Fix: serialization terminating on Null characters

[DrShIkIgAmy]

In serialize functions strlen is used. That makes impossible to serialize protobuf with null character in the messages. I propose to add function serialize(const char* string_t, int len).

[JLBuenoLopez]

Hi @DrShIkIgAmy

Please read this comment. CDR specification clearly states that:

The string contents include a single terminating null character.

[richiprosima]

Build status:

• Linux
• Linux aarch64
• Mac
• Windows

[kaerwar]

Hi @DrShIkIgAmy

Please read this comment. CDR specification clearly states that:

The string contents include a single terminating null character.

Hi JLBuenoLopez-eProsima
I don't think he's trying to express the meaning of the terminator. I understand that if the real data that the string needs to pass is 0, then Cdr will ignore this real data, resulting in meaningless passing

[JLBuenoLopez]

@kaerwar

Then do not use a string type as the CDR specification does not allow to send a null character within the string content because it is not possible to differentiate between that character being data or the terminator. You can always define a sequence of octets and within that sequence you might set any number of null characters.