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try recover from block in update loop

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Kay Marquardt (Gnadelwartz) 2020-12-14 14:00:23 +01:00
parent 3496a21d62
commit 3c1ea93168
6 changed files with 50 additions and 29 deletions
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26
README.html
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@ -331,15 +331,16 @@ It features background tasks and interactive chats, and can serve as an interfac
<div class="sourceCode" id="cb5"><pre class="sourceCode bash"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="co"># very simple</span></span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> <span class="st">&quot;text with variables. PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></span>
<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a> <span class="bu">printf</span> <span class="st">&#39;%s\n&#39;</span> <span class="st">&quot;text with variables. PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></span>
<span id="cb5-4"><a href="#cb5-4" aria-hidden="true" tabindex="-1"></a> <span class="ex">-</span><span class="op">&gt;</span> text with variables. PWD=/home/xxx</span>
<span id="cb5-5"><a href="#cb5-5" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb5-6"><a href="#cb5-6" aria-hidden="true" tabindex="-1"></a> <span class="co"># more advanced</span></span>
<span id="cb5-7"><a href="#cb5-7" aria-hidden="true" tabindex="-1"></a> <span class="va">FLOAT=</span><span class="st">&quot;1.2346777892864&quot;</span> <span class="va">INTEGER=</span><span class="st">&quot;12345.123&quot;</span></span>
<span id="cb5-8"><a href="#cb5-8" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> <span class="st">&quot;text with variabeles. float=</span><span class="va">$FLOAT</span><span class="st">, integer=</span><span class="va">$INTEGER</span><span class="st">, PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></span>
<span id="cb5-9"><a href="#cb5-9" aria-hidden="true" tabindex="-1"></a> <span class="ex">-</span><span class="op">&gt;</span>text with variables. float=1.2346777892864, integer=12345.123, PWD=/home/xxx</span>
<span id="cb5-10"><a href="#cb5-10" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb5-11"><a href="#cb5-11" aria-hidden="true" tabindex="-1"></a> <span class="bu">printf</span> <span class="st">&quot;text with variables. float=%.2f, integer=%d, PWD=%s\n&quot;</span> <span class="st">&quot;&quot;</span> <span class="st">&quot;</span><span class="va">$INTEGER</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$PWD</span><span class="st">&quot;</span></span>
<span id="cb5-12"><a href="#cb5-12" aria-hidden="true" tabindex="-1"></a> <span class="ex">-</span><span class="op">&gt;</span>text with variables. float=1.23, integer=12345, PWD=/home/xxx</span></code></pre></div>
<span id="cb5-4"><a href="#cb5-4" aria-hidden="true" tabindex="-1"></a> <span class="bu">printf</span> <span class="st">&#39;text with variables. PWD=%s\n&#39;</span> <span class="st">&quot;</span><span class="va">$PWD</span><span class="st">&quot;</span></span>
<span id="cb5-5"><a href="#cb5-5" aria-hidden="true" tabindex="-1"></a> <span class="ex">-</span><span class="op">&gt;</span> text with variables. PWD=/home/xxx</span>
<span id="cb5-6"><a href="#cb5-6" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb5-7"><a href="#cb5-7" aria-hidden="true" tabindex="-1"></a> <span class="co"># more advanced</span></span>
<span id="cb5-8"><a href="#cb5-8" aria-hidden="true" tabindex="-1"></a> <span class="va">FLOAT=</span><span class="st">&quot;1.2346777892864&quot;</span> <span class="va">INTEGER=</span><span class="st">&quot;12345.123&quot;</span></span>
<span id="cb5-9"><a href="#cb5-9" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> <span class="st">&quot;float=</span><span class="va">$FLOAT</span><span class="st">, integer=</span><span class="va">$INTEGER</span><span class="st">, PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></span>
<span id="cb5-10"><a href="#cb5-10" aria-hidden="true" tabindex="-1"></a> <span class="ex">-</span><span class="op">&gt;</span> float=1.2346777892864, integer=12345.123, PWD=/home/xxx</span>
<span id="cb5-11"><a href="#cb5-11" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb5-12"><a href="#cb5-12" aria-hidden="true" tabindex="-1"></a> <span class="bu">printf</span> <span class="st">&quot;text with variables. float=%.2f, integer=%d, PWD=%s\n&quot;</span> <span class="st">&quot;</span><span class="va">$FLOAT</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$INTEGER</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$PWD</span><span class="st">&quot;</span></span>
<span id="cb5-13"><a href="#cb5-13" aria-hidden="true" tabindex="-1"></a> <span class="ex">-</span><span class="op">&gt;</span> float=1.23, integer=12345, PWD=/home/xxx</span></code></pre></div>
<h3>Do not use #!/usr/bin/env bash</h3>
<p><strong>We stay with /bin/bash shebang, because it's more save from security perspective.</strong></p>
<p>Use of a fixed path to the system provided bash makes it harder for attackers or users to place alternative versions of bash and avoids using a possibly broken, mangled or compromised bash executable.</p>
@ -386,7 +387,10 @@ It features background tasks and interactive chats, and can serve as an interfac
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a><span class="co">#curl: (28) Connection timed out after 10001 milliseconds</span></span>
<span id="cb7-3"><a href="#cb7-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb7-4"><a href="#cb7-4" aria-hidden="true" tabindex="-1"></a><span class="fu">wget</span> <span class="at">-t</span> 1 <span class="at">-T</span> 10 https://api.telegram.org/bot</span>
<span id="cb7-5"><a href="#cb7-5" aria-hidden="true" tabindex="-1"></a><span class="co">#Connecting to api.telegram.org (api.telegram.org)|46.38.243.234|:443... failed: Connection timed out.</span></span></code></pre></div>
<span id="cb7-5"><a href="#cb7-5" aria-hidden="true" tabindex="-1"></a><span class="co">#Connecting to api.telegram.org (api.telegram.org)|46.38.243.234|:443... failed: Connection timed out.</span></span>
<span id="cb7-6"><a href="#cb7-6" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb7-7"><a href="#cb7-7" aria-hidden="true" tabindex="-1"></a><span class="ex">nc</span> <span class="at">-w</span> 2 api.telegram.org 443 <span class="kw">||</span> <span class="bu">echo</span> <span class="st">&quot;your IP seems blocked by telegram&quot;</span></span>
<span id="cb7-8"><a href="#cb7-8" aria-hidden="true" tabindex="-1"></a><span class="co">#your IP seems blocked by telegram</span></span></code></pre></div>
<p>Since Version 0.96 bashbot offers the option to recover from broken connections (aka blocked). Therefore you can provide a function named <code>bashbotBlockRecover()</code> in <code>mycommands.sh</code>. If the function exists it is called every time when a broken connection is detected.</p>
<p>Possible actions are: Check if network is working, change IP-Adress or simply wait some time.</p>
<p>If everything seems OK return 0 for retry or any non 0 value to give up.</p>
@ -400,6 +404,6 @@ It features background tasks and interactive chats, and can serve as an interfac
<p>@Gnadelwartz</p>
<h2>That's it all guys!</h2>
<p>If you feel that there's something missing or if you found a bug, feel free to submit a pull request!</p>
<h4>$$VERSION$$ v1.2-0-gc50499c</h4>
<h4>$$VERSION$$ v1.2-dev2-15-g3496a21</h4>
</body>
</html>

