Relatively large update to TCP API. No more "protocol".
Instead servers are passed a function which gets called on connection (like in the original design) which has one argument, the connecting socket. The user sets up callbacks on that. It's pretty much how I had it originally. Encoding is now set via v8 getter/setter and can be changed dynamically. The timeout for all sockets is fixed at 60 seconds for now. Need to fix that.
This commit is contained in:
Ryan
Родитель
31ba3cde17
Коммит
73fb24f48d
68
node.html
68
node.html
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@ -30,7 +30,7 @@ body {
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}
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||||
#toc a { color: #777; }
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||||
|
||||
h1, h2, h3 { color: #aaf; }
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||||
h1, h2, h3, h4 { color: #bbb; }
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||||
|
||||
h1 {
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margin: 2em 0;
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||||
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@ -42,22 +42,30 @@ h1 {
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|||
h1 a { color: inherit; }
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||||
|
||||
h2 {
|
||||
font-size: 45px;
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||||
font-size: 30px;
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||||
line-height: inherit;
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||||
font-weight: bold;
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||||
margin: 2em 0;
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||||
}
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||||
|
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h3 {
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margin: 2em 0;
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||||
font-size: 20px;
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line-height: inherit;
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||||
font-weight: bold;
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||||
}
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||||
|
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h3 {
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h4 {
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||||
margin: 1em 0;
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||||
font-size: 30px;
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||||
font-size: inherit;
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||||
line-height: inherit;
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||||
font-weight: inherit;
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||||
font-weight: bold;
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||||
}
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||||
|
||||
pre, code {
|
||||
font-family: monospace;
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||||
font-size: 13pt;
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||||
color: #eae;
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color: #aaf;
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}
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pre {
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||||
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@ -137,31 +145,33 @@ Check out <a href="#api">the documentation</a> for more examples.
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<h2 id="motivation">Motivation</h2>
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<ol>
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<li>Evented programming makes sense
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<ol>
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<li>difference between blocking/non-blocking design
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<p> There are many methods to write internet servers but they can
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fundamentally be divided into two camps: evented and threaded; non-blocking
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and blocking. A blocking server accepts a connection and launches a new
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thread to handle the connection. Because the concurrency is handled by
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the thread scheduler, a blocking server can make function calls which
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preform full network requests.
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<h3>Evented Programming Makes More Sense</h3>
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difference between blocking/non-blocking design
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<p> There are many methods to write internet servers but they can
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fundamentally be divided into two camps: evented and threaded; non-blocking
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and blocking. A blocking server accepts a connection and launches a new
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thread to handle the connection. Because the concurrency is handled by
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the thread scheduler, a blocking server can make function calls which
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preform full network requests.
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<pre class="sh_javascript">var response = db.execute("SELECT * FROM table");
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// do something</pre>
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<p> An evented server manages its concurrency itself. All connections
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are handled in a single thread and callbacks are executed on certain
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events: "socket 23 is has data to read", "socket 65's write buffer is
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empty". An evented server executes small bits of code but never
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<i>blocks</i> the process. In the evented world callbacks are used
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instead of functions
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<p> An evented server manages its concurrency itself. All connections
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are handled in a single thread and callbacks are executed on certain
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events: "socket 23 is has data to read", "socket 65's write buffer is
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empty". An evented server executes small bits of code but never
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<i>blocks</i> the process. In the evented world callbacks are used
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instead of functions
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<pre class="sh_javascript">db.execute("SELECT * FROM table", function (response) {
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// do something
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// do something
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});</pre>
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<li><a href="http://duartes.org/gustavo/blog/post/what-your-computer-does-while-you-wait">I/O latency</a>
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<p><a href="http://duartes.org/gustavo/blog/post/what-your-computer-does-while-you-wait">I/O latency</a>
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<pre>
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l1 cache ~ 3
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l2 cache ~ 14
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@ -169,9 +179,10 @@ l2 cache ~ 14
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disk ~ 41000000
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network ~ 240000000
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</pre>
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<li>purely evented interfaces rule out a lot of stupidity
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</ol>
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<li>Evented programs are more efficient
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<p>purely evented interfaces rule out a lot of stupidity
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<h3>Evented programs are more efficient</h3>
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<ol>
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<li>pthread stack size
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2mb default stack size on linux (1mb on windows, 64kb on FreeBSD)
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@ -180,7 +191,7 @@ l2 cache ~ 14
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<li>Apache vs. Nginx
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<li>event machine vs mongrel (neverblock)
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</ol>
|
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<li>The appropriateness of Javascript
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<h3>The appropriateness of Javascript</h3>
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<ol>
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<li>No I/O
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<p> Javascript is without I/O. In the browser the DOM provides I/O,
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|
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@ -200,7 +211,6 @@ l2 cache ~ 14
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systems tend to be written in C and portable web-level systems are
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written in Javascript.
