quick fix version of restler, since restler stop update, there are some bugs since node.js upgrade
the fs.read funciton is changed in node.js
change the code in multipartform.js
//Now write out the body of the Part if (this.value instanceof File) { fs.open(this.value.path, 'r+', function (err, fd) { if (err) throw err;
var position = 0; var buf = new Buffer(1024 * 4); (function reader () { fs.read(fd, buf, 0, buf.length, position, function (er, chunk, buf) { if (er) callback(err); stream.write(buf.slice(0, chunk)); position += 1024 * 4; if (chunk) reader(); else { stream.write("\r\n") // callback(); fs.close(fd, callback); } }); })(); // reader() }); } else if (this.value instanceof Data) { stream.write(this.value.data); stream.write("\r\n"); callback(); } else { stream.write(this.value + "\r\n"); callback(); }