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2011-10-10Add support for loops in standard HTTP handlersLoïc Hoguin
Now init/3 can return one of the following values to enable loops: - {loop, Req, State} - {loop, Req, State, hibernate} - {loop, Req, State, Timeout} - {loop, Req, State, Timeout, hibernate} Returning one of these tuples will activate looping in the HTTP handler. When looping, handle/2 is never called. Instead, Cowboy will listen for Erlang messages and forward them to the info/3 function of the handler. If a timeout is defined, Cowboy will also close the connection when no message has been received for Timeout milliseconds. The info/3 function is defined as info(Msg, Req, State). It can return either of the following tuples: - {ok, Req, State} - {loop, Req, State} - {loop, Req, State, hibernate} The first one ends the connection, calling terminate/2 before closing. The others continue the loop. Loops are useful when writing long-polling handlers that need to wait and don't expect to receive anything. Therefore it is recommended to set a timeout to close the connection if nothing arrives after a while and to enable hibernate everywhere. Normal HTTP handlers shouldn't need to use this and as such info/3 was made optional.
2011-10-10Add {shutdown, Req} to websocket_init/3 to fail a websocket upgradeLoïc Hoguin
This change allows application developers to refuse websocket upgrades by returning {shutdown, Req}. The application can also send a reply with a custom error before returning from websocket_init/3, otherwise an error 400 is sent. Note that right now Cowboy closes the connection immediately. Also note that neither terminate/3 nor websocket_terminate/3 will be called when the connection is shutdown by websocket_init/3.
2011-10-06Allow HTTP handlers to skip the handle/2 step in init/3Loïc Hoguin
You can now return {shutdown, Req, State} from Handler:init/3 to skip the handle/2 step. Also allow init/3 function to send responses.
2011-10-06Merge branch 'hybi-framing-fix' of https://github.com/smarkets/cowboyLoïc Hoguin
2011-10-06Close the connection when the application sends Connection: closeLoïc Hoguin
Now Cowboy checks headers sent to the client for the 'Connection' header value, parses it, and checks whether it contains a 'close' or 'keep-alive' value. It makes sure to close or keep the connection alive depending on the value found there, if any. Also change chunked replies to not close the connection by default unless the application requests it.
2011-10-06Fix a crash in websocket_handshake when cowboy_http_req:compact/1 is usedLoïc Hoguin
Also add a call to compact/1 in the websocket test handler so we may catch bugs related to it faster later on.
2011-10-04Do not send a 408 response if the Request-Line wasn't fully receivedLoïc Hoguin
The server should not send a response if there wasn't at least the beginning of a request sent (the Request-Line).
2011-10-03Fix byte-by-byte Websocket handlingHunter Morris
If the websocket frame handling code in cowboy_http_websocket receives only 1 byte at a time, it fails with a badmatch in cowboy_http_websocket:websocket_data/4. This commit fixes the problem and introduces a test of the correct behaviour.
2011-09-22Add a test for websocket hibernate + timeout and fix this use caseLoïc Hoguin
The issue was that we were calling erlang:hibernate before a receive .. after .. end call. Erlang hibernates the process before reaching the receive instruction and we therefore couldn't enter the after clause when hibernating. This is now fixed by using erlang:send_after instead and receiving that message instead of using an after clause.
2011-09-14'Host' header is optional in HTTP/1.0Loïc Hoguin
Krishnamurthy, Kristol, Mogul: "Key Differences between HTTP/1.0 and HTTP/1.1", "Internet address conservation". http://www8.org/w8-papers/5c-protocols/key/key.html Fixes issue #35 reported by Alex Kropivny.
2011-09-13Reset the max number of empty lines between keepalive requestsLoïc Hoguin
Fixes issue #47.
2011-08-23Add WebSocket drafts 7, 8, 9 and 10 implementationLoïc Hoguin
The implementation is only partial for now but should work for all browsers implementing it.
2011-07-26Add a PropEr test for cowboy_dispatcher:split_host/1Loïc Hoguin
Mostly thanks to Magnus Klaar as it took me a while to figure out how PropEr tests had to be written.
2011-07-19Separate message and packet handling for websocketsLoïc Hoguin
Improves the readability of websocket handler code by having two functions: websocket_handle/3 handles the packets received from the socket, removing the tuple construct that was otherwise needed, so only websocket_handle(Data, Req, State) is needed now; websocket_info/3 handles the messages that the websocket handler process received, as websocket_info(Info, Req, State). Both functions return values are handled identically by Cowboy so nothing changes on that end.
2011-06-27do not send ports 80 and 443 - browsers get madSteven Gravell
Browsers get mad that the returned location address is not the same as what they sent, since the :(80|443) is stripped. Add a simple eunit test due to existing ct websockets tests not covering this case.
2011-05-08Add chunked reply support.Loïc Hoguin
Send the status line and headers using cowboy_http_req:chunked_reply/3, and individual chunks with cowboy_http_req:chunk/2.
2011-05-05Add headers_huge test, demonstrating issue #3 is fixed.Loïc Hoguin
The previous commit switching to raw recv + erlang:decode_packet/3 works around the OTP bug regarding headers size in http recv.
2011-05-05Switch the HTTP protocol to use binary packets instead of lists.Loïc Hoguin
The server now does a single recv (or more, but only if needed) which is then sent to erlang:decode_packet/3 multiple times. Since most requests are smaller than the default MTU on many platforms, we benefit from this greatly. In the case of requests with a body, the server usually read at least part of the body on the first recv. This is bufferized properly and used when later retrieving the body. In the case of pipelined requests, we can end up reading many requests in a single recv, which are then handled properly using only the buffer containing the received data.
2011-05-04Add cowboy_http_req:port/1.Loïc Hoguin
Returns the port given in the Host header if present, otherwise the default port of 443 for HTTPS and 80 for HTTP is returned.
2011-04-17ct: Throw garbage at the server then check if it's still up.Loïc Hoguin
Basically: cat /dev/urandom | nc host port Only run this test if cat and nc are available.
2011-04-14Initial draft-hixie-thewebsocketprotocol-76 support.Loïc Hoguin
2011-04-14Fix a bug where dupe headers were sent in cowboy_http_req:reply/4.Loïc Hoguin
Now the server defines default headers that can be overwritten by the handler simply by passing them to the reply/4 function. Default headers include, for now, Connection and Content-Length headers. Note that it isn't enough to change the Connection header to close a keep-alive connection server-side.
2011-04-10ct: Add a test for requests pipelining.Loïc Hoguin
2011-04-09ct: Add a test for \n which throws an error 400.Loïc Hoguin
2011-04-09Limit the number of empty lines to allow before the request-line.Loïc Hoguin
Defaults to 5. Prevents someone from indefinitely sending empty lines.
2011-04-09ct: Add tests for incomplete requests leading to a timeout.Loïc Hoguin
2011-04-09ct: Add raw tests to check that errors are properly handled.Loïc Hoguin
2011-04-08Initial work on a ct test suite for the HTTP protocol.Loïc Hoguin
Handles two basic tests for both HTTP and HTTPS. Also renames 'make test' into 'make tests'.