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</ol>
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</ol>
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<h2 id="benchmarks">Benchmarks</h2>
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|
|
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18
src/http.cc
18
src/http.cc
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@ -60,7 +60,7 @@ HTTPConnection::v8NewClient (const Arguments& args)
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if (args[0]->IsFunction() == false)
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return ThrowException(String::New("Must pass a class as the first argument."));
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Local<Function> protocol_class = Local<Function>::Cast(args[0]);
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new HTTPConnection(args.This(), protocol_class, HTTP_RESPONSE);
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new HTTPConnection(args.This(), HTTP_RESPONSE);
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return args.This();
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}
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@ -71,7 +71,7 @@ HTTPConnection::v8NewServer (const Arguments& args)
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if (args[0]->IsFunction() == false)
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return ThrowException(String::New("Must pass a class as the first argument."));
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Local<Function> protocol_class = Local<Function>::Cast(args[0]);
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new HTTPConnection(args.This(), protocol_class, HTTP_REQUEST);
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new HTTPConnection(args.This(), HTTP_REQUEST);
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return args.This();
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}
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@ -90,8 +90,7 @@ HTTPConnection::on_message_begin (http_parser *parser)
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HTTPConnection *connection = static_cast<HTTPConnection*> (parser->data);
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HandleScope scope;
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Local<Object> protocol = connection->GetProtocol();
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Local<Value> on_message_v = protocol->Get(ON_MESSAGE_SYMBOL);
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Local<Value> on_message_v = connection->handle_->Get(ON_MESSAGE_SYMBOL);
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if (!on_message_v->IsFunction()) return -1;
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Handle<Function> on_message = Handle<Function>::Cast(on_message_v);
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@ -272,8 +271,8 @@ HTTPConnection::on_message_complete (http_parser *parser)
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return 0;
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}
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HTTPConnection::HTTPConnection (Handle<Object> handle, Handle<Function> protocol_class, enum http_parser_type type)
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: Connection(handle, protocol_class)
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HTTPConnection::HTTPConnection (Handle<Object> handle, enum http_parser_type type)
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: Connection(handle)
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{
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http_parser_init (&parser_, type);
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parser_.on_message_begin = on_message_begin;
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@ -330,15 +329,14 @@ HTTPServer::OnConnection (struct sockaddr *addr, socklen_t len)
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{
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HandleScope scope;
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Local<Function> protocol_class = GetProtocolClass();
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if (protocol_class.IsEmpty()) {
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Local<Function> connection_handler = GetConnectionHandler ();
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if (connection_handler.IsEmpty()) {
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Close();
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return NULL;
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}
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Handle<Value> argv[] = { protocol_class };
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Local<Object> connection_handle =
