Wrap syscalls with try-catch

lib/net.js

@@ -92,20 +92,25 @@ function Socket (peerInfo) {
     debug('recvBuffer.used ' + recvBuffer.used);
     var bytesRead;
 
-    if (self.type == "unix") {
-      bytesRead = recvMsg(self.fd,
-                          recvBuffer,
-                          recvBuffer.used,
-                          recvBuffer.length - recvBuffer.used);
-      debug('recvMsg.fd ' + recvMsg.fd);
-      if (recvMsg.fd) {
-        self.emit('fd', recvMsg.fd);
+    try {
+      if (self.type == "unix") {
+        bytesRead = recvMsg(self.fd,
+                            recvBuffer,
+                            recvBuffer.used,
+                            recvBuffer.length - recvBuffer.used);
+        debug('recvMsg.fd ' + recvMsg.fd);
+        if (recvMsg.fd) {
+          self.emit('fd', recvMsg.fd);
+        }
+      } else {
+        bytesRead = read(self.fd,
+                         recvBuffer,
+                         recvBuffer.used,
+                         recvBuffer.length - recvBuffer.used);
       }
-    } else {
-      bytesRead = read(self.fd,
-                       recvBuffer,
-                       recvBuffer.used,
-                       recvBuffer.length - recvBuffer.used);
+    } catch (e) {
+      self.forceClose(e);
+      return;
     }
 
     debug('bytesRead ' + bytesRead + '\n');
@@ -320,15 +325,22 @@ Socket.prototype.flush = function () {
     }
 
     var fdToSend = null;
-    if (b.isFd) {
-      fdToSend = parseInt(b.asciiSlice(b.sent, b.used - b.sent));
-      bytesWritten = sendFD(self.fd, fdToSend);
-    } else {
-      bytesWritten = write(self.fd,
-                           b,
-                           b.sent,
-                           b.used - b.sent);
+
+    try {
+      if (b.isFd) {
+        fdToSend = parseInt(b.asciiSlice(b.sent, b.used - b.sent));
+        bytesWritten = sendFD(self.fd, fdToSend);
+      } else {
+        bytesWritten = write(self.fd,
+                             b,
+                             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();
   }
 };