9 pub struct Ping {  struct
15 // zeroes to distinguish this specific PING from any other.
19 impl Ping {  argument
32     pub fn new(payload: Payload) -> Ping {  in new()  argument
33         Ping {  in new()
39     pub fn pong(payload: Payload) -> Ping {  in pong()  argument
40         Ping { ack: true, payload }  in pong()
55     /// Builds a `Ping` frame from a raw frame.
56     pub fn load(head: Head, bytes: &[u8]) -> Result<Ping, Error> {  in load()  argument
57         debug_assert_eq!(head.kind(), crate::frame::Kind::Ping);  in load()
59         // PING frames are not associated with any individual stream. If a PING  in load()
67         // In addition to the frame header, PING frames MUST contain 8 octets of opaque  in load()
76         // The PING frame defines the following flags:  in load()
78         // ACK (0x1): When set, bit 0 indicates that this PING frame is a PING  in load()
79         //    response. An endpoint MUST set this flag in PING responses. An  in load()
80         //    endpoint MUST NOT respond to PING frames containing this flag.  in load()
83         Ok(Ping { ack, payload })  in load()
88         tracing::trace!("encoding PING; ack={} len={}", self.ack, sz);  in encode()
91         let head = Head::new(Kind::Ping, flags, StreamId::zero());  in encode()
98 impl<T> From<Ping> for Frame<T> {
99     fn from(src: Ping) -> Frame<T> {  in from()
100         Frame::Ping(src)  in from()