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* move mouse handling to term
* do not use File for input just to disable buffering anyway
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a new abstraction that we derive posixstream from; hopefully with time
we can get rid of std/streams
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Originally we had several loader processes so that the loader did not
need asynchronity for loading several buffers at once. Since then, the
scope of what loader does has been reduced significantly, and with
that loader has become mostly asynchronous.
This patch finishes the above work as follows:
* We only fork a single loader process for the browser. It is a waste of
resources to do otherwise, and would have made future work on a
download manager very difficult.
* loader becomes (almost) fully async. Now the only sync part is a)
processing commands and b) waiting for clients to consume responses.
b) is a bit more problematic than a), but should not cause problems
unless some other horrible bug exists in a client. (TODO: make it
fully async.)
This gives us a noticable improvement in CSS loading speed, since all
resources can now be queried at once (even before the previous ones
are connected).
* Buffers now only get processes when the *connection* is finished. So
headers, status code, etc. are handled by the client, and the buffer
is forked when the loader starts streaming the response body.
As a result, mailcap entries can simply dup2 the first UNIX domain
socket connection as their stdin. This allows us to remove the ugly
(and slow) `canredir' hack, which required us to send file handles on
a tour accross the entire codebase.
* The "cache" has been reworked somewhat:
- Since canredir is gone, buffer-level requests usually start
in a suspended state, and are explicitly resumed only after
the client could decide whether it wants to cache the response.
- Instead of a flag on Request and the URL as the cache key,
we now use a global counter and the special `cache:' scheme.
* misc fixes: referer_from is now actually respected by buffers (not
just the pager), load info display should work slightly better, etc.
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slightly more efficient, but more importantly does not choke on NUL and
weird \r\n
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This is an ancient bug, but it got much easier to trigger with mouse
scrolling support so it's time to fix it.
(The bug itself was that since both the client and buffer ends of the
controlling stream are blocking, they could get stuck when both were
trying to send() data to the other end but the buffer was full. So now
we set the client end to non-blocking.)
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* Get rid of sostream hack
This is no longer needed, and was in fact causing loadStream to get
stuck with redirects on regular files (i.e. the common case of receiving
<file on stdin without a -T content type override).
* Unify loading from cache and stdin regular file code paths
Until now, loadFromCache was completely sync. This is not a huge
problem, but it's better to make it async *and* not have two separate
procedures for reading regular files. (In fact, loadFromCache had
*another* bug related to its output fd not being added to outputMap.)
* Extra: remove ansi2html select error handling
It was broken, because it didn't handle read events before the
error. Also unnecessary, since recvData breaks from the loop on n == 0.
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The API is horrid :( but at least it copies less.
TODO: think of a better API.
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* disallow Stream interface usage on non-blocking PosixStreams
* do not read estream of forkserver byte-by-byte (it's slow)
* do not call writeData with a zero len in formdata
* do not quote numbers in mailcap quoteFile
* remove some unused stuff
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At last all BufferSources are unified.
To achieve the same effect as the previous CLONE source type, we now
use the "fromcache" flag in Request. This *forces* the document to be
streamed from the disk; if the file no longer exists for some reason,
an error is returned (i.e. the document is not re-downloaded).
For a document to be cached, it has to be the main document of the
buffer (i.e. no additional resources requested with fetch()), and
also not an x-htmloutput HTML file (for those, the original source is
saved). The result is that toggleSource now always returns the actual
source for e.g. markdown files, not the HTML-transformed version.
Also, it is now possible to view the source of a document that is
still being downloaded.
buffer.sstream has almost been eliminated; it still exists, but only as
a pseudo-buffer to interface with EncoderStream and DecoderStream. It no
longer holds the entire source of a buffer at any point, and is cleared
as soon as the buffer is completely loaded.
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* LoaderHandle.fd is no more, we now check ostream's fd
* setBlocking converted to a PosixStream method
* SocketStream now sets fd variable
* handle sostream/fd redirection properly
* fix suspend/resume
This fixes non-HTML resource loading, mostly. However, tee is still
broken :/
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recvData is a new method for PosixStream that does less weird magic than
readData.
Also, allow duplicates in unregWrite/unregRead; it's simpler to live
with them than to prevent them.
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Yay!
Admittedly, it is not very useful in its current form, except maybe on
very slow networks.
The problem is that renderDocument is *slow*, so we only run it when
onload fails to consume all bytes from the network in a single pass.
Even then, we are guaranteed to get a FOUC, since CSS is only downloaded
in finishLoad(). Well, I think it's cool, anyway.
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* remove pointless exception -> bool conversions; usually they were
ignored anyway + exceptions are more convenient here
* add EPIPE handler to raisePosixIOError
* fix socketstream to use raisePosixIOError
* fix socketstream sendFileHandle error handling
* cgi: immediately return on file not found error
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* use signal handlers to avoid littering tmpdir with dead sockets
* add connection reset error (for socketstream)
* convert some imports to new style
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* add mailcap: works with copiousoutput, needsterminal, etc.
* add mime.types (only works with mailcap)
* refactor pipeBuffer
* remove "dispatcher"
* fix bug in directory display where baseurl would not be used
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It was overwriting our buffer, instead of appending to it...
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Also probably other fixes.
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Also, fix a bug in the
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