Wrap syscalls with try-catch

lib/net.js

@@ -92,6 +92,7 @@ function Socket (peerInfo) {
     debug('recvBuffer.used ' + recvBuffer.used);
     var bytesRead;
 
+    try {
       if (self.type == "unix") {
         bytesRead = recvMsg(self.fd,
                             recvBuffer,
@@ -107,6 +108,10 @@ function Socket (peerInfo) {
                          recvBuffer.used,
                          recvBuffer.length - recvBuffer.used);
       }
+    } catch (e) {
+      self.forceClose(e);
+      return;
+    }
 
     debug('bytesRead ' + bytesRead + '\n');
 
@@ -320,6 +325,8 @@ Socket.prototype.flush = function () {
     }
 
     var fdToSend = null;
+
+    try {
       if (b.isFd) {
         fdToSend = parseInt(b.asciiSlice(b.sent, b.used - b.sent));
         bytesWritten = sendFD(self.fd, fdToSend);
@@ -329,6 +336,11 @@ Socket.prototype.flush = function () {
                              b.sent,
                              b.used - b.sent);
       }
+    } catch (e) {
+      self.forceClose(e);
+      return;
+    }
+
     if (bytesWritten === null) {
       // could not flush everything
       self._writeWatcher.start();
@@ -451,7 +463,14 @@ Socket.prototype.forceClose = function (exception) {
 Socket.prototype._shutdown = function () {
   if (this.writable) {
     this.writable = false;
-    shutdown(this.fd, 'write');
+
+    try {
+      shutdown(this.fd, 'write')
+    } catch (e) {
+      this.forceClose(e);
+      return;
+    }
+
     if (!this.readable) this.forceClose();
   }
 };