Exit Zen
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string ID 43
type: paragraph
English
These stream members are used to write websocket messages:
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7
string ID 22
type: table cell
English
This is the type of the object passed to the decorator to represent HTTP Upgrade requests.
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7
string ID 21
type: table cell
English
This is a more reliable version of [@boost:/doc/html/boost_asio/reference/buffer_size.html `net::buffer_size`] which is easier to use and also works for types which are convertible to `net::const_buffer` or `net::mutable_buffer`.
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7
string ID 30
type: table code
English
GET / HTTP/1.1
Host: www.example.com
Upgrade: websocket
Connection: upgrade
Sec-WebSocket-Key: 2pGeTR0DsE4dfZs2pH+8MA==
Sec-WebSocket-Version: 13
User-Agent: Boost.Beast/216
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7
string ID 29
type: paragraph
English
In this table:
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7
string ID 17
type: table cell
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`file` is a type alias to one of the following implementations, depending on what is available on the target platform.
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7
string ID 44
type: heading
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User-defined Teardown
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7
string ID 32
type: list
English
* [link beast.ref.boost__beast__is_buffers_generator `is_buffers_generator`]
* __ConstBufferSequence__
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7
string ID 16
type: variablelist cell
English
"There's no HTTP/2 support yet!"
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7
string ID 30
type: heading
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Requirements
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7
string ID 22
type: table cell
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This represents configured timeout settings for a websocket stream.
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7
string ID 34
type: paragraph
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The example programs that come with the library demonstrate the usage of websocket stream operations with all asynchronous varieties.
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7
string ID 54
type: table cell
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[link beast.ref.boost__beast__tcp_stream `tcp_stream`]
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7
string ID 46
type: list
English
* `P(x)` is a parsing function which produces a message container from
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7
string ID 50
type: table title
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WebSocket Stream Template Parameters
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7
string ID 33
type: paragraph
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Establish a WebSocket connection, send a message and receive the reply:
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7
string ID 46
type: paragraph
English
Ping, pong, and close messages are control frames which may be sent at any time by either peer on an established WebSocket connection. They are sent using the functions [link beast.ref.boost__beast__websocket__stream.ping `ping`], [link beast.ref.boost__beast__websocket__stream.pong `pong`]. and [link beast.ref.boost__beast__websocket__stream.close `close`]. To be notified of control frames, callers may register a ['control callback] using [link beast.ref.boost__beast__websocket__stream.control_callback `control_callback`]. The object provided with this option should be callable with the following signature:
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string ID 40
type: paragraph
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The Expect field with the value "100-continue" in a request is special. It indicates that the after sending the message header, a client desires an immediate informational response before sending the message body, which presumably may be expensive to compute or large. This behavior is described in [@https://tools.ietf.org/html/rfc7231#section-5.1.1 rfc7231 section 5.1.1]. Invoking the 100-continue behavior is implemented easily in a client by constructing a __serializer__ to send the header first, then receiving the server response, and finally conditionally send the body using the same serializer instance. A synchronous, simplified version (no timeout) of this client action looks like this:
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string ID 36
type: paragraph
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A client must also verify that the hostname or IP address in the certificate matches the expected one. The [@boost:/doc/html/boost_asio/reference/ssl__host_name_verification.html `net::ssl::host_name_verification`] helper function object can perform this verification according to the rules described in RFC 6125:
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string ID 27
type: list
English
* [*Performance:] Build applications handling thousands of connections or more.
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