Module codec

Expand description

Direction-parameterised framing and lossless message decoding.

Structs§

Bind: Structured Bind message.
Close: Structured Close message.
CopyResponse: Format metadata which begins a COPY sub-protocol.
DataRow: One result row retaining raw text or binary column values.
Describe: Structured Describe message.
DiagnosticField: One tagged PostgreSQL diagnostic field.
DiagnosticResponse: Ordered diagnostic fields from an error or notice response.
Execute: Structured Execute message.
FieldDescription: Metadata for one result column.
Frame: A validated PostgreSQL tagged frame, including its tag but not its length.
FunctionCall: Structured legacy FunctionCall message.
NegotiateProtocolVersion: Backend response negotiating a requested protocol minor version and options.
Parse: Structured Parse message.
PgCodec: A PostgreSQL codec which cannot confuse frontend and backend tag alphabets.
RowDescription: Backend row metadata retained in reconstructable form.

Authentication: Backend authentication request or continuation message.
Backend: Messages sent by a PostgreSQL backend.
BackendMessage: Messages sent by a PostgreSQL backend.
DescribeTarget: Namespace selected by Describe and Close messages.
Frontend: Messages sent by a PostgreSQL frontend.
FrontendMessage: Frontend messages whose contents a rewriting proxy must retain structurally.
TransactionStatus: Transaction state reported by ReadyForQuery.

DEFAULT_MAX_FRAME_LEN: Default total tagged-frame limit, including tag and length.

Direction: Decoder direction. The same byte tag has different meanings in each direction.