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https://github.com/moparisthebest/spdylay
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194 lines
6.9 KiB
ReStructuredText
194 lines
6.9 KiB
ReStructuredText
Spdylay - SPDY C Library
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========================
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This is an experimental implementation of Google's SPDY protocol
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version 2 and 3 in C.
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This library provides SPDY framing layer implementation. It does not
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perform any I/O operations. When the library needs them, it calls the
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callback functions provided by the application. It also does not
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include any event polling mechanism, so the application can freely
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choose the way of handling events. This library code does not depend
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on any particular SSL library (except for example programs which
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depend on OpenSSL 1.0.1 or later).
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STATUS
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------
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Most of the SPDY/2 and SPDY/3 functionality has been implemented. In
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both versions, the direct support of server-push has not been
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available yet. The application can achieve server-push using
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primitive APIs though.
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As described below, we can create SPDY client and server with the
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current Spdylay API.
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Requirements
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------------
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The following packages are needed to build the library:
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* pkg-config >= 0.20
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To build and run the example programs, the following packages are
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needed:
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* OpenSSL >= 1.0.1
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Build from git
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--------------
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Building from git is easy, but please be sure that at least autoconf 2.68 is
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used.::
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$ autoreconf -i
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$ automake
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$ autoconf
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$ ./configure
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$ make
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API
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---
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The public API reference is available on online. Visit
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http://spdylay.sourceforge.net/. All public APIs are in
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*spdylay/spdylay.h*. All public API functions as well as the callback
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function typedefs are documented.
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Examples
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--------
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*examples* directory contains SPDY client and server implementation
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using Spdylay. These programs are intended to make sure that Spdylay
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API is acutally usable for real implementation and also for debugging
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purposes. Please note that OpenSSL with `NPN
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<http://technotes.googlecode.com/git/nextprotoneg.html>`_ support is
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required in order to build and run these programs. At the time of
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this writing, the Beta 2 of OpenSSL 1.0.1 supports NPN.
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SPDY client is called ``spdycat``. It is a dead simple downloader like
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wget/curl. It connects to SPDY server and gets resources given in the
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command-line::
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$ ./spdycat -vn https://www.google.com/
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[ 0.029] NPN select next protocol: the remote server offers:
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* spdy/2
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* http/1.1
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[ 0.040] recv SETTINGS frame <version=2, flags=0, length=12>
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(niv=1)
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[4(1):100]
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[ 0.040] send SYN_STREAM frame <version=2, flags=1, length=107>
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(stream_id=1, assoc_stream_id=0, pri=3)
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host: www.google.com:443
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method: GET
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scheme: https
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url: /
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user-agent: spdylay/0.0.0
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version: HTTP/1.1
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[ 0.087] recv SYN_REPLY frame <version=2, flags=0, length=580>
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(stream_id=1)
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cache-control: private, max-age=0
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content-type: text/html; charset=ISO-8859-1
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date: Wed, 01 Feb 2012 15:43:00 GMT
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expires: -1
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server: gws
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status: 200 OK
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version: HTTP/1.1
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x-frame-options: SAMEORIGIN
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x-xss-protection: 1; mode=block
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[ 0.087] recv DATA frame (stream_id=1, flags=0, length=4096)
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[ 0.088] recv DATA frame (stream_id=1, flags=0, length=2617)
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[ 0.094] recv DATA frame (stream_id=1, flags=0, length=4096)
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[ 0.094] recv DATA frame (stream_id=1, flags=1, length=828)
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[ 0.094] send GOAWAY frame <version=2, flags=0, length=4>
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(last_good_stream_id=0)
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``spdycat`` can speak SPDY/3. Note that SPDY/3 is still moving target
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and thus considered highly experimental. ``-3`` option forces ``spdycat``
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to use SPDY/3 only::
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$ ./spdycat -nv3 https://localhost:3000/
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[ 0.000] NPN select next protocol: the remote server offers:
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* spdy/2
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* spdy/3
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NPN selected the protocol: spdy/3
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[ 0.002] send SYN_STREAM frame <version=3, flags=1, length=95>
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(stream_id=1, assoc_stream_id=0, pri=3)
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:host: localhost:3000
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:method: GET
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:path: /
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:scheme: https
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:version: HTTP/1.1
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user-agent: spdylay/0.0.0
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[ 0.003] recv SYN_REPLY frame <version=3, flags=0, length=95>
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(stream_id=1)
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:status: 404 Not Found
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:version: HTTP/1.1
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cache-control: max-age=3600
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content-length: 144
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date: Sun, 26 Feb 2012 09:16:51 GMT
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server: spdyd spdylay/0.1.0
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[ 0.003] recv DATA frame (stream_id=1, flags=0, length=144)
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[ 0.003] recv DATA frame (stream_id=1, flags=1, length=0)
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[ 0.003] send GOAWAY frame <version=3, flags=0, length=8>
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(last_good_stream_id=0)
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SPDY server is called ``spdyd``. It is a non-blocking server and only
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serves static contents. It can speak SPDY/2 and SPDY/3::
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$ ./spdyd --htdocs=/your/htdocs/ -v 3000 server.key server.crt
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The negotiated next protocol: spdy/2
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[id=1] [ 1.633] recv SYN_STREAM frame <version=2, flags=1, length=99>
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(stream_id=1, assoc_stream_id=0, pri=3)
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host: localhost:3000
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method: GET
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scheme: https
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url: /
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user-agent: spdylay/0.0.0
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version: HTTP/1.1
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[id=1] [ 1.633] send SYN_REPLY frame <version=2, flags=0, length=126>
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(stream_id=1)
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cache-control: max-age=3600
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content-length: 8472
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date: Mon, 16 Jan 2012 12:46:27 GMT
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last-modified: Mon, 16 Jan 2012 12:46:27 GMT
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server: spdyd spdylay/0.1.0
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status: 200 OK
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version: HTTP/1.1
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[id=1] [ 1.633] send DATA frame (stream_id=1, flags=0, length=4104)
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[id=1] [ 1.633] send DATA frame (stream_id=1, flags=0, length=4104)
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[id=1] [ 1.633] send DATA frame (stream_id=1, flags=0, length=288)
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[id=1] [ 1.633] send DATA frame (stream_id=1, flags=1, length=8)
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[id=1] [ 1.633] stream_id=1 closed
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[id=1] [ 1.634] recv GOAWAY frame <version=2, flags=0, length=4>
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(last_good_stream_id=0)
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[id=1] [ 1.634] closed
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Currently, ``spdyd`` needs ``epoll`` or ``kqueue``.
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There is another SPDY server called ``spdynative``, which is
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`node.native <https://github.com/d5/node.native>`_ style simple SPDY
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server::
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#include <iostream>
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#include "spdy.h"
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int main()
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{
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spdy server;
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if(!server.listen("localhost", 8080, "server.key", "server.crt",
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[](request& req, response& res) {
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res.set_status(200);
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res.set_header("content-type", "text/plain");
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res.end("C++ FTW\n");
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}))
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return EXIT_FAILURE;
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std::cout << "Server running at http://localhost:8080/" << std::endl;
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return reactor::run(server);
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}
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Don't expect much from ``spdynative``. It is just an example and does
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not support asynchronous I/O at all.
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