* src/gnutls.c (gnutls_verify_boot): Refactor out into its own
function so that we can call it asynchronously.
(Fgnutls_boot): Use it.
* src/process.c (wait_reading_process_output): Verify the TLS
negotiation.
* src/gnutls.c (gnutls_try_handshake): Factor out into its own
function.
(emacs_gnutls_handshake): Use it.
(emacs_gnutls_read): Just return instead of retrying the handshake.
* src/process.c (finish_after_tls_connection): Factor out
into its own function.
(connect_network_socket): Use it.
(wait_reading_process_output): Retry TLS handshakes.
(wait_reading_process_output): Defer sentinel until TLS completes.
* src/process.c: Remove declaration/definition of dns_processes list.
* src/process.c (wait_reading_process_output): Loop over all processes in
Vprocess_alist instead of dns_processes, to check for completed DNS
requests.
* src/process.c (Fset_process_filter): Don't set the socket
masks here, because we may not have a socket yet.
(set_process_filter_masks): New function.
(connect_network_socket): Set the filter masks here.
* src/process.c (free_dns_request): Factor out into own function.
(Fdelete_process): When deleting a process, free any DNS
structures associated with it.
(check_for_dns): Always free all DNS resources.
* src/process.c (set-process-window-size): Explicitly return Qnil when
called with network processes as set_window_size won't work anyway on
socket fds. As a welcome side effect, this makes the blocking
wait_for_socket_fds call obsolete.
* src/process.c (Fmake_network_process): Set the read/write
coding systems here, so that special bindings work.
(Fmake_network_process): Complete the coding system setup here.
* lisp/net/network-stream.el (network-stream-open-tls):
Postpone NSM verification when running async.
* src/process.c (Fset_process_filter): This function doesn't
need to wait.
(connect_network_socket): Set the process status to "run" only
after TLS negotiation.
(wait_for_socket_fds): Take a name parameter for more debugging.
(wait_reading_process_output): Don't change status to "run"
unless TLS negotiation has finished.
(send_process): Wait for the process here instead of
send_process_string.
(connect_network_socket): Call the network security manager.
* src/process.c (set-process-filter, set-process-window-size,
process-contact, process-datagram-address, set-process-datagram-address,
set-network-process-option): Make functions wait (block) on network
process until pending DNS requests have been processed and associated
socket initialized.
* src/process.c (process-send-region, process-send-string,
process-send-eof): Make functions wait (block) while network process is
in connect state.
* src/process.c (conv_lisp_to_sockaddr): AF_INET6 addresses are
converted to a list of 16 bit quantities by
conv_sockaddr_to_lisp(). conv_lisp_to_sockaddr() should follow the
same scheme rather than expecting a (longer) list of 8 bit
quantities.
* doc/lispref/processes.texi (Network Processes): Mention the
dns value of :nowait.
* src/process.c (Fmake_network_process): Only do async DNS if
:nowait is `dns'.
* doc/lispref/processes.texi (Network Processes): Clarify the
meaning of :tls-parameters.
* lisp/net/gnutls.el (open-gnutls-stream): Clarify :nowait.
* lisp/net/gnutls.el (gnutls-boot-parameters): Factor out into
own function.
(gnutls-negotiate): Use it.
(open-gnutls-stream): Ditto.
* src/eval.c (vformat_string): Refactor out the printing bits
from verror.
(verror): Use it.
* src/gnutls.c (boot_error): Mark failed processes with the
real error message.
* src/lisp.h: Declare vformat_string.
* lisp/net/gnutls.el (open-gnutls-stream): Pass the TLS
keywords in directly so that they can be used when doing
synchronous DNS on non-synchronous connections.
* lisp/net/network-stream.el (open-network-stream): Allow
passing in the TLS parameters directly.
* src/process.c (conv_numerical_to_lisp): New function to convert
numerical addresses to Lisp.
(Fmake_network_process): Rework the non-HAVE_ADDRINFO code
paths so that they work again.
(syms_of_process): Build fix for non-glibc systems.
* gnutls.c (boot_error): New function to either signal an
error or return an error code.
(Fgnutls_boot): Don't signal errors when running asynchronously.
* process.h (pset_status): Move here from process.c to be
able to use from gnutls.c.
* process.c (connect_network_socket): Do the TLS boot here
when running asynchronously.
(wait_reading_process_output): Rework the dns_processes
handling for more safety.
* lisp/net/gnutls.el (open-gnutls-stream): Compute the
gnutls-boot parameters and pass them to the process object.
(gnutls-negotiate): New parameter :return-keywords that won't
connect to anything, just compute the keywords.
* lisp/url/url-http.el (url-http): Revert async TLS sentinel
hack, which is no longer necessary.
* src/gnutls.c (Fgnutls_asynchronous_parameters): Rename from
gnutls-mark-process.
* src/process.c (connect_network_socket): If we're connecting to
an asynchronous TLS socket, complete the GnuTLS boot sequence here.
* src/process.h: New parameter gnutls_async_parameters.
* doc/misc/emacs-gnutls.texi (Help For Developers): Mention
the nowait parameter.
* lisp/net/gnutls.el (open-gnutls-stream): Allow asynchronous
connections with the new nowait parameter.
* lisp/net/network-stream.el (network-stream-open-tls): Pass
on :nowait to open-gnutls-stream.
* lisp/url/url-http.el (url-http): Don't overwrite the
sentinel created by open-gnutls-stream.
* src/gnutls.c (Fgnutls_mark_process): New function.
* src/process.c (send_process): Don't write to GnuTLS sockets that
haven't been initialised yed.
* src/process.h: New slot gnutls_wait_p.
* process.c (wait_reading_process_output): Use a list of
process objects instead of looping through an array to check
for name resolution. This should be much faster.
