36 lines
987 B
Go
36 lines
987 B
Go
package rtmp
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import (
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"io"
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"net"
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"time"
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"encoding/binary"
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)
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// see adobe specs for RTMP
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func DoHandshake(conn net.Conn) (hs_success bool) {
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C0C1C2 := make([]byte, 1536*2 + 1)
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S0S1S2 := make([]byte, 1536*2 + 1)
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S0S1S2[0] = 3
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binary.BigEndian.PutUint32(S0S1S2[1:1+4], uint32(time.Now().UnixMilli()))
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// force handshake to finish in under 15 seconds (aribtrary) or throw an error
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conn.SetDeadline(time.Now().Add(15 * time.Second))
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if _, err := io.ReadFull(conn, C0C1C2[:1+1536]); err != nil || C0C1C2[0] != 3 {
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return
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}
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copy(C0C1C2[1:1536], S0S1S2[1+1536:])
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binary.BigEndian.PutUint32(S0S1S2[1+1536+4:1+1536+8], uint32(time.Now().UnixMilli()))
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if _, err := conn.Write(S0S1S2); err != nil { // specs say only send S0S1 and wait for C2 before sending S2, obs doesn't care apparently
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return
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}
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if _, err := io.ReadFull(conn, C0C1C2[1+1536:]); err != nil {
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return
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}
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hs_success = true
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conn.SetDeadline(time.Time{}) // remove deadline for next function
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return
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}
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