multipart-post CHANGELOG v1.0 First release. v1.1 encode autogenerates the boundary by default v1.2 Support non-ASCII file names Use ltn12 chunked streaming to allow for sending large files v1.3 Fix Lua 5.1 / LuaJIT support 1.4 Boundary no longer enclosed in quotes in Content-Type header. This avoids bugs in some Web servers.