![]() ![]() Pass the Raw Net Object (socket handle) into these VIs. One needs to get the socket handle using the "TCP Get Raw Net Object.vi" found in "vi.lib\Utility\tcp.llb". These may be used as part of this toolkit or can be used to return the same information from the native LabVIEW TCP/IP toolkit (Windows only). This version adds GetType, Get Address, and GetPort functions - these functions take a socket handle and return the type (IPv4 or IPv6), the connected address, and the connected port. This fix is implemented in all versions (7.1 - 8.5) An example is included in the Multiple Connections Test VIs folder. It requires the user to set a flag on the Close Connection VI to prevent calling the cleanup if the connection was created by a listener. This fix is not an exact drop-in replacement for the LabVIEW native tools. If one executes a WSACleanup on a connection created from a listener, it closes all connections created in that listener thread. This happens because the Close Connection was executing a WSACleanup command on every call. This version fixes a bug in the previous versions where the Close Connection function, when called on any connection created from a Wait on Listener, would close all connections created by the Wait On Listener. For LabVIEW 7.1, the TCP function VIs are in a single folder. Microsoft Visual C 2008 Express Edition project (lvipv6comm.sln) to create the Winsock wrapper DLL (lvipv6comm.dll)Įxample VIs – Data Client.vi and Data Server.vi are adaptations of the example VIs of the same name that ship with LabVIEW that use the IPv6 Tools instead of the native LabVIEW TCP/IP functionsįor LabVIEW 8.0 and 8.5, a LabVIEW project exists (TCPIPv6.lvproj) and the TCP function VIs are in a LabVIEW library (TCPIPv6 Comm.lvlib). To view a copy of this license, visit or send a letter to Creative Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA. This work is licensed under the Creative Commons Attribution 3.0 Unported License. Everything else should be portable to a sockets implementation on Linux or MacOS (this is speculation only!) if anyone has a need. However, the only Winsock-specific functions called are WSAStartup (to initialize the DLL) and WSACleanup (to release resources). Windows only – uses the Winsock 2.x DLL. The Buffered and CRLF modes could be added (I just have no present need) ![]() Only supports the Standard and Immediate modes for the TCP Read function. Does not support name/service lookups – the user must supply a valid network address in dot-quad (IPv4) or colon-delimited hex (IPv6) – the loop back addresses of 127.0.0.1 and ::1 are acceptable Compiled and tested for LV version 8.5, 8.0, and 7.1 Drop in replacement for native LabVIEW TCP/IP functions I have taken that proof-of-concept project and refined it into, as much as practical, a direct drop-in replacement for the TCP/IP functions in LabVIEW. Christian Loew of NI created a proof-of-concept project using Microsoft Visual C to create a DLL that provided LabVIEW access (through a Call Library node) to Winsock 2.x. ![]() I have a project that requires IPv6 TCP communication so I requested that NI support my efforts which they graciously agreed to do. LabVIEW does not support IPv6 protocol (as of version 8.6) using the TCP/IP functions and there is no promised date for inclusion of IPv6 compatibility in an upcoming version. ![]()
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