Windows Sockets 2 (Winsock) enables programmers to create advanced Internet, intranet, and other network-capable applications to transmit application data across the wire, independent of the network protocol being used
Questions tagged [winsock2]
964 questions
4
votes
2 answers
What are the equivalents of IP_RECVOPTS and IP_RECVRETOPTS in Windows
I'm doing some socket programming that I'm trying to make cross-platform compatible. For Windows systems, I'm including the following headers:
#include
#include
When I tried to compile my application on Windows, I got…
Nick Williams
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How to wait for Windows TCP Network at startup?
I know this should be obvious, but I have found far too many DIFFERENT answers and the ones I've tried all fail (sometimes or all the time), so...
We are working on a service and some applications that run at startup on a Windows 10 computer that…
Steve Valliere
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votes
4 answers
Problem using Connect(), send(), recv, with UDP sockets
For my Uni assignment I have to create a fast action paced networked game and so have chosen to use UDP as opposed to TCP. I am aware of a lot of the differences in programming both UDP and TCP and have read through most of the relevant parts of…
Sent1nel
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0 answers
Performance difference between select() vs WSAEventSelect() vs WSAWaitForMultipleEvents()
I have an application that is using a cross platform library developed internally.
For various reasons I must stick with using this library under windows at least.
That library contains a socket class that I have to use and it's calling select.
I…
hookenz
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1 answer
WSARecv() and multiple buffers
I would like a precision with WSARecv.
Basically it seems you can use the function with an array of WSABUFs.
1- In an overlapped I/O context WITHOUT completion ports, say I use WSARecv() on a datagram socket with an array of 48 WSABUFs, does it…
Yannick
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5 answers
How to interrupt other std::threads c++
I have a server which is built in a thread-per-client way. Lately, I bumped into a problem that I'm having a really hard time to come up with a solution to, so I thought to ask some help.
My server hosts a lobby, in the lobby there are many rooms…
John Wood
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4
votes
2 answers
Winsock RIO: RIOReceive returns immediately with no bytesTransferred
I'm having problems with getting winsock RIO working.
It seems that every time I post a RIOReceive it returns immediately with 0 bytes transferred, and my peer can't get a message through.
After posting a RIOReceive, I wait on the…
Michael220
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votes
3 answers
HTTP in C: Why do I have to call recv() multiple times?
I've started to learn about Network programming in C (sockets), and Internet protocols.
Currently I'm focusing on HTTP.
During my (very) short experience with implementing HTTP client using C, I discovered that sometimes you have to call recv()…
Programmer
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1 answer
What are socket groups for? (Windows)
How to create and join a socket to a socket group is explain here (WSASocket documentation).
http://msdn.microsoft.com/en-us/library/windows/desktop/ms742212(v=vs.85).aspx
It's also explained that all sockets in a socket group must connect to the…
Tim Lovell-Smith
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votes
1 answer
C++ WinSock2 Errors
Yesterday I've tried to make a socket server in C++, but I get errors upon compiling.
The errors:
Error 6 error LNK2019: unresolved external symbol _imp_socket@12 referenced in function "public: static unsigned long __cdecl…
x_metal_pride_diamond_x
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4
votes
4 answers
How to check if connection lost
How can I check if my connection with the server lost ? (Client or Server side no matter)
I'm using TCP connection, and the server recv unlimit clients. for each client the server create thread. and with that's way I can recv / send for each client.
Ido Hadar
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2 answers
WSAEFAULT error when use getsockname function
I have a problem using getsockname function. I have this code:
struct sockaddr sa;
int sa_len;
sa_len = sizeof(sa);
if (getsockname(socketfd, &sa, &sa_len) != SOCKET_ERROR)
{
///
}
else
{
int error = WSAGetLastError();
//error here…
Breakdown
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4
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3 answers
Receiving strange characters/symbols in winsock
Im learning about Winsock and Im having a strange issue when sending and receiving a simple string. Here's my code (pure C):
Client:
//...
//Declarations and stuff
//----------- SEND SOME DATA -------------------------------------------------
…
SergiGS
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2 answers
ws2_32.lib vs. libws2_32.a, what's the difference and how to link libws2_32 to NB project?
I use NetBeans, Windows and Cygwin with g++ compiler.
I'm examining Windows Sockets 2. I do everything that is written in MS manual. I have a code (mostly from this manual):
#include
#include
#include
#include…
Green
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4
votes
1 answer
Winsock send() always returns error 10057 in server
I'm trying to automate a server request to the client upon connection but I keep getting the WSAGetLastError of 10057. I've set up requests from the client to the server without issues so I don't understand why I cant do the reverse ? Maybe the…
Soran
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