WSAEHOSTUNREACH A socket operation was attempted to an unreachable host. An operation was attempted on a nonblocking socket with an operation already in progress—that is, calling connect a second time on a nonblocking socket that is already connecting, or canceling an If the socket is already connected or an exclusive/multiplexed mode change failed, WSAEISCONN is returned. It's easy and free!
The QoS reserve request has been confirmed. February 28th, 2008, 12:10 PM TheCPUWizard Re: CSocket::Connect and WSAEISCONN error Here are two ideas... 1) Use code tags, these are discussed in the FAQ's (which I am sure you read No such service is known. WinSock functions: gethostbyaddr(), gethostbyname(), WSAAsyncGetHostByAddr(), WSAAsyncGetHostByName(), WSAAsyncGetProtoByName(), WSAAsyncGetProtoByNumber(), WSAAsyncGetServByName(), WSAAsyncGetServByPort() Additional functions: It is strange that the asynchronous protocol and services functions can fail with this error, but the synchronous cannot.
The WinSock API does not provide any way to select specific name resolution protocols, server address, or record type. No process may have more than a system-defined number of file descriptors open at a time. The behavior may vary: some WinSocks might complete in background, and others may require another call to closesocket to complete. What Is A Socket Error The "address" it refers to is the remote socket name (protocol, port and address).
Windows Sockets Error Codes Most Windows Sockets 2 functions do not return the specific cause of an error when the function returns. It can also be brought about if the laptop or desktop is contaminated with a trojan or spyware attack or through a poor shutdown of the computer system. Downloads and tools Windows 10 dev tools Visual Studio Windows SDK Windows Store badges Essentials API reference (Windows apps) API reference (desktop apps) Code samples How-to guides (Windows apps) Learning resources This error is also returned if the service provider returned a version number other than 2.0.
WSA_IO_INCOMPLETE 996 Overlapped I/O event object not in signaled state. Socket Error 10054 Connection Reset By Peer The FormatMessage function can be used to obtain the message string for the returned error. Omniref is free for everyone, but registered users get extra privileges like posting, commenting and voting.Sign in with GitHubSign in with GoogleSign in with FacebookBy creating an Omniref account, you agree If something fails in the constructor you have no way of knowing what really broke.
Socket Error 10054
WSASYSNOTREADY 10091 Network subsystem is unavailable. Note When issuing a blocking Winsock call such as connect, Winsock may need to wait for a network event before the call can complete. Winsock Connect If socket s, is unbound, unique values are assigned to the local association by the system, and the socket is marked as bound. Socket Connect Example See also: WSAEAFNOSUPPORT WSAEPROCLIM (10067) Too many processes.
When a connection between sockets is broken, the socket that was connected should be discarded and new socket should be created. This reset could be generated locally by the network system when it detects a connection failure, or it might be received from the remote host (in TCP terms, the remote host Are you using an optional level or socket option that may not be supported on all WinSock implementations? WSAEINTR The blocking Windows Socket 1.1 call was canceled through WSACancelBlockingCall. Wsagetlasterror
If the signal handler performs a normal return, the interrupted function call will seem to have returned the error condition. TCP/IP scenario: Most WinSock implementations use domain name system (DNS) protocol for hostname to address resolution, although a few use Network Information System (NIS). Now that you know what does WSAEISCONN 10056 (0X2748) mean, you may avoid this kind of system errors in the future. WSAEFAULT 10014 Bad address.
Developer suggestions: WSAStartup() failed, and you didn't detect it, or it wasn't called for the current task at all, or you called WSACleanup() too many times. Wsagetlasterror 0 The current Windows Sockets implementation does not support the Windows Sockets specification version requested by the application. If it doesn't respond, it might be off-line or there may be a network problem along the way.
WinSock description: No equivalent.
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- Developer suggestions: Always check the return value from a memory allocation to be sure it succeeded.
- If you're on a serial connection, your local router is the IP address of the host you initially logged onto with SLIP or PPP.
- See also: WSAECONNABORTED, WSAECONNRESET, WSAENETRESET WSAETOOMANYREFS (10059) Too many references; can't splice Berkeley description: too many references to some kernel-level object; the associated resource has run out.
We appreciate your feedback. This error may also be returned for protocol and service queries, and means that the specified name could not be found in the relevant database. I meant running the application twice in succession, not two instances at the same time. Connect() Socket In C Update I tried to make a MVCE but encountered different symptoms: #define VC_EXTRALEAN #define WIN32_LEAN_AND_MEAN #include
WSAESTALE 10070 Stale file handle reference. WinSock description: No equivalent. send() and sendto(): you cannot send a datagram as large as you've requested. Does the error occur when trying to run the application a second time?
The 'serverSocket' that represents the socket that is listening for connections from clients, and there is only one of these and it stays the same for the whole duration while your WSAEINVAL (10022) Invalid argument. As you can see from the comprehensive list of WinSock functions, this error is the catch-all. WinSock description: Same as Berkeley.
If it persists, exit Windows or reboot your machine to remedy the problem. An invalid value was given for one of the arguments to a function. WinSock description: No equivalent. WSAENOBUFS Note No buffer space is available.