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RTMP can be used for Remote Procedure Calls. RTMP maintains a persistent connection with an endpoint and allows real-time communication. Other RPC services are made asynchronously with a single client/server request/response model, so real-time communication is not necessary. 1 The protocol is being reverse engineered by the Red5 Open Source project. Wowza Media Systems has independently developed a complete set of RTMP libraries. Flex Data Services also uses RTMP. WebORB is an alternative to FDS for .NET. The default connection port for RTMP is 1935. VARIANTS As many corporate networks and home Firewalls block connections via ports and protocols they do not recognise, a commonly-used variant of RTMP is RTMPT (RTMP Tunnelled ). This protocol encapsulates the RTMP data as valid HTTP, and by default communicates on port 80. While RTMPT requires marginally higher bandwidths due to the addition of HTTP headers, the protocol can be used successfully in environments where security measures would block RTMP. A second variant of RTMP is RTMPS (RTMP ). This is RTMP tunnelled via HTTPS , with a default port of 443. RTMP SERVERS Currently, the only full implementation RTMP servers are , is done and it is available at their website. References:
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