[Java] Messages without channel code not supported about aisparser HOT 3 OPEN

It should gracefully handle not having a channel code, as long as the checksum matches it should parse it.
Maybe use 'U' for unknown channel?

from aisparser.

Given the following two sentences, it looks like sentence 1 and 2 of a 2 part message with sequential ID of 4. But should they be combined if the channel doesn't match?? Does the channel have to match if it is given?

!BSVDM,2,1,4,A,53@oJeH00001Q2oCC30pK7KV0`4ppF220000000N0P82240Ht520C4p8,0*5D
!BSVDM,2,2,4,B,00000000000,2*3A

from aisparser.

No, they should not be combined. AIS doesn't split messages between channels.

When feeding messages to the parser they need to be from the same channel and sequence, and in order. I just looked at the C and Java code (for the first time in a long while) and it looks like there is a bug in the Java code. It doesn't check the channel to make sure it matches the existing sequence. I've opened issue #37 for this.

from aisparser.