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32 lines
925 B
Go
32 lines
925 B
Go
// Copyright 2016 Jimmy Zelinskie
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package bittorrent
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// NewClientID returns the part of a PeerID that identifies a peer's client
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// software.
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func NewClientID(peerID string) (clientID string) {
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length := len(peerID)
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if length >= 6 {
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if peerID[0] == '-' {
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if length >= 7 {
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clientID = peerID[1:7]
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}
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} else {
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clientID = peerID[:6]
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}
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}
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return
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}
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