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<h3>
Tanu Kaskinen pushed to branch master
at <a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio">PulseAudio / pulseaudio</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/commit/faac387ce9f5b05c6e1d7035e2a9379266ff722e">faac387c</a></strong>
<div>
<span>by StefanBruens</span>
<i>at 2020-04-10T18:44:13+00:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">raop: Send initial timing packet to prime UDP connection tracking
In case the local UDP port is blocked by a firewall by default, send
an initial timing packet so the connection tracking will accept the
response packages.
Otherwise, the connection will fail with an 'RTSP/1.0 500 Internal
Server Error' after some timeout.
Fixes: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/issues/840
</pre>
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<h4>1 changed file:</h4>
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<li class="file-stats">
<a href="#6675336cd7b5235a2961aecf52cd594bb325a3af">
src/modules/raop/raop-client.c
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<h4>Changes:</h4>
<li id="6675336cd7b5235a2961aecf52cd594bb325a3af">
<a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/commit/faac387ce9f5b05c6e1d7035e2a9379266ff722e#6675336cd7b5235a2961aecf52cd594bb325a3af"><strong>src/modules/raop/raop-client.c</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -681,6 +681,18 @@ static size_t handle_udp_timing_packet(pa_raop_client *c, const uint8_t packet[]</td>
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<pre style="margin: 0;"> <span id="LC681" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">written</span><span class="p">;</span></span>
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<pre style="margin: 0;"> <span id="LC682" class="line" lang="c"><span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC683" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC684" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="nf" style="color: #900; font-weight: 600;">send_initial_udp_timing_packet</span><span class="p">(</span><span class="n" style="color: #333;">pa_raop_client</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">c</span><span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC685" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">data</span><span class="p">[</span><span class="mi" style="color: #099;">6</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">{</span> <span class="mi" style="color: #099;">0</span> <span class="p">};</span></span>
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<pre style="margin: 0;">+<span id="LC686" class="line" lang="c"> <span class="k" style="font-weight: 600;">struct</span> <span class="n" style="color: #333;">timeval</span> <span class="n" style="color: #333;">tv</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC687" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">uint64_t</span> <span class="n" style="color: #333;">initial_time</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC688" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC689" class="line" lang="c"> <span class="n" style="color: #333;">initial_time</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">timeval_to_ntp</span><span class="p">(</span><span class="n" style="color: #333;">pa_rtclock_get</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">tv</span><span class="p">));</span></span>
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<pre style="margin: 0;">+<span id="LC690" class="line" lang="c"> <span class="n" style="color: #333;">data</span><span class="p">[</span><span class="mi" style="color: #099;">4</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">htonl</span><span class="p">(</span><span class="n" style="color: #333;">initial_time</span> <span class="o" style="font-weight: 600;">>></span> <span class="mi" style="color: #099;">32</span><span class="p">);</span></span>
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<pre style="margin: 0;">+<span id="LC691" class="line" lang="c"> <span class="n" style="color: #333;">data</span><span class="p">[</span><span class="mi" style="color: #099;">5</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">htonl</span><span class="p">(</span><span class="n" style="color: #333;">initial_time</span> <span class="o" style="font-weight: 600;">&</span> <span class="mh" style="color: #099;">0xffffffff</span><span class="p">);</span></span>
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<pre style="margin: 0;">+<span id="LC693" class="line" lang="c"> <span class="n" style="color: #333;">send_udp_timing_packet</span><span class="p">(</span><span class="n" style="color: #333;">c</span><span class="p">,</span> <span class="n" style="color: #333;">data</span><span class="p">,</span> <span class="n" style="color: #333;">initial_time</span><span class="p">);</span></span>
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<pre style="margin: 0;">+<span id="LC694" class="line" lang="c"><span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC696" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="nf" style="color: #900; font-weight: 600;">connect_udp_socket</span><span class="p">(</span><span class="n" style="color: #333;">pa_raop_client</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">c</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">fd</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">uint16_t</span> <span class="n" style="color: #333;">port</span><span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;"> <span id="LC697" class="line" lang="c"> <span class="k" style="font-weight: 600;">struct</span> <span class="n" style="color: #333;">sockaddr_in</span> <span class="n" style="color: #333;">sa4</span><span class="p">;</span></span>
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<pre style="margin: 0;"> <span id="LC698" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#ifdef HAVE_IPV6</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1077,6 +1089,13 @@ connect_finish:</td>
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1077
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1089
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<pre style="margin: 0;"> <span id="LC1089" class="line" lang="c"></span>
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1078
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1090
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<pre style="margin: 0;"> <span id="LC1090" class="line" lang="c"> <span class="n" style="color: #333;">pa_log_debug</span><span class="p">(</span><span class="s" style="color: #d14;">"Connection established (UDP;control_port=%d;timing_port=%d)"</span><span class="p">,</span> <span class="n" style="color: #333;">cport</span><span class="p">,</span> <span class="n" style="color: #333;">tport</span><span class="p">);</span></span>
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1079
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1091
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<pre style="margin: 0;"> <span id="LC1091" class="line" lang="c"></span>
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1092
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<pre style="margin: 0;">+<span id="LC1092" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* Send an initial UDP packet so a connection tracking firewall</span></span>
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1093
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<pre style="margin: 0;">+<span id="LC1093" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * knows the src_ip:src_port <-> dest_ip:dest_port relation</span></span>
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1094
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<pre style="margin: 0;">+<span id="LC1094" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * and accepts the incoming timing packets.</span></span>
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1095
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<pre style="margin: 0;">+<span id="LC1095" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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1096
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<pre style="margin: 0;">+<span id="LC1096" class="line" lang="c"> <span class="n" style="color: #333;">send_initial_udp_timing_packet</span><span class="p">(</span><span class="n" style="color: #333;">c</span><span class="p">);</span></span>
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1097
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<pre style="margin: 0;">+<span id="LC1097" class="line" lang="c"> <span class="n" style="color: #333;">pa_log_debug</span><span class="p">(</span><span class="s" style="color: #d14;">"Sent initial timing packet to UDP port %d"</span><span class="p">,</span> <span class="n" style="color: #333;">tport</span><span class="p">);</span></span>
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1098
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<pre style="margin: 0;">+<span id="LC1098" class="line" lang="c"></span>
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1080
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1099
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<pre style="margin: 0;"> <span id="LC1099" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">c</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">state_callback</span><span class="p">)</span></span>
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1081
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1100
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<pre style="margin: 0;"> <span id="LC1100" class="line" lang="c"> <span class="n" style="color: #333;">c</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">state_callback</span><span class="p">(</span><span class="n" style="color: #333;">PA_RAOP_CONNECTED</span><span class="p">,</span> <span class="n" style="color: #333;">c</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">state_userdata</span><span class="p">);</span></span>
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1082
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1101
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<pre style="margin: 0;"> <span id="LC1101" class="line" lang="c"> <span class="p">}</span></span>
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