amitpansuria

helo,
if i wan to develping socket application using c++on linux.
if i want to transfer whole object then how can i transfer object from server to client using socket(tcp/ip) protocol
Regards,
Amit

lectricpharaoh

If it's between machines with the same endianness, you can just trasmit it as a block of bytes. If not, or if you simply want a more portable solution, you can serialize the structure, and then send the bytestream out. Take your pic; it depends on your needs.

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Eoin

Boost.Serialization is very comprehensive library which could be helpful.

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amitpansuria

helo u say that i want to serialize the structure or object.
can u tell me what exactly is serialization and how i implement serialization
Amit

lectricpharaoh

Serialization, in this sense, is the process of taking a chunk of data and coverting it to a sequence of bytes for some kind of operation (generally writing to disk or sending across a network connection). In some contexts, the disk write/network transmission is subsumed in the term 'serialization'.

One of the benefits of serialization is it converts internal representations of data to a series of bytes, and thus the byte order of the CPU doesn't matter. Say you transmit a 32-bit int across a network connection, and the sending computer is, say, an Intel x86-based machine. The x86 architecture is 'little endian', meaning that multi-byte values are ordered in memory with the least significant byte first. In other words, the value 0xAABBCCDD would be four bytes, in this order: 0xDD, 0xCC, 0xBB, and 0xAA. The receiving computer, on the other hand, might be a big-endian machine, expecting the bytes like so: 0xAA, 0xBB, 0xCC, and 0xDD. Hell, maybe the receiving machine uses 64-bit ints. Either way, you have a problem.

Another benefit is that many functions for writing to disk or communicating across a network expect a buffer of bytes to work with. Serialization gives you this buffer of bytes.

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A man's knowledge is like an expanding sphere, the surface corresponding to the boundary between the known and the unknown. As the sphere grows, so does its surface; the more a man learns, the more he realizes how much he does not know. Hence, the most ignorant man thinks he knows it all. - L. Sprague de Camp