

@cioban, is this still an issue with the current version of the library?