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HTTPConnection::server_constructor_template->GetFunction()->NewInstance(1, argv);
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HTTPConnection::server_constructor_template->GetFunction()->NewInstance(0, NULL);
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HTTPConnection *connection = NODE_UNWRAP(HTTPConnection, connection_handle);
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connection->SetAcceptor(handle_);
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|
|
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|
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@ -19,7 +19,6 @@ protected:
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static v8::Handle<v8::Value> v8NewServer (const v8::Arguments& args);
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HTTPConnection (v8::Handle<v8::Object> handle,
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v8::Handle<v8::Function> protocol_class,
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enum http_parser_type type);
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|
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void OnReceive (const void *buf, size_t len);
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|
|
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|||
126
src/net.cc
126
src/net.cc
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@ -13,6 +13,9 @@
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using namespace v8;
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using namespace node;
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#define UTF8_SYMBOL String::NewSymbol("utf8")
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#define RAW_SYMBOL String::NewSymbol("raw")
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#define ON_RECEIVE_SYMBOL String::NewSymbol("onReceive")
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#define ON_DISCONNECT_SYMBOL String::NewSymbol("onDisconnect")
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#define ON_CONNECT_SYMBOL String::NewSymbol("onConnect")
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@ -26,7 +29,7 @@ using namespace node;
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#define SERVER_SYMBOL String::NewSymbol("server")
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#define PROTOCOL_SYMBOL String::NewSymbol("protocol")
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#define PROTOCOL_CLASS_SYMBOL String::NewSymbol("protocol_class")
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#define CONNECTION_HANDLER_SYMBOL String::NewSymbol("connection_handler")
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static const struct addrinfo tcp_hints =
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/* ai_flags */ { AI_PASSIVE
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|
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@ -57,36 +60,50 @@ Connection::Initialize (v8::Handle<v8::Object> target)
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "fullClose", v8FullClose);
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "forceClose", v8ForceClose);
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constructor_template->PrototypeTemplate()->SetAccessor(
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String::NewSymbol("encoding"),
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EncodingGetter,
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EncodingSetter);
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target->Set(String::NewSymbol("Connection"), constructor_template->GetFunction());
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}
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Connection::Connection (Handle<Object> handle, Handle<Function> protocol_class)
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: ObjectWrap(handle)
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Handle<Value>
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Connection::EncodingGetter (Local<String> _, const AccessorInfo& info)
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{
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Connection *connection = NODE_UNWRAP(Connection, info.This());
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HandleScope scope;
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// Instanciate the protocol object
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Handle<Value> argv[] = { handle_ };
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Local<Object> protocol = protocol_class->NewInstance(1, argv);
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handle_->Set(PROTOCOL_SYMBOL, protocol);
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if (connection->encoding_ == UTF8)
