Posts Tagged ‘UTF-8’
Maximimum length of credentials (username, password, clientid) in MQTT v3.1.1
The CONNECT packet The MQTT CONNECT Control packet always contains a payload. It is the first packet, which the client must send to the server after the connection is established. It can only be sent once by the client, if a second CONNECT packet is sent, the server (broker) must process it as a protocol…
WeiterlesenThe Crystal programming language and encodings
Recently I found myself struggling with setting up file encodings correctly in the Crystal programming language, this is why I document this here. Crystal defaults to reading and writing files in UTF-8. Sometimes you will encounter files encoded in e.g. the Windows-1252 code page. (This is the western european code page, e.g. used for German…
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