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2019-09-23Accept all cow_http2_machine optionsLoïc Hoguin
2019-09-23Remove 'protocol' option from connect_destination()Loïc Hoguin
It was deprecated and replaced by 'protocols' in a previous version.
2019-09-22Cancel the existing keepalive when switching protocolsLoïc Hoguin
2019-09-22Document Socks supportLoïc Hoguin
Also correct various Socks related types. This commit also adds a new gun:protocols/0 type as a simpler way of describing preferred protocols. The protocol/opts tuple is also documented. This commit also fixes an issue with the default value for the preferred protocols when using CONNECT over TLS. It was mistakenly not enabling http2 by default.
2019-09-22Add CONNECT->Socks5->HTTP testsLoïc Hoguin
Also fix the multiple TLS proxies tests from the previous commit.
2019-09-22Add more tests with two Socks5 proxiesLoïc Hoguin
We now properly support TCP across two TLS proxies, and TLS across two TCP/TLS proxies.
2019-09-22Always switch_protocolLoïc Hoguin
When doing a CONNECT from http to http or from socks to socks we may want to use different configuration options. Switching the protocol explicitly helps us achieve that. It will also signal through events that a protocol switch occurred.
2019-09-22Rework state transitions resulting from from protocol changesLoïc Hoguin
2019-09-22Improve retrieval of keepalive optionLoïc Hoguin
2019-09-22Supports going through multiple Socks proxiesLoïc Hoguin
This commit also reworks the switch_protocol command. The `P | {P, Opts}` type is used here as well. This allows us to remove the code specific to Websocket. In addition a few new protocol functions allow us to declare what's the name of the options key for the protocol and what the capabilities are with regard to keepalive.
2019-09-22Add Socks5->HTTP/2 testsLoïc Hoguin
Also consolidate the ALPN code in the tls_handshake state rather than doing it in CONNECT/Socks separately. Also improves the origin tests by sending a message once the handshake is completed instead of having timeouts.
2019-09-22Support connecting to HTTPS server via TCP Socks5Loïc Hoguin
2019-09-22Further consolidation of TLS handshakesLoïc Hoguin
2019-09-22Simplify HandshakeEventLoïc Hoguin
2019-09-22Move and merge all TLS handshakes to the main Gun codeLoïc Hoguin
There's now an initial_tls_handshake state for the initial connection with handshake, and tls_handshake state for any subsequent TLS handshakes. The Socks5 code will be able to reuse this tls_handshake state to perform its own transport switches.
2019-09-22Initial support for Socks5Loïc Hoguin
2019-09-05Implement graceful shutdownLoïc Hoguin
The graceful shutdown is implemented through a new 'closing' state. This state is entered under different circumstances depending on the protocol. The gun:shutdown/1 function is now implemented and documented. It allows shutting down the connection gracefully regardless of the current state of the connection and for all protocols. The behavior is entirely dependent on the protocol. For HTTP/1.1 the connection stays up only until after the current stream is complete; other streams are immediately canceled. For HTTP/2 a GOAWAY frame is sent and existing streams continue to be processed. The connection is closed after all streams are processed and the server's GOAWAY frame is received. For Websocket a close frame is sent. The connection is closed when receiving the server's close frame. In all cases the closing_timeout option defines how long we wait, as a maximum, before closing the connection after the graceful shutdown was started. The graceful shutdown is also initiated when the owner process goes away; when sending an HTTP/1.1 request with the connection: close header; when receiving an HTTP/1.1 response with the connection: close header; when receiving an HTTP/1.0 response without a connection header; when the server sends a GOAWAY HTTP/2 frame; or when we send or receive a Websocket close frame. Along with these changes, the gun:ws_send/2 function now accepts a list of frames as argument. Those frames may include a close frame that initiates the graceful shutdown.
2019-08-05Add flow controlLoïc Hoguin
Flow control is disabled by default. The initial flow value must be set to enable it (either for the entire connection or on a per-request basis). Flow applies to all HTTP streams as well as Websocket. HTTP/2 pushed streams receive the same value as their originating stream.
