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Two main flavours of binary protocols exist in the world of networking and thus also in the world of GGZ: raw protocols (unquantised) and packet protocols (quantised). The first ones are referred to as 'easysock-style', and the others as 'dio-style'. GGZComm can generate source code for all of the implementations of both flavours.
The easysock format specifies that signed characters, signed integers and strings can be read and written over the network. This format is supported by the easysock functions of libggz in C, by Qt's QDataStream class in C++ (and various scriping languages), by the KGGZRaw class of libkdegames in C++ and by the Net class of ggzdmod++ in C++. It is also supported by GGZBoard's network class in Python.
The DataIO format (dio) is similar to the one of easysock, however write operations happen in packets with the size of the packet prepended to the packet data itself. This makes it possible to deterministically know if all data has arrived already, and thus guarantees non-blocking read operations. This format is supported by the dio functions of libggz in C, and by the KGGZPacket class of libkdegames in C++.
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