Change default sequence value

[daper]

0 is out of range: 0x00000001 to 0x7FFFFFFF (1 to 32767)

[daper]

In SMPP, the sequence number may range from 0x00000001 to 0x7FFFFFFF (1 to 32767) - it is equivalent to a positive signed 16 bits integer.

The sequence number should be increased monotonically for each submitted SMPP request and in case it reaches its maximum value, it should be reset to 0x00000001.

For more details you can take a look to SMPP v3.4 Specification - chapter 5.1.4 and SMPP v5.0 Specification - chapter 4.7.24.

Referrer: smpp-session-sequence-id-max-value

[farhadi]

Thanks for this PR, but Session.sequence keeps the last sequence_number that have been sent over the session and when you send a pdu, its value is increased before being assigned to pdu.sequence_number :
https://github.com/farhadi/node-smpp/blob/master/lib/smpp.js#L67

But about resetting it to 1 in case of reaching the maximum value, if you fix it and update the PR, I'm willing to merge it.

[daper]

I have been experimented an error and I solved it with this change. But you are right... Let me check it, thanks. I'll update PR.

[daper]

I could not reproduce the error :( So I have only added the reset line. Thank kyou farhadi.

[farhadi]

I've merged your commit with a little modification in 268b055.