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List:       boost-users
Subject:    [Boost-users] [Serialization] Are the serialized char* different
From:       jotalo jotalo <jotalo () hotmail ! com>
Date:       2008-08-31 22:41:19
Message-ID: BLU119-W1722E88EAB3CC429C7D570DC5D0 () phx ! gbl
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Hi,
I use the Bost  serialization library to serialize some classes that I put in a char* \
variable ... I have a Server which publish this char* variable  and Clients get this \
variable and de-serialize it to obtain the original class...

Everything work fine when servers and clients are running in machines with the same \
architecture (64 or 32 bits)...

But when I run the server in a 64 bits machine, the char* variable is not recognized \
in a 32 bits client. In this code:  std::stringstream is;
    is.rdbuf()->pubsetbuf(c, m_StringSize);
    boost::archive::binary_iarchive *ia = new boost::archive::binary_iarchive(is);

The last line returns the std::exception: "invalid signature"

To be sure that I am not doing something wrong I printed the first 80 characters of \
this variable when it is  created in a 64 bits server and a 32 bits server:

In a 64 bits machine server, the print out is:

"........serialization::archive.................MonH1F............Efficiency.(cou"    \
(the "." are not printable ascii characters)

in Hexa format it is :

16 00 00 00 00 00 00 00 73 65 72 69 61 6C 69 7A 61 74 69 6F 6E 3A 3A 
 61 72 63 68 69 76 65 04 04 08 04 08 01 00 00 00 06 00 00 00 00 00 00 00 
4D 6F 6E 48 31 46 00 00 00 00 1E 00 00 00 00 00 00 00 45 66 66 69 63 69 
65 6E 63 79 20 28 63 6F 75

And ind the case of a 32 bits machine server, it is:

"....serialization::archive.............MonH1F........Efficiency.(counter2/counte"

16 00 00 00 73 65 72 69 61 6C 69 7A 61 74 69 6F 6E 3A 3A 61 72 63 68 
69 76 65 04 04 04 04 08 01 00 00 00 06 00 00 00 4D 6F 6E 48 31 46 00 00 
00 00 1E 00 00 00 45 66 66 69 63 69 65 6E 63 79 20 28 63 6F 75 6E 74 65 
72 32 2F 63 6F 75 6E 74 65


They are similar but not equal...

Thank you, very much

Juan Otalora 


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