blocks|key|2994075|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2994076|它可以使用这两种方法。默认情况下，优先考虑UDP，但根据连接UDP的对等设备之间的防火墙，可能只能使用TCP进行连接。您可以使用Wireshark捕获数据包，并验证使用的是TCP还是UDP。在Chrome中，你还可以通过进入chrome://webrtc-internals.|ordered-list-item|offset|length|style|CODE|2994077|"Reliability模式来查看所选候选者(googActiveConnection)的详细信息“可能是指DataChannel的可靠性模式，可以配置为在可靠或不可靠模式下运行。DTLS是指当前可选的、但交换加密密钥的soon+to+be+default+method+(另一种不推荐使用的模式是SDES)。火狐只支持DTLS，所以对于浏览器互操作，你目前需要enable+it+in+Chrome.|2994078|The+RTCPeerConnection+(媒体)将使用TCP或UDP，而DataChannel使用SCTP。Firefox使用的SCTP实现是在UDP之上实现的：https://code.google.com/p/sctp-refimpl/.|2994079|It's可以在使用addIceCandidate添加它们之前过滤掉TCP或UDP+ICE候选。通常，您不应该尝试强制使用传输，因为WebRTC只会“做正确的事情”。浏览器不会限制WebRTC使用的TCP连接数超过RTCPeerConnection或DataChannel上的任何限制(即，如果您可以有10个PeerConnections，则它们每个都可以使用TCP而不会出现任何问题)。|2994080|2994081|entityMap|0|LINK|mutability|MUTABLE|url|http://www.wireshark.org/|1|http://www.w3.org/TR/2013/WD-webrtc-20130910/#rtcdatachannel|2|http://blog.vline.com/post/57544771647/webrtc-digest-week-of-7-29-ietf-berlin-and-vp8|3|http://www.webrtc.org/interop|4|https://code.google.com/p/sctp-refimpl/|5|http://www.w3.org/TR/2013/WD-webrtc-20130910/#widl-RTCPeerConnection-addIceCandidate-void-RTCIceCandidate-candidate-VoidFunction-successCallback-RTCPeerConnectionErrorCallback-failureCallback^0|0|34|P|1S|9|0|0|N|K|1I|B|1|32|P|2|51|J|3|0|2B|13|4|0|9|F|9|F|5|0|0^^$0|@$1|2|3|-4|4|5|6|16|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|17|7|@$D|18|E|19|F|G]]|8|@$D|1A|E|1B|1|1C]]|9|$]]|$1|H|3|I|4|C|6|1D|7|@$D|1E|E|1F|F|G]]|8|@$D|1G|E|1H|1|1I]|$D|1J|E|1K|1|1L]|$D|1M|E|1N|1|1O]]|9|$]]|$1|J|3|K|4|C|6|1P|7|@]|8|@$D|1Q|E|1R|1|1S]]|9|$]]|$1|L|3|M|4|C|6|1T|7|@$D|1U|E|1V|F|G]]|8|@$D|1W|E|1X|1|1Y]]|9|$]]|$1|N|3|-4|4|5|6|1Z|7|@]|8|@]|9|$]]|$1|O|3|-4|4|5|6|20|7|@]|8|@]|9|$]]]|P|$Q|$4|R|S|T|9|$U|V]]|W|$4|R|S|T|9|$U|X]]|Y|$4|R|S|T|9|$U|Z]]|10|$4|R|S|T|9|$U|11]]|12|$4|R|S|T|9|$U|13]]|14|$4|R|S|T|9|$U|15]]]]

<ol>
<li>It can use either. By default, preference is given to UDP, but depending on the firewall(s) in between the peers connecting it may only be able to connect with TCP. You can use <a href="http://www.wireshark.org/">Wireshark</a> to capture packets and verify whether TCP or UDP is being used. In Chrome you can also see details on the selected candidate (<code>googActiveConnection</code>) by going to <code>chrome://webrtc-internals</code>.</li>
<li>"Reliability mode" probably refers to the reliability mode of the <a href="http://www.w3.org/TR/2013/WD-webrtc-20130910/#rtcdatachannel">DataChannel</a>, which can be configured to run in reliable or unreliable mode. DTLS refers to the currently optional, but <a href="http://blog.vline.com/post/57544771647/webrtc-digest-week-of-7-29-ietf-berlin-and-vp8">soon to be default method</a> of exchanging encryption keys (the other deprecated mode is SDES). Firefox only supports DTLS, so for browser interop, you'll currently need to <a href="http://www.webrtc.org/interop">enable it in Chrome</a>.</li>
<li>The RTCPeerConnection (media) will use TCP or UDP, while the DataChannel uses SCTP. The SCTP implementation used by Firefox is implemented on top of UDP: <a href="https://code.google.com/p/sctp-refimpl/">https://code.google.com/p/sctp-refimpl/</a>.</li>
<li>It's possible to filter out TCP or UDP ICE candidates before adding them with <a href="http://www.w3.org/TR/2013/WD-webrtc-20130910/#widl-RTCPeerConnection-addIceCandidate-void-RTCIceCandidate-candidate-VoidFunction-successCallback-RTCPeerConnectionErrorCallback-failureCallback"><code>addIceCandidate</code></a>. Generally, you should not try to force the transport used since WebRTC will just "do the right thing". The browser does not limit the number of TCP connections used by WebRTC beyond any limit on the RTCPeerConnection or DataChannel (i.e., if you can have 10 PeerConnections, they can each use TCP without any problem).</li>
</ol>

This sounds like a very basic question, but I need a confirmation

<ol>
<li>Does WebRTC use TCP or UDP as its peer-to-peer transport? How do I
know ?</li>
<li>I read that there are reliability mode and DTLS agreement, how does
they affect?</li>
<li>Is this transport the same for both Media and DataChannel?</li>
<li>How do I switch between TCP and UDP?</li>
</ol>

I ask this because I know that browsers have a limit on the number of parallel connections (I think they talk about TCP), and maybe UDP connection is not limited.

Does WebRTC use TCP or UDP?

防火墙

这听起来像是一个非常基本的问题，但我需要一个确认 WebRTC是否使用TCP或UDP作为其对等传输？我怎么知道? TCP 我读到有可靠性模式和DTLS协议，它们会有什么影响?TCP和DataChannel?How的传输方式是否相同？是否要在和之间切换？我之所以问这个问题，是因为我知道浏览器对并行连接的数量有限制(我想他...

问WebRTC使用TCP还是UDP？
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问WebRTC使用TCP还是UDP？EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问WebRTC使用TCP还是UDP？
EN