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1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef REMOTING_JINGLE_GLUE_NETWORK_SETTINGS_H_ | |
6 #define REMOTING_JINGLE_GLUE_NETWORK_SETTINGS_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "base/basictypes.h" | |
11 #include "base/logging.h" | |
12 | |
13 namespace remoting { | |
14 | |
15 struct NetworkSettings { | |
16 | |
17 // When hosts are configured with NAT traversal disabled they will | |
18 // typically also limit their P2P ports to this range, so that | |
19 // sessions may be blocked or un-blocked via firewall rules. | |
20 static const int kDefaultMinPort = 12400; | |
21 static const int kDefaultMaxPort = 12409; | |
22 | |
23 enum Flags { | |
24 // Don't use STUN or relay servers. Accept incoming P2P connection | |
25 // attempts, but don't initiate any. This ensures that the peer is | |
26 // on the same network. Note that connection will always fail if | |
27 // both ends use this mode. | |
28 NAT_TRAVERSAL_DISABLED = 0x0, | |
29 | |
30 // Allow outgoing connections, even when STUN and RELAY are not enabled. | |
31 NAT_TRAVERSAL_OUTGOING = 0x1, | |
32 | |
33 // Active NAT traversal using STUN. | |
34 NAT_TRAVERSAL_STUN = 0x2, | |
35 | |
36 // Allow the use of relay servers when a direct connection is not available. | |
37 NAT_TRAVERSAL_RELAY = 0x4, | |
38 | |
39 // Active NAT traversal using STUN and relay servers. | |
40 NAT_TRAVERSAL_FULL = NAT_TRAVERSAL_STUN | NAT_TRAVERSAL_RELAY | | |
41 NAT_TRAVERSAL_OUTGOING | |
42 }; | |
43 | |
44 NetworkSettings() | |
45 : flags(NAT_TRAVERSAL_DISABLED), | |
46 min_port(0), | |
47 max_port(0) { | |
48 DCHECK(!(flags & (NAT_TRAVERSAL_STUN | NAT_TRAVERSAL_RELAY)) || | |
49 (flags & NAT_TRAVERSAL_OUTGOING)); | |
50 } | |
51 | |
52 explicit NetworkSettings(uint32 flags) | |
53 : flags(flags), | |
54 min_port(0), | |
55 max_port(0) { | |
56 } | |
57 | |
58 // Parse string in the form "<min_port>-<max_port>". E.g. "12400-12409". | |
59 // Returns true if string was parsed successfuly. | |
60 static bool ParsePortRange(const std::string& port_range, | |
61 int* out_min_port, | |
62 int* out_max_port); | |
63 | |
64 uint32 flags; | |
65 | |
66 // |min_port| and |max_port| specify range (inclusive) of ports used by | |
67 // P2P sessions. Any port can be used when both values are set to 0. | |
68 int min_port; | |
69 int max_port; | |
70 }; | |
71 | |
72 } // namespace remoting | |
73 | |
74 #endif // REMOTING_HOST_NETWORK_SETTINGS_H_ | |
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