folly: add bser encode/decode for dynamic

[folly.git] / folly / IPAddressV4.cpp

diff --git a/folly/IPAddressV4.cpp b/folly/IPAddressV4.cpp
index a33386d5aafd8625dc485a6f767a3ba799adf8e1..e34f29897def1d75c9f826f130d45228bcec6e45 100644 (file)
--- a/folly/IPAddressV4.cpp
+++ b/folly/IPAddressV4.cpp
@@ -111,13 +111,22 @@ void IPAddressV4::setFromBinary(ByteRange bytes) {
 
 // public
 IPAddressV6 IPAddressV4::createIPv6() const {
-  ByteArray16 ba{{0}};
+  ByteArray16 ba{};
   ba[10] = 0xff;
   ba[11] = 0xff;
   std::memcpy(&ba[12], bytes(), 4);
   return IPAddressV6(ba);
 }
 
+// public
+IPAddressV6 IPAddressV4::getIPv6For6To4() const {
+  ByteArray16 ba{};
+  ba[0] = (uint8_t)((IPAddressV6::PREFIX_6TO4 & 0xFF00) >> 8);
+  ba[1] = (uint8_t)(IPAddressV6::PREFIX_6TO4 & 0x00FF);
+  std::memcpy(&ba[2], bytes(), 4);
+  return IPAddressV6(ba);
+}
+
 // public
 string IPAddressV4::toJson() const {
   return format(