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node-pg-copy-streams/message-formats.js

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/**
* The COPY feature uses the following protocol codes.
* The codes for the most recent protocol version are documented on
* https://www.postgresql.org/docs/current/static/protocol-message-formats.html
*
* The protocol flow itself is described on
* https://www.postgresql.org/docs/current/static/protocol-flow.html
*/
module.exports = {
ErrorResponse: 0x45, // E
CopyInResponse: 0x47, // G
CopyOutResponse: 0x48, // H
CopyBothResponse: 0x57, // W
CopyDone: 0x63, // c
CopyData: 0x64, // d
CopyFail: 0x66, // f
// It is possible for NoticeResponse and ParameterStatus messages to be interspersed between CopyData messages;
// frontends must handle these cases, and should be prepared for other asynchronous message types as well
// (see Section 50.2.6).
// Otherwise, any message type other than CopyData or CopyDone may be treated as terminating copy-out mode.
NotificationResponse: 0x41, // A
NoticeResponse: 0x4E, // N
ParameterStatus: 0x53 // S
}