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#### http::error

Error codes returned from HTTP algorithms and operations.

##### Synopsis

Defined in header `<boost/beast/http/error.hpp>`

    enum error

##### Values

Name | Description
--- | ---
`end_of_stream` | The end of the stream was reached. This error is returned when attempting to read HTTP data, and the stream returns the error `net::error::eof` before any octets corresponding to a new HTTP message have been received.
`partial_message` | The incoming message is incomplete. This happens when the end of stream is reached during parsing and some octets have been received, but not the entire message.
`need_more` | Additional buffers are required. This error is returned during parsing when additional octets are needed. The caller should append more data to the existing buffer and retry the parse operaetion.
`unexpected_body` | An unexpected body was encountered during parsing. This error is returned when attempting to parse body octets into a message container which has the @ref empty_body body type. @see empty_body

`need_buffer`

Additional buffers are required.

This error is returned under the following conditions:

@li During serialization when using @ref buffer_body. The caller should update the body to point to a new buffer or indicate that there are no more octets in the body.

@li During parsing when using @ref buffer_body. The caller should update the body to point to a new storage area to receive additional body octets.

`end_of_chunk` | The end of a chunk was reached.
`buffer_overflow` | Buffer maximum exceeded. This error is returned when reading HTTP content into a dynamic buffer, and the operation would exceed the maximum size of the buffer.
`header_limit` | Header limit exceeded. The parser detected an incoming message header which exceeded a configured limit.
`body_limit` | Body limit exceeded. The parser detected an incoming message body which exceeded a configured limit.
`bad_alloc` | A memory allocation failed. When basic_fields throws std::bad_alloc, it is converted into this error by @ref parser.
`bad_line_ending` | The line ending was malformed.
`bad_method` | The method is invalid.
`bad_target` | The request-target is invalid.
`bad_version` | The HTTP-version is invalid.
`bad_status` | The status-code is invalid.
`bad_reason` | The reason-phrase is invalid.
`bad_field` | The field name is invalid.
`bad_value` | The field value is invalid.
`bad_content_length` | The Content-Length is invalid.
`bad_transfer_encoding` | The Transfer-Encoding is invalid.
`bad_chunk` | The chunk syntax is invalid.
`bad_chunk_extension` | The chunk extension is invalid.
`bad_obs_fold` | An obs-fold exceeded an internal limit.
`stale_parser` | The parser is stale. This happens when attempting to re-use a parser that has already completed parsing a message. Programs must construct a new parser for each message. This can be easily done by storing the parser in an boost or std::optional container.

##### Description

Convenience header `<boost/beast/http.hpp>`