This adds a new member to the context creation info struct "ws_ping_pong_interval".
If nonzero, it sets the number of seconds that established ws connections are
allowed to be idle before a PING is forced to be sent. If zero (the default) then
tracking of idle connection is disabled for backwards compatibility.
Timeouts cover both the period between decision to send the ping and it being
sent (because it needs the socket to become writeable), and the period between
the ping being sent and the PONG coming back.
INFO debug logs are issues when the timeout stuff is operating.
You can test the server side by running the test server hacked to set ws_ping_pong_interval
and debug log mask of 15. Both the mirror protocol and the server-status protocol are
idle if nothing is happening and will trigger the PING / PONG testing. (You can also
test using lwsws and /etc/lwsws/conf with "ws-pingpong-secs": "20" in the global section)
For client, run the test client with -n -P 20 for 20s interval. -n stops the test client
writing using the mirror protocol, so it will be idle and trigger the PING / PONGs.
The timeout interval may be up to +10s late, as lws checks for affected connections every
10s.
Users are starting to appear with clients sending more than the default max header
content buffer of 1024... with the advent of the ah pool the old reasons for keeping this
modest no longer apply, so up it to 4096 and reduce the default pool size to 4 from 16 to
keep the overall memory usage the same.
This clears up a couple of issues with client connect.
- if CLIENT_CONNECTION_ERROR is coming, which of the many
ways the rejection may have happened is documented in the
in argument. It's still possible if it just got hung up on
in will be NULL, but now it has MANY more canned strings
describing the issue available at the callback
"getaddrinfo (ipv6) failed"
"unknown address family"
"getaddrinfo (ipv4) failed"
"set socket opts failed"
"insert wsi failed"
"lws_ssl_client_connect1 failed"
"lws_ssl_client_connect2 failed"
"Peer hung up"
"read failed"
"HS: URI missing"
"HS: Redirect code but no Location"
"HS: URI did not parse"
"HS: Redirect failed"
"HS: Server did not return 200"
"HS: OOM"
"HS: disallowed by client filter"
"HS: disallowed at ESTABLISHED"
"HS: ACCEPT missing"
"HS: ws upgrade response not 101"
"HS: UPGRADE missing"
"HS: Upgrade to something other than websocket"
"HS: CONNECTION missing"
"HS: UPGRADE malformed"
"HS: PROTOCOL malformed"
"HS: Cannot match protocol"
"HS: EXT: list too big"
"HS: EXT: failed setting defaults"
"HS: EXT: failed parsing defaults"
"HS: EXT: failed parsing options"
"HS: EXT: Rejects server options"
"HS: EXT: unknown ext"
"HS: Accept hash wrong"
"HS: Rejected by filter cb"
"HS: OOM"
"HS: SO_SNDBUF failed"
"HS: Rejected at CLIENT_ESTABLISHED"
- until now the user code did not get the new wsi that was created
in the client connection action until it returned. However the
client connection action may provoke callbacks like
CLIENT_CONNECTION_ERROR before then, if multiple client connections
are initiated it makes it unknown to user code which one the callback
applies to. The wsi is provided in the callback but it has not yet
returned from the client connect api to give that wsi to the user code.
To solve that there is a new member added to client connect info struct,
pwsi, which lets you pass a pointer to a struct wsi * in the user code
that will get filled in with the new wsi. That happens before any
callbacks could be provoked, and it is updated to NULL if the connect
action fails before returning from the client connect api.
Openssl v1.0.2 and above have support for checking the hostname
the client side connected to against the hostname on the cert the
server presented.
This enables that feature if the necessary API is available in the
openssl version, meaning the connection will fail at ssl negotiation if the
cert isn't for the requested server
It's very easy to test, add a fake entry to /etc/hosts for the server IP with
a different name, using that will fail at ssl but using the correct dns name
matching the certificate will work.
When using http/1.1+ keepalive and mounts, the relationship between
a connection and a protocol becomes dynamic. The same connection might
visit different bits of the url space served by different mounts using
different protocols.
This patch ensures protocols can cleanly manage their per-connection
allocations by using the following callbacks when the protocol changes
LWS_CALLBACK_HTTP_BIND_PROTOCOL
LWS_CALLBACK_HTTP_DROP_PROTOCOL
For example if the pss wants to malloc stuff at runtime, it should do it
in LWS_CALLBACK_HTTP_BIND_PROTOCOL or later, and clean it up in
...DROP_PROTOCOL.
Signed-off-by: Andy Green <andy@warmcat.com>
This gives protocols a way to talk to each other via per-vhost callbacks,
one per protocol (including the sender).
Signed-off-by: Andy Green <andy@warmcat.com>
This adds
- simple lws_urlencode()
- simple lws_urldecode()
- simple lws_sql_purify
Those expect the data to all be there and process it up until
the first '\0'.
There is also a larger opaque apis for handling POST_BODY urldecode. To
enable these, you need to give cmake -DLWS_WITH_STATEFUL_URLDECODE=1 (or
arrange any larger feature that relies on it sets that in CMakeLists.txt)
- stateful urldecode with parameter array
These have create / process / destroy semantics on a struct that maintains
decode state.
Stateful urldecode is capable of dealing with large POST data in multiple
POST_BODY callbacks cleanly, eg, file transfer by POST.
Stateful urldecode with parameter array wraps the above with a canned
callback that stores the urldecoded data and indexes them in a pointer
array matching an array of parameter names.
You may also pass it an optional callback when creating it, that will recieve
uploaded file content.
The test html is updated to support both urlencoded and multipart forms,
with some javascript to do clientside validation of an arbitrary 100KB
file size limit (there is no file size limit in the apis).
Signed-off-by: Andy Green <andy@warmcat.com>
Server ipv6 support disable is now controlled by vhost->options rather
than context->options, allowing it to be set per-vhost.
Signed-off-by: Andy Green <andy@warmcat.com>
Adds a convenient way to directly get the value of a URL
argument like ...?x=y&v=1, regardless of position in the
parameter list.
Signed-off-by: Andy Green <andy@warmcat.com>
