Opps, this post is intended to be posted on the Ring group, sorry for the noise.
On Friday, February 15, 2013 5:50:15 PM UTC+8, Feng Shen wrote: > > Hi, I am trying to draft a protocol for realtime communication between > client and ring server. > > http-kit <http://http-kit.org/> try to implement the protocol, provide a > fast & scalable ring adapter with websocket & async extension for Clojure > web developers. > > Here is an initial version, any thought/comment/suggestion welcome. > > (defprotocol Channel > "Asynchronous channel for HTTP streaming/long polling & websocekt" > (open? [] "Tells whether or not this channel is still open") > (close [] > "Closes this channel. If this channel is already closed then invoking > this method has no effect. Any further attempt to invoke I/O operations > is welcomed by IllegalStateException") > (send! [data & [close-after-send]] > "Send data to client. Weclomed by IllegalStateException if already closed > If `close-after-send` is true, `close` get called after sent. For > Webocket, a text frame is sent to client. For streaming: 1. First > call of send!, data expect to be {:headers _ :status _ :body _} or just body. > if `close-after-send` is true, a normal HTTP response is assembled and > sent to client, useful for HTTP client that does not support chunked > encoding(like ab). Otherwise, a chunked encoding response is > assembled, `close` signals end this response. 2. Any further call, only > body(String, File, InputStream, ISeq) is expected. The data is encoded > as chunk, sent to client") > (on-send [callback] > "Callback: (fn [data]) Do something with the data (like JSON > encoding) before sending it off") > (on-mesg [callback] > "Callback: (fn [message-string]) Set the handler to get notified when > there is message from client. Only valid for websocket. For streaming, > another HTTP connection can be used to emulate the behaviour") > (on-close [callback] > "Callback: (fn [status]) Set the handler to get notified when channel > get closed, by client `close` called. Callback is called once if server > and client both close the channel Useful for clean up. Status code: 0 > if closed by sever, closed by client: -1 if streaming, websocket: > http://tools.ietf.org/html/rfc6455#section-7.4.1";)) > > Thanks. > Feng > -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