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return scope.Close(UTF8_SYMBOL);
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else
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return scope.Close(RAW_SYMBOL);
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}
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// TODO use SetNamedPropertyHandler (or whatever) for encoding and timeout
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// instead of just reading it once?
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encoding_ = RAW;
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Local<Value> encoding_v = protocol->Get(ENCODING_SYMBOL);
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if (encoding_v->IsString()) {
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Local<String> encoding_string = encoding_v->ToString();
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char buf[5]; // need enough room for "utf8" or "raw"
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encoding_string->WriteAscii(buf, 0, 4);
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buf[4] = '\0';
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if(strcasecmp(buf, "utf8") == 0) encoding_ = UTF8;
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void
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Connection::EncodingSetter (Local<String> _, Local<Value> value, const AccessorInfo& info)
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{
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Connection *connection = NODE_UNWRAP(Connection, info.This());
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if (!value->IsString()) {
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connection->encoding_ = RAW;
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return;
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}
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HandleScope scope;
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Local<String> encoding = value->ToString();
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char buf[5]; // need enough room for "utf8" or "raw"
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encoding->WriteAscii(buf, 0, 4);
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buf[4] = '\0';
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if(strcasecmp(buf, "utf8") == 0)
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connection->encoding_ = UTF8;
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else
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connection->encoding_ = RAW;
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}
|
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|
||||
double timeout = 0.0; // default
|
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Local<Value> timeout_v = protocol->Get(TIMEOUT_SYMBOL);
|
||||
if (encoding_v->IsInt32())
|
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timeout = timeout_v->Int32Value() / 1000.0;
|
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Connection::Connection (Handle<Object> handle)
|
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: ObjectWrap(handle)
|
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{
|
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encoding_ = RAW;
|
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double timeout = 60.0; // default
|
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|
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host_ = NULL;
|
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port_ = NULL;
|
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|
|
@ -111,20 +128,6 @@ Connection::~Connection ()
|
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ForceClose();
|
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}
|
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|
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Local<Object>
|
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Connection::GetProtocol (void)
|
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{
|
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HandleScope scope;
|
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|
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Local<Value> protocol_v = handle_->Get(PROTOCOL_SYMBOL);
|
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if (protocol_v->IsObject()) {
|
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Local<Object> protocol = protocol_v->ToObject();
|
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return scope.Close(protocol);
|
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}
|
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|
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return Local<Object>();