14
README.md
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@ -152,15 +152,16 @@ you shouldn't use echo to display it. [Use printf whenever possible](https://uni
# very simple
echo "text with variables. PWD=$PWD"
printf '%s\n' "text with variables. PWD=$PWD"
printf 'text with variables. PWD=%s\n' "$PWD"
-> text with variables. PWD=/home/xxx
# more advanced
FLOAT="1.2346777892864" INTEGER="12345.123"
echo "text with variabeles. float=$FLOAT, integer=$INTEGER, PWD=$PWD"
->text with variables. float=1.2346777892864, integer=12345.123, PWD=/home/xxx
echo "float=$FLOAT, integer=$INTEGER, PWD=$PWD"
-> float=1.2346777892864, integer=12345.123, PWD=/home/xxx
printf "text with variables. float=%.2f, integer=%d, PWD=%s\n" "" "$INTEGER" "$PWD"
->text with variables. float=1.23, integer=12345, PWD=/home/xxx
printf "text with variables. float=%.2f, integer=%d, PWD=%s\n" "$FLOAT" "$INTEGER" "$PWD"
-> float=1.23, integer=12345, PWD=/home/xxx
```
### Do not use #!/usr/bin/env bash
@ -238,6 +239,9 @@ curl -m 10 https://api.telegram.org/bot
wget -t 1 -T 10 https://api.telegram.org/bot
#Connecting to api.telegram.org (api.telegram.org)|46.38.243.234|:443... failed: Connection timed out.
nc -w 2 api.telegram.org 443 || echo "your IP seems blocked by telegram"
#your IP seems blocked by telegram
```
Since Version 0.96 bashbot offers the option to recover from broken connections (aka blocked). Therefore you can provide a function
@ -265,4 +269,4 @@ bashbotBlockRecover() {
If you feel that there's something missing or if you found a bug, feel free to submit a pull request!
#### $$VERSION$$ v1.2-0-gc50499c
#### $$VERSION$$ v1.2-dev2-15-g3496a21

