Add support for setting the SO_REUSEADDR option for sockets.

Review URL: http://codereview.chromium.org/50036

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1557 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/platform-freebsd.cc

@@ -667,6 +667,8 @@ class FreeBSDSocket : public Socket {
   int Send(const char* data, int len) const;
   int Receive(char* data, int len) const;
 
+  bool SetReuseAddress(bool reuse_address);
+
   bool IsValid() const { return socket_ != -1; }
 
  private:
@@ -763,6 +765,13 @@ int FreeBSDSocket::Receive(char* data, int len) const {
 }
 
 
+bool FreeBSDSocket::SetReuseAddress(bool reuse_address) {
+  int on = reuse_address ? 1 : 0;
+  int status = setsockopt(socket_, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+  return status == 0;
+}
+
+
 bool Socket::Setup() {
   // Nothing to do on FreeBSD.
   return true;

src/platform-linux.cc

@@ -668,6 +668,8 @@ class LinuxSocket : public Socket {
   int Send(const char* data, int len) const;
   int Receive(char* data, int len) const;
 
+  bool SetReuseAddress(bool reuse_address);
+
   bool IsValid() const { return socket_ != -1; }
 
  private:
@@ -764,6 +766,13 @@ int LinuxSocket::Receive(char* data, int len) const {
 }
 
 
+bool LinuxSocket::SetReuseAddress(bool reuse_address) {
+  int on = reuse_address ? 1 : 0;
+  int status = setsockopt(socket_, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+  return status == 0;
+}
+
+
 bool Socket::Setup() {
   // Nothing to do on Linux.
   return true;

src/platform-macos.cc

@@ -593,6 +593,8 @@ class MacOSSocket : public Socket {
   int Send(const char* data, int len) const;
   int Receive(char* data, int len) const;
 
+  bool SetReuseAddress(bool reuse_address);
+
   bool IsValid() const { return socket_ != -1; }
 
  private:
@@ -695,6 +697,13 @@ int MacOSSocket::Receive(char* data, int len) const {
 }
 
 
+bool MacOSSocket::SetReuseAddress(bool reuse_address) {
+  int on = reuse_address ? 1 : 0;
+  int status = setsockopt(socket_, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+  return status == 0;
+}
+
+
 bool Socket::Setup() {
   // Nothing to do on MacOS.
   return true;

src/platform-win32.cc

@@ -1565,6 +1565,8 @@ class Win32Socket : public Socket {
   int Send(const char* data, int len) const;
   int Receive(char* data, int len) const;
 
+  bool SetReuseAddress(bool reuse_address);
+
   bool IsValid() const { return socket_ != INVALID_SOCKET; }
 
  private:
@@ -1661,6 +1663,14 @@ int Win32Socket::Receive(char* data, int len) const {
 }
 
 
+bool Win32Socket::SetReuseAddress(bool reuse_address) {
+  BOOL on = reuse_address ? TRUE : FALSE;
+  int status = setsockopt(socket_, SOL_SOCKET, SO_REUSEADDR,
+                          reinterpret_cast<char*>(&on), sizeof(on));
+  return status == SOCKET_ERROR;
+}
+
+
 bool Socket::Setup() {
   // Initialize Winsock32
   int err;

src/platform.h

@@ -448,6 +448,9 @@ class Socket {
   virtual int Send(const char* data, int len) const = 0;
   virtual int Receive(char* data, int len) const = 0;
 
+  // Set the value of the SO_REUSEADDR socket option.
+  virtual bool SetReuseAddress(bool reuse_address) = 0;
+
   virtual bool IsValid() const = 0;
 
   static bool Setup();