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 NetworkSettingsNetworkSettings44 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 NetworkSettingsNetworkSettings52 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_ 75