|
||||
}
|
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|
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void
|
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Connection::SetAcceptor (Handle<Object> acceptor_handle)
|
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{
|
||||
|
|
@ -138,10 +141,7 @@ Handle<Value>
|
|||
Connection::v8New (const Arguments& args)
|
||||
{
|
||||
HandleScope scope;
|
||||
if (args[0]->IsFunction() == false)
|
||||
return ThrowException(String::New("Must pass a class as the first argument."));
|
||||
Handle<Function> protocol_class = Handle<Function>::Cast(args[0]);
|
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new Connection(args.This(), protocol_class);
|
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new Connection(args.This());
|
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return args.This();
|
||||
}
|
||||
|
||||
|
|
@ -290,8 +290,7 @@ Connection::OnReceive (const void *buf, size_t len)
|
|||
{
|
||||
HandleScope scope;
|
||||
|
||||
Local<Object> protocol = GetProtocol();
|
||||
Handle<Value> callback_v = protocol->Get(ON_RECEIVE_SYMBOL);
|
||||
Handle<Value> callback_v = handle_->Get(ON_RECEIVE_SYMBOL);
|
||||
if (!callback_v->IsFunction()) return;
|
||||
|
||||
Handle<Function> callback = Handle<Function>::Cast(callback_v);
|
||||
|
|
@ -319,7 +318,7 @@ Connection::OnReceive (const void *buf, size_t len)
|
|||
}
|
||||
|
||||
TryCatch try_catch;
|
||||
callback->Call(protocol, argc, argv);
|
||||
callback->Call(handle_, argc, argv);
|
||||
|
||||
if (try_catch.HasCaught())
|
||||
fatal_exception(try_catch); // XXX is this the right action to take?
|
||||
|
|
@ -329,11 +328,10 @@ Connection::OnReceive (const void *buf, size_t len)
|
|||
void name () \
|
||||
{ \
|
||||
HandleScope scope; \
|
||||
Local<Object> protocol = GetProtocol(); \
|
||||
Local<Value> callback_v = protocol->Get(symbol); \
|
||||
Local<Value> callback_v = handle_->Get(symbol); \
|
||||
if (!callback_v->IsFunction()) return; \
|
||||
Handle<Function> callback = Handle<Function>::Cast(callback_v); \
|
||||
callback->Call(protocol, 0, NULL); \
|
||||
callback->Call(handle_, 0, NULL); \
|
||||
}
|
||||
|
||||
DEFINE_SIMPLE_CALLBACK(Connection::OnConnect, ON_CONNECT_SYMBOL)
|
||||
|
|
@ -360,12 +358,12 @@ Acceptor::Initialize (Handle<Object> target)
|
|||
target->Set(String::NewSymbol("Server"), constructor_template->GetFunction());
|
||||
}
|
||||
|
||||
Acceptor::Acceptor (Handle<Object> handle, Handle<Function> protocol_class, Handle<Object> options)
|
||||
Acceptor::Acceptor (Handle<Object> handle, Handle<Function> connection_handler, Handle<Object> options)
|
||||
: ObjectWrap(handle)
|
||||
{
|
||||
HandleScope scope;
|
||||
|
||||
handle_->SetHiddenValue(PROTOCOL_CLASS_SYMBOL, protocol_class);
|
||||
handle_->SetHiddenValue(CONNECTION_HANDLER_SYMBOL, connection_handler);
|
||||
|
||||
int backlog = 1024; // default value
|
||||
Local<Value> backlog_v = options->Get(String::NewSymbol("backlog"));
|
||||
|
|
@ -388,20 +386,27 @@ Acceptor::OnConnection (struct sockaddr *addr, socklen_t len)
|
|||
{
|
||||
HandleScope scope;
|
||||
|
||||
Local<Function> protocol_class = GetProtocolClass();
|
||||
if (protocol_class.IsEmpty()) {
|
||||
printf("protocol class was empty!");
|
||||
Local<Function> connection_handler = GetConnectionHandler();
|
||||
if (connection_handler.IsEmpty()) {
|
||||
printf("Connection handler was empty!");
|
||||
Close();
|
||||
return NULL;
|
||||
}
|
||||
|
||||
Handle<Value> argv[] = { protocol_class };
|
||||
Local<Object> connection_handle =
|
||||
Connection::constructor_template->GetFunction()->NewInstance(1, argv);
|
||||
Connection::constructor_template->GetFunction()->NewInstance(0, NULL);
|
||||
|
||||
Connection *connection = NODE_UNWRAP(Connection, connection_handle);
|
||||
connection->SetAcceptor(handle_);
|
||||
|
||||
Handle<Value> argv[1] = { connection_handle };
|
||||
|
||||
TryCatch try_catch;
|
||||
Local<Value> ret = connection_handler->Call(handle_, 1, argv);
|
||||
|
||||
if (ret.IsEmpty())
|
||||
fatal_exception(try_catch);
|
||||
|
||||
return connection;
|
||||
}
|
||||
|
||||
|
|
@ -413,7 +418,7 @@ Acceptor::v8New (const Arguments& args)
|
|||
if (args.Length() < 1 || args[0]->IsFunction() == false)
|
||||
return ThrowException(String::New("Must at give connection handler as the first argument"));
|
||||
|
||||
Local<Function> protocol_class = Local<Function>::Cast(args[0]);
|
||||
Local<Function> connection_handler = Local<Function>::Cast(args[0]);
|
||||
Local<Object> options;
|
||||
|
||||
if (args.Length() > 1 && args[1]->IsObject()) {
|
||||
|
|
@ -422,7 +427,7 @@ Acceptor::v8New (const Arguments& args)
|
|||
options = Object::New();
|
||||
}
|
||||
|
||||
new Acceptor(args.This(), protocol_class, options);
