mirror of https://gitee.com/IrisVega/frp.git
56 lines
1.0 KiB
Go
56 lines
1.0 KiB
Go
package mux
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type MatchFunc func(data []byte) (match bool)
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var (
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HttpsNeedBytesNum uint32 = 1
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HttpNeedBytesNum uint32 = 3
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YamuxNeedBytesNum uint32 = 2
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)
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var HttpsMatchFunc MatchFunc = func(data []byte) bool {
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if len(data) < int(HttpsNeedBytesNum) {
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return false
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}
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if data[0] == 0x16 {
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return true
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} else {
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return false
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}
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}
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// From https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods
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var httpHeadBytes = map[string]struct{}{
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"GET": struct{}{},
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"HEA": struct{}{},
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"POS": struct{}{},
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"PUT": struct{}{},
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"DEL": struct{}{},
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"CON": struct{}{},
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"OPT": struct{}{},
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"TRA": struct{}{},
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"PAT": struct{}{},
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}
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var HttpMatchFunc MatchFunc = func(data []byte) bool {
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if len(data) < int(HttpNeedBytesNum) {
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return false
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}
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_, ok := httpHeadBytes[string(data[:3])]
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return ok
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}
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// From https://github.com/hashicorp/yamux/blob/master/spec.md
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var YamuxMatchFunc MatchFunc = func(data []byte) bool {
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if len(data) < int(YamuxNeedBytesNum) {
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return false
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}
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if data[0] == 0 && data[1] >= 0x0 && data[1] <= 0x3 {
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return true
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}
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return false
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}
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