Most of the signatures end with the short integer 0x4b50, which is stored in little-endian ordering. Viewed as an ASCII string this reads "PK", the initials of the inventor Phil Katz. Thus, when a ZIP file is viewed in a text editor the first two bytes of the file are usually "PK". (DOS, OS/2 and Windows self-extracting ZIPs have an EXE before the ZIP so start with "MZ"; self-extracting ZIPs for other operating systems may similarly be preceded by executable code for extracting the archive's content on that platform.)
A user authenticates their identity by entering their password (or giving some other proof of identity). The authenticated user then authorizes the client app to send an authorized request to the server on the user's behalf.
Skill execution failed because the call to Azure AI services was throttled. Typically, this class of failure occurs when too many skills are executing in parallel. If you're using the Microsoft.Search.Documents client library to run the indexer, you can use the SearchIndexingBufferedSender to get automatic retry on failed steps. Otherwise, you can reset and rerun the indexer.
The indexer parsing modes need to know how text is encoded before parsing it. The two most common ways of encoding text are UTF-16 and UTF-8. UTF-8 is a variable-length encoding where each character is between 1 byte and 4 bytes long. UTF-16 is a fixed-length encoding where each character is 2 bytes long. UTF-16 has two different variants, "big endian" and "little endian". Text encoding is determined by a "byte order mark", a series of bytes before the text.
Symmetric - the protocol itself is completely symmetric, meaning bothclient and server can serve requests. This allows, among other things, for theserver to invoke callbackson the client side.
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