Adding ERR_SOCKET_IS_CONNECTED.

net/base/net_errors_posix.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/base/net_errors.h"
 
 #include <errno.h>
 #include <stdlib.h>
 #include <string>
 #include <unistd.h>
@@ skipping 33 matching lines @@
     case EHOSTDOWN:
     case ENETUNREACH:
     case EAFNOSUPPORT:
       return ERR_ADDRESS_UNREACHABLE;
     case EADDRNOTAVAIL:
       return ERR_ADDRESS_INVALID;
     case EMSGSIZE:
       return ERR_MSG_TOO_BIG;
     case ENOTCONN:
       return ERR_SOCKET_NOT_CONNECTED;
+    case EISCONN:
+      return ERR_SOCKET_IS_CONNECTED;
     case EINVAL:
       return ERR_INVALID_ARGUMENT;
     case EADDRINUSE:
       return ERR_ADDRESS_IN_USE;
     case E2BIG:  // Argument list too long.
       return ERR_INVALID_ARGUMENT;
     case EBADF:  // Bad file descriptor.
       return ERR_INVALID_HANDLE;
     case EBUSY:  // Device or resource busy.
       return ERR_INSUFFICIENT_RESOURCES;
@@ skipping 47 matching lines @@
     case 0:
       return OK;
     default:
       LOG(WARNING) << "Unknown error " << os_error
                    << " mapped to net::ERR_FAILED";
       return ERR_FAILED;
   }
 }
 
 }  // namespace net