2019-07-27Fix ssl and other typesLoïc Hoguin
2019-07-27Add the retry_fun option for different backoff strategiesLoïc Hoguin
2019-07-27Postpone operations until connectedTony Han
2019-07-26Add the origin_changed eventLoïc Hoguin
2019-07-26Add the transport_changed eventLoïc Hoguin
Also test protocol_changed over CONNECT.
2019-07-26Add tls_handshake events for CONNECT through TLS proxiesLoïc Hoguin
2019-07-24Add the cancel event for local/remote stream cancellationLoïc Hoguin
2019-07-22Split domain lookup/connect/TLS handshake and add eventsLoïc Hoguin
This changes the way we connect to servers entirely. We now have three states when connecting (domain_lookup, connect and tls_handshake when applicable) and as a result three corresponding timeout options. Each state has a start/end event associated and the event data was tweaked to best match each event. Since the TLS handshake is separate, the transport_opts option was also split into two: tcp_opts and tls_opts.
2019-07-15Add Websocket frames related eventsLoïc Hoguin
2019-07-13Add ws_upgrade/protocol_changed eventsLoïc Hoguin
And ensure that Websocket triggers all the request/response events.
2019-06-02Add request_start, request_headers and request_end eventsLoïc Hoguin
2019-05-13Add the terminate eventLoïc Hoguin
2019-05-13Add the disconnect event callbackLoïc Hoguin
2019-05-08Add event_handler with init/connect_start/connect_endLoïc Hoguin
2019-04-26Add upgrade/ws tuples to gun:await/2,3,4Loïc Hoguin
2019-04-26Add specs to await functions, document error type betterLoïc Hoguin
2019-04-26Distinguish between error types in await functionsLoïc Hoguin
2019-04-26Rename owner_gone into owner_downLoïc Hoguin
2019-04-26Add the supervise option to start without supervisorLoïc Hoguin
2019-04-26No longer error out when the owner exitsLoïc Hoguin
No need to have the error repeated in the logs by the Gun process.
2019-04-25Remove explicit call to dbg:start/0Alexander Mihajlovic
This fixes a bug in `gun` when trying to open 2 connections with tracing enabled. You can recreate it like so: > application:ensure_all_started(gun). > gun:open("localhost", 80, #{trace => true}). > gun:open("localhost", 80, #{trace => true}). The second call fails with a cause clause exception. You'll observe the same exception by: > dbg:start(). > dbg:start(). Ultimately this may be a bug in OTP, but since `dbg:start/0` is undocumented I'm inclined to give it the benefit of the doubt. Regardless, since the docs[1] clearly state that calling `dbg:tracer/0` is the proper way to start the default tracer message receiver, I argue that calling `dbg:start/0` is a bug in `gun`. [1]: http://erlang.org/doc/man/dbg.html
2019-04-22Add origin_scheme checks to testsLoïc Hoguin
2019-04-22Make gun_tls_proxy work for HTTP/2 connectionsLoïc Hoguin
2019-04-19Integrate gun_tls_proxy into gun properLoïc Hoguin
Still need to add ALPN support and to wait before trying to send data on a proxied TLS connection that didn't complete its handshake.
2019-01-09Add function gun:stream_info/2Loïc Hoguin
2019-01-06Lowercase header names automatically and accept more typesLoïc Hoguin
Header names can now be provided as binary, string or atom and Gun no longer requires them to be in lowercase. The list of headers can also be provided as a map as well.
2019-01-05Don't send empty data chunksLoïc Hoguin
This was a bug in the case of HTTP/1.1 and an inconvenience in the case of HTTP/2.
2019-01-05Ensure Gun retries connecting immediatelyLoïc Hoguin
2019-01-03Update copyright yearsLoïc Hoguin
2019-01-03Consolidate origin server test helpersLoïc Hoguin
Also fixes an issue with switch_transport introduced when converting the Gun process to gen_statem.
2018-12-31Disable keepalive by default for HTTP/1.1Loïc Hoguin
This is safer as servers may reject too many extra empty lines.
2018-12-31Separate request/4,5,6 into headers/4,5 and request/5,6Loïc Hoguin
This cleaner separation gets rid of the implicit body check that was causing issues for many users. Now the body is either given explicitly or it is expected via future gun:data/3 calls.
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