34 lines
1.4 KiB
Markdown
34 lines
1.4 KiB
Markdown
---
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title: RTMP Handshake
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sidebar_label: RTMP Handshake
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hide_title: false
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hide_table_of_contents: false
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---
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# RTMP Handshake
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The rtmp specification 1.0 defines the RTMP handshake:
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* c0/s0: 1 bytes, specifies the protocol is RTMP or RTMPE/RTMPS.
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* c1/s1: 1536 bytes, first 4 bytes is time, next 4 bytes is 0x00, 1528 random bytes.
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* c2/s2: 1536 bytes, first 4 bytes is time echo, next 4 bytes is time, 1528 bytes c2==s1 and s2==c1.
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This is the simple handshake, the standard handshake, and the FMLE use this handshake.
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While the server connected by flash player only support simple handshake, the flash player can only play the vp6 codec, and do not support h.264+aac. Adobe changed the simple handshake to encrypted complex handshake, see: [Changed Handshake of RTMP](http://blog.csdn.net/win_lin/article/details/13006803)
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The handshake summary: |
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| Handshake | Depends | Player | Client | SRS | Use Scenario |
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| ---- | ----- | --------------------- | -------- | --- | ---- |
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| Simple<br/>Standard | No | vp6+mp3/speex | All | Supprted | Encoder, for examle, FMLE, FFMPEG |
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| Complex | openssl | vp6+mp3/speex<br/>h264+aac | Flash | Supported | Flash player requires complex handshake to play h.264+aac codec. |
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Player(Flash palyer): The supported codec for flash player.
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Notes: When compile SRS with SSL, SRS will try complex, then simple.
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Winlin 2014.10
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