Without <limits.h>, INT_MAX is not defined.

diff --git a/transport.hxx b/transport.hxx
index 35a57a7..838add6 100644
--- a/transport.hxx
+++ b/transport.hxx
@@ -11,6 +11,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
+#include <limits.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
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<div class='path'>path: <a href='/guix/log/?id=1bfe5c274f8f1fedaad1b3690c7e0a14bb380e89'>root</a>/<a href='/guix/log/gnu?id=1bfe5c274f8f1fedaad1b3690c7e0a14bb380e89'>gnu</a>/<a href='/guix/log/gnu/system?id=1bfe5c274f8f1fedaad1b3690c7e0a14bb380e89'>system</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/system?id=1bfe5c274f8f1fedaad1b3690c7e0a14bb380e89&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-05-18 16:37:18 +0200'>2021-05-18</span></td><td><a href='/guix/commit/gnu/system?id=5fa46ca96da90ec19e32cc4d726f099d0979d60b'>Revert "vm: Autoload (gnu build vm)."</a><span class='msg-avail'>...<span class='msg-tooltip'>This reverts commit a67c00f4f7ee0a70fce14a7e1907cce332c85813 in an
attempt to fix &lt;http://issues.guix.gnu.org/48496&gt;.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-05-17 23:59:58 +0200'>2021-05-17</span></td><td><a href='/guix/commit/gnu/system?id=c2b183e13d7bcd36cc62253add436eb2946abe4e'>vm: Remove unused imports.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/vm.scm (gnu): Remove unused imports.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-05-17 23:59:58 +0200'>2021-05-17</span></td><td><a href='/guix/commit/gnu/system?id=a67c00f4f7ee0a70fce14a7e1907cce332c85813'>vm: Autoload (gnu build vm).</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/vm.scm: Autoload (gnu build vm), which was pulling in (sqlite3).
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-05-10 10:18:19 -0400'>2021-05-10</span></td><td><a href='/guix/commit/gnu/system?id=945ad48cd8029fa77a643e00c7fd350e98cacca0'>system: vm-image.tmpl: Add a crutch to allow refreshing the resolution.</a><span class='msg-avail'>...<span class='msg-tooltip'>Inspired by
https://github.com/jollheef/appvm/commit/1270b2e209bc002e69bbe6351ad5b04b7facfcc8.
The price to pay is about 5% of a CPU core usage in the guest in the worst
scenario.

* gnu/system/examples/vm-image.tmpl
(auto-update-resolution-crutch): New mcron job.
[services]: Extend the mcron-service with it.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-05-06 16:51:49 -0400'>2021-05-06</span></td><td><a href='/guix/commit/gnu/system?id=3ab48ed6cd4b1f87a4c339b172dd8a107478654c'>gnu: system: Add SPICE capability to the VM image.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/examples/vm-image.tmpl (services)
[spice-vdagent-service-type]: Add service.
[slim-service-type] &lt;xorg-configuration&gt;: Add the xf86-video-qxl module.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-05-04 14:19:11 +0200'>2021-05-04</span></td><td><a href='/guix/commit/gnu/system?id=2e4808465d7ea5cbff0486a515cd67e3370877ce'>locale: Remove glibc 2.29 from '%default-locale-libcs'.</a><span class='msg-avail'>...<span class='msg-tooltip'>Having 2.29 is most likely no longer justified.  Removing it reduces the
closure size returned by:

  guix size $(guix system build gnu/system/install.scm)

from 1.6G to 1.5G.

* gnu/system/locale.scm (%default-locale-libcs): Remove GLIBC-2.29.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-04-12 14:12:49 +0200'>2021-04-12</span></td><td><a href='/guix/commit/gnu/system?id=98bf60bf4ffa14a111bce5265a6299c1bcfd8351'>system: vm: Add a memory-size argument to system-docker-image.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/vm.scm (system-docker-image): Add a memory-size argument and pass
it to expression-&gt;derivation-in-linux-vm.
</span></span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2021-04-08 15:12:01 -0400'>2021-04-08</span></td><td><a href='/guix/commit/gnu/system?id=bdc96f6e0e7fbf502f368d3381297ec0b75216d7'>system: vm: Set a larger value for the msize option of the 9p file system.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://issues.guix.gnu.org/47225&gt;.

* gnu/system/vm.scm (%default-msize-value): New variable.
(%linux-vm-file-systems): Use it as the value of the msize option.
(mapping-&gt;file-system): Likewise.

Reported-by: Leo Famulari &lt;leo@famulari.name&gt;
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-02-25 11:29:35 +0100'>2021-02-25</span></td><td><a href='/guix/commit/gnu/system?id=60fd4118f7f01ac88bae1b44811afb34ea565685'>system: vm: Use Guile 3.0 in Docker images.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/system/vm.scm (system-docker-image): Use GUILE-3.0.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-02-22 20:44:58 +0000'>2021-02-22</span></td><td><a href='/guix/commit/gnu/system?id=7c5e5e0e0fbf11ebaaeb8f98ed6c75289ca31795'>system: hurd: Have the static networking provision 'networking.</a><span class='msg-avail'>...<span class='msg-tooltip'>Some services require networking, I'm looking at the Guix Build Coordinator
agent.  Networking seems to work in the childhurd VM, so I think this change
makes sense.

* gnu/system/hurd.scm (%base-services/hurd): Add 'networking to the provision
parameter for the static-networking service.
</span></span></td><td>Christopher Baines</td></tr>