|
||||
new Acceptor(args.This(), connection_handler, options);
|
||||
|
||||
return args.This();
|
||||
}
|
||||
|
|
@ -468,15 +473,16 @@ Acceptor::v8Close (const Arguments& args)
|
|||
}
|
||||
|
||||
Local<v8::Function>
|
||||
Acceptor::GetProtocolClass (void)
|
||||
Acceptor::GetConnectionHandler (void)
|
||||
{
|
||||
HandleScope scope;
|
||||
|
||||
Local<Value> protocol_class_v = handle_->GetHiddenValue(PROTOCOL_CLASS_SYMBOL);
|
||||
if (protocol_class_v->IsFunction()) {
|
||||
Local<Function> protocol_class = Local<Function>::Cast(protocol_class_v);
|
||||
return scope.Close(protocol_class);
|
||||
Local<Value> connection_handler_v = handle_->GetHiddenValue(CONNECTION_HANDLER_SYMBOL);
|
||||
if (connection_handler_v->IsFunction()) {
|
||||
Local<Function> connection_handler = Local<Function>::Cast(connection_handler_v);
|
||||
return scope.Close(connection_handler);
|
||||
}
|
||||
|
||||
return Local<Function>();
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -22,8 +22,10 @@ protected:
|
|||
static v8::Handle<v8::Value> v8Close (const v8::Arguments& args);
|
||||
static v8::Handle<v8::Value> v8FullClose (const v8::Arguments& args);
|
||||
static v8::Handle<v8::Value> v8ForceClose (const v8::Arguments& args);
|
||||
static v8::Handle<v8::Value> EncodingGetter (v8::Local<v8::String> _, const v8::AccessorInfo& info);
|
||||
static void EncodingSetter (v8::Local<v8::String> _, v8::Local<v8::Value> value, const v8::AccessorInfo& info);
|
||||
|
||||
Connection (v8::Handle<v8::Object> handle, v8::Handle<v8::Function> protocol_class);
|
||||
Connection (v8::Handle<v8::Object> handle);
|
||||
virtual ~Connection ();
|
||||
|
||||
int Connect (struct addrinfo *address) { return oi_socket_connect (&socket_, address); }
|
||||
|
|
@ -105,11 +107,11 @@ protected:
|
|||
static v8::Handle<v8::Value> v8Close (const v8::Arguments& args);
|
||||
|
||||
Acceptor (v8::Handle<v8::Object> handle,
|
||||
v8::Handle<v8::Function> protocol_class,
|
||||
v8::Handle<v8::Function> connection_handler,
|
||||
v8::Handle<v8::Object> options);
|
||||
virtual ~Acceptor () { Close(); puts("acceptor gc'd!");}
|
||||
|
||||
v8::Local<v8::Function> GetProtocolClass (void);
|
||||
v8::Local<v8::Function> GetConnectionHandler (void);
|
||||
|
||||
int Listen (struct addrinfo *address) {
|
||||
int r = oi_server_listen (&server_, address);
|
||||
|
|
|
|||
|
|
@ -5,14 +5,13 @@ var N = 1000;
|
|||
var count = 0;
|
||||
|
||||
function Ponger (socket) {
|
||||
this.encoding = "UTF8";
|
||||
this.timeout = 0;
|
||||
socket.encoding = "UTF8";
|
||||
socket.timeout = 0;
|
||||
|
||||
this.onConnect = function () {
|
||||
puts("got socket.");
|
||||
};
|
||||
puts("got socket.");
|
||||
|
||||
this.onReceive = function (data) {
|
||||
socket.onReceive = function (data) {
|
||||
//puts("server recved data: " + JSON.stringify(data));
|
||||
assertTrue(count <= N);
|
||||
stdout.print("-");
|
||||
if (/PING/.exec(data)) {
|
||||
|
|
@ -20,46 +19,47 @@ function Ponger (socket) {
|
|||
}
|
||||
};
|
||||
|
||||
this.onEOF = function () {
|
||||
socket.onEOF = function () {
|
||||
puts("ponger: onEOF");
|
||||
socket.close();
|
||||
};
|
||||
|
||||
this.onDisconnect = function () {
|
||||
socket.onDisconnect = function () {
|
||||
puts("ponger: onDisconnect");
|
||||
socket.server.close();
|
||||
};
|
||||
}
|
||||
|
||||
function Pinger (socket) {
|
||||
this.encoding = "UTF8";
|
||||
|
||||
this.onConnect = function () {
|
||||
socket.send("PING");
|
||||
};
|
||||
|
||||
this.onReceive = function (data) {
|
||||
stdout.print(".");
|
||||
assertEquals("PONG", data);
|
||||
count += 1;
|
||||
if (count < N) {
|
||||
socket.send("PING");
|
||||
} else {
|
||||
puts("sending FIN");
|
||||
socket.close();
|
||||
}
|
||||
};
|
||||
|
||||
this.onEOF = function () {
|
||||
puts("pinger: onEOF");
|
||||
assertEquals(N, count);
|
||||
};
|
||||
}
|
||||
|
||||
function onLoad() {
|
||||
var server = new node.tcp.Server(Ponger);
|
||||
server.listen(port);
|
||||
|
||||
var client = new node.tcp.Connection(Pinger);
|
||||
var client = new node.tcp.Connection();
|
||||
|
||||
client.encoding = "UTF8";
|
||||
|
||||
client.onConnect = function () {
|
||||
puts("client is connected.");
|
||||
client.send("PING");
|
||||
};
|
||||
|
||||
client.onReceive = function (data) {
|
||||
//puts("client recved data: " + JSON.stringify(data));
|
||||
stdout.print(".");
|
||||
assertEquals("PONG", data);
|
||||
count += 1;
|
||||
if (count < N) {
|
||||
client.send("PING");
|
||||
} else {
|
||||
puts("sending FIN");
|
||||
client.close();
|
||||
}
|
||||
};
|
||||
|
||||
client.onEOF = function () {
|
||||
puts("pinger: onEOF");
|
||||
assertEquals(N, count);
|
||||
};
|
||||
|
||||
client.connect(port);
|
||||
}
|
||||
|
|
|
|||
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