Replace setsockopt(IP_PKTINFO) and setsockopt(IPV6_RECVPKTINFO) calls by

gfe_quic::QuicSocketUtils::SetGetAddressInfo() calls. Update
gfe_quic::QuicSocketUtils::SetGetAddressInfo() to the best-known
implementation.

Merge internal CL: 70966702

R=rtenneti@chromium.org
BUG=none

Review URL: https://codereview.chromium.org/397793004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@283482 0039d316-1c4b-4281-b951-d872f2087c98

net/tools/quic/quic_client.cc

@@ -124,15 +124,7 @@ bool QuicClient::CreateUDPSocket() {
     return false;
   }
 
-  int get_local_ip = 1;
-  if (address_family == AF_INET) {
-    rc = setsockopt(fd_, IPPROTO_IP, IP_PKTINFO,
-                    &get_local_ip, sizeof(get_local_ip));
-  } else {
-    rc =  setsockopt(fd_, IPPROTO_IPV6, IPV6_RECVPKTINFO,
-                     &get_local_ip, sizeof(get_local_ip));
-  }
-
+  rc = QuicSocketUtils::SetGetAddressInfo(fd_, address_family);
   if (rc < 0) {
     LOG(ERROR) << "IP detection not supported" << strerror(errno);
     return false;

net/tools/quic/quic_server.cc

@@ -28,12 +28,16 @@
 #define SO_RXQ_OVFL 40
 #endif
 
+namespace net {
+namespace tools {
+
+namespace {
+
 const int kEpollFlags = EPOLLIN | EPOLLOUT | EPOLLET;
-static const char kSourceAddressTokenSecret[] = "secret";
+const char kSourceAddressTokenSecret[] = "secret";
 const uint32 kServerInitialFlowControlWindow = 100 * net::kMaxPacketSize;
 
-namespace net {
-namespace tools {
+}  // namespace
 
 QuicServer::QuicServer()
     : port_(0),
@@ -92,6 +96,8 @@ bool QuicServer::Listen(const IPEndPoint& address) {
     return false;
   }
 
+  // Enable the socket option that allows the local address to be
+  // returned if the socket is bound to more than one address.
   int rc = QuicSocketUtils::SetGetAddressInfo(fd_, address_family);
 
   if (rc < 0) {
@@ -122,20 +128,6 @@ bool QuicServer::Listen(const IPEndPoint& address) {
     return false;
   }
 
-  // Enable the socket option that allows the local address to be
-  // returned if the socket is bound to more than on address.
-  int get_local_ip = 1;
-  rc = setsockopt(fd_, IPPROTO_IP, IP_PKTINFO,
-                  &get_local_ip, sizeof(get_local_ip));
-  if (rc == 0 && address_family == AF_INET6) {
-    rc = setsockopt(fd_, IPPROTO_IPV6, IPV6_RECVPKTINFO,
-                    &get_local_ip, sizeof(get_local_ip));
-  }
-  if (rc != 0) {
-    LOG(ERROR) << "Failed to set required socket options";
-    return false;
-  }
-
   sockaddr_storage raw_addr;
   socklen_t raw_addr_len = sizeof(raw_addr);
   CHECK(address.ToSockAddr(reinterpret_cast<sockaddr*>(&raw_addr),

net/tools/quic/quic_socket_utils.cc

@@ -70,13 +70,13 @@ bool QuicSocketUtils::GetOverflowFromMsghdr(struct msghdr *hdr,
 // static
 int QuicSocketUtils::SetGetAddressInfo(int fd, int address_family) {
   int get_local_ip = 1;
-  if (address_family == AF_INET) {
-    return setsockopt(fd, IPPROTO_IP, IP_PKTINFO,
-                      &get_local_ip, sizeof(get_local_ip));
-  } else {
-    return setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO,
+  int rc = setsockopt(fd, IPPROTO_IP, IP_PKTINFO,
                       &get_local_ip, sizeof(get_local_ip));
+  if (rc == 0 && address_family == AF_INET6) {
+    rc = setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO,
+                    &get_local_ip, sizeof(get_local_ip));
   }
+  return rc;
 }
 
 // static