Fixing SDP parsing crash due to invalid port numbers.

webrtc/base/socketaddress.h

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 14 matching lines @@
 namespace rtc {
 
 // Records an IP address and port.
 class SocketAddress {
  public:
   // Creates a nil address.
   SocketAddress();
 
   // Creates the address with the given host and port. Host may be a
   // literal IP string or a hostname to be resolved later.
+  // DCHECKs that port is in valid range (0 to 2^16-1).
   SocketAddress(const std::string& hostname, int port);
 
   // Creates the address with the given IP and port.
   // IP is given as an integer in host byte order. V4 only, to be deprecated.
+  // DCHECKs that port is in valid range (0 to 2^16-1).
   SocketAddress(uint32_t ip_as_host_order_integer, int port);
 
   // Creates the address with the given IP and port.
+  // DCHECKs that port is in valid range (0 to 2^16-1).
   SocketAddress(const IPAddress& ip, int port);
 
   // Creates a copy of the given address.
   SocketAddress(const SocketAddress& addr);
 
   // Resets to the nil address.
   void Clear();
 
   // Determines if this is a nil address (empty hostname, any IP, null port)
   bool IsNil() const;
@@ skipping 18 matching lines @@
   // Sets the IP address while retaining the hostname.  Useful for bypassing
   // DNS for a pre-resolved IP.
   // IP is given as an integer in host byte order. V4 only, to be deprecated.
   void SetResolvedIP(uint32_t ip_as_host_order_integer);
 
   // Sets the IP address while retaining the hostname.  Useful for bypassing
   // DNS for a pre-resolved IP.
   void SetResolvedIP(const IPAddress& ip);
 
   // Changes the port of this address to the given one.
+  // DCHECKs that port is in valid range (0 to 2^16-1).
   void SetPort(int port);
 
   // Returns the hostname.
   const std::string& hostname() const { return hostname_; }
 
   // Returns the IP address as a host byte order integer.
   // Returns 0 for non-v4 addresses.
   uint32_t ip() const;
 
   const IPAddress& ipaddr() const;
@@ skipping 94 matching lines @@
   bool literal_;  // Indicates that 'hostname_' contains a literal IP string.
 };
 
 bool SocketAddressFromSockAddrStorage(const sockaddr_storage& saddr,
                                       SocketAddress* out);
 SocketAddress EmptySocketAddressWithFamily(int family);
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_SOCKETADDRESS_H_