16
README.txt
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@ -204,16 +204,17 @@ possible](https://unix.stackexchange.com/a/6581)
# very simple
echo "text with variables. PWD=$PWD"
printf '%s\n' "text with variables. PWD=$PWD"
printf 'text with variables. PWD=%s\n' "$PWD"
-> text with variables. PWD=/home/xxx
# more advanced
FLOAT="1.2346777892864" INTEGER="12345.123"
echo "text with variabeles. float=$FLOAT, integer=$INTEGER, PWD=$PWD"
->text with variables. float=1.2346777892864, integer=12345.123, PWD=/home/xxx
echo "float=$FLOAT, integer=$INTEGER, PWD=$PWD"
-> float=1.2346777892864, integer=12345.123, PWD=/home/xxx
printf "text with variables. float=%.2f, integer=%d, PWD=%s\n" "" "$INTEGER"
"$PWD"
->text with variables. float=1.23, integer=12345, PWD=/home/xxx
printf "text with variables. float=%.2f, integer=%d, PWD=%s\n" "$FLOAT"
"$INTEGER" "$PWD"
-> float=1.23, integer=12345, PWD=/home/xxx
```
### Do not use #!/usr/bin/env bash
@ -323,6 +324,9 @@ curl -m 10 https://api.telegram.org/bot
wget -t 1 -T 10 https://api.telegram.org/bot
#Connecting to api.telegram.org (api.telegram.org)|46.38.243.234|:443...
failed: Connection timed out.
nc -w 2 api.telegram.org 443 || echo "your IP seems blocked by telegram"
#your IP seems blocked by telegram
```
Since Version 0.96 bashbot offers the option to recover from broken connections
@ -355,4 +359,4 @@ wait
If you feel that there's something missing or if you found a bug, feel free to
submit a pull request!
#### $$VERSION$$ v1.2-0-gc50499c
#### $$VERSION$$ v1.2-dev2-15-g3496a21

13
bashbot.sh
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@ -11,7 +11,7 @@
# This file is public domain in the USA and all free countries.
# Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
#
#### $$VERSION$$ v1.2-dev2-5-gda7a3f1
#### $$VERSION$$ v1.2-dev2-15-g3496a21
#
# Exit Codes:
# - 0 success (hopefully)
@ -1055,8 +1055,15 @@ start_bot() {
else
# oops, something bad happened, wait maxsleep*10
(( nextsleep=nextsleep*2 , nextsleep= nextsleep>maxsleep*10 ?maxsleep*10:nextsleep ))
[ "${OFFSET}" = "-999" ] &&\
log_error "Repeated timeout/broken/no connection on telegram update, sleep $(_round_float "${nextsleep}e-3")s"
# second time, report problem
if [ "${OFFSET}" = "-999" ]; then
log_error "Repeated timeout/broken/no connection on telegram update, sleep $(_round_float "${nextsleep}e-3")s"
# try to recover
if _is_function bashbotBlockRecover && [ -z "$(getJson "${ME_URL}")" ]; then
log_error "Try to recover, calling bashbotBlockRecover ..."
bashbotBlockRecover
fi
fi
OFFSET="-999"
fi
done

4
doc/6_reference.md
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@ -223,7 +223,7 @@ send_inline_keyboard "${CHAT[ID]}" "" '[{"text":"b 1", url"":"u 1"}, {"text":"b
### Edit / Replace Messages
Edit a message means replace the content of the message in place. The message stay on the same position in the chat ank keep the same
Edit a message means replace the content of the message in place. The message stay on the same position in the chat and keep the same
message id.
There is no need to use the same format when replace a message, e.g. a message sent with `send_normal_message` can be replaced with
@ -1143,5 +1143,5 @@ The name of your bot is available as bash variable "$ME", there is no need to ca
#### [Prev Best Practice](5_practice.md)
#### [Next Notes for Developers](7_develop.md)
#### $$VERSION$$ v1.2-dev2-14-g78ddc1f
#### $$VERSION$$ v1.2-dev2-15-g3496a21

6
mycommands.sh
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@ -9,7 +9,7 @@
# #### mycommands.clean
#
# shellcheck disable=SC1117
#### $$VERSION$$ v1.2-dev2-5-gda7a3f1
#### $$VERSION$$ v1.2-dev2-15-g3496a21
#
# uncomment the following lines to overwrite info and help messages
@ -285,7 +285,9 @@ else
# return 0 to retry, return non 0 to give up
bashbotBlockRecover() {
# place your commands to unblock here, e.g. change IP or simply wait
sleep 60 && return 0 # may be temporary
sleep 60 # may be temporary
# check connection working
[ -n "$(getJson "${ME_URL}")" ] && return 0
return 1
}