• [Build-fix] Fix link errors that started to get triggered with new build toolchains.

• [New] Timeout options:

  • --timeout-connection-period
  • --timeout-low-speed-period
  • --timeout-low-speed

• [Build-fix] The way previously-shipped waf was checking the existence of
  functions triggers a warning/error with GCC 8.1. waf is now
  up-to-date. And fragments are created in wscript to check for
  functions properly.

• [Improvement] saldl now halves chunk-size if it's between 0.5 and 1.5 of
  file-size. This is done to avoid contention in a single connection.

• [Fix] Detect non-standard "Content-Encoding: none" returned from some
  servers. This fix will not be necessary with libcurl >= 7.59. But
  distributions will not have that fix for some time.

• [New] Add ./waf configure options --default-chunk-size and --default-num-connections.
• [New] Add CLI option --get-info (valid arguments are "file-name", "file-size", and "effective-url").
• [Build] Raise minimum libcurl version required to 7.55.0.

• [Fix] Truncation options -t,--auto-trunc and -T,--smart-trunc
  were broken in v36. They are fixed in this release.

• [Improvement] When using --whole-file, it is ensured now that the no. of chunks
  (including the last one) will equal the no. of connections. That
  is, all chunks will start downloading immediately from the start.

Building saldl with GCC 7 (7.1.1 to be exact) triggers a couple of
warnings. And since -Werror is passed by default (as a way to
enforce a zero warning policy), those warnings actually manifest
as errors, causing builds to fail.

This release does not contain functional changes. It only includes one
direct, and one indirect, build fixes.

HIGHLIGHTS

• [Breaking Change] Make -H short for --custom-headers instead of --use-HEAD (36e89b3)
• [New] Add --random-order option (b937333)
• [New] Add -F/--allow-ftp-segments option (fc1911b)
• [Fix] Fix OSX El Capitan builds with Xcode 8 (e7656f2)

Compared to v33, this is a rather small release.

HIGHLIGHTS

• [fix] Fix -I/--no-remote-info. Changes in v33 caused a crash if this option was passed (b8e292c).
• [new] Implement --merge-in-order. This option forces merging chunks in order, similar to how piping to stdout works (d739fbc).
• [change] Limit reconnection delays to 32 seconds max (3729b30).

Check out git log v33..v34 for a full list of changes.

In this release, the option to download from two servers concurrently is made
possible with option --mirror-url. Consult the manual page for details.

Also in this release, support for writing to stdout was added (option --stdout).
All saldl's optimizations will work, except chunks will only be merged sequentially.
If -m/--memory-buffers are used, saldl will not create any files or write any
data to disk. Consult the manual page for more details.

Other notable changes and fixes

• [fix] Handle relative redirects correctly (b21fbfd).
• [fix] Fatally fail with any HTTP error other than 400 while getting remote info.
  400 is allowed once in case it was caused by an HTTP/2 upgrade error (d88036d).
• [fix] Fix long options --since-file-mtime and --date-cond.
  They erroneously required an extra -- at the start (c33187a).
• [new] Only enable HTTP/2 over TLS by default. --http2-upgrade to
  always try HTTP/2 [requires libcurl >= 7.47.0] (70892aa).
• [new] Implement -6/--resolve-ipv6 and -4/--resolve-ipv4 (128de2b).
• [new] Send TCP keep-alive probes every 6s, --no-tcp-keep-alive to disable (0bd1a51).

Check git log v32..v33 for a full list of changes.

Highlights

• [major] Big and breaking changes in compression/decompression options (b477928).
• [new] Implement -M/--since-file-mtime and -Y/--date-cond (3576819).
• [fix] Fall back to HTTP/1.1 if we get a 400 response. The error could be triggered by the HTTP/2 upgrade request (08f372c).