Invalid function parameter
I 'm writing a C-Code in which i use sockets. I use this on windows and on linux, so i try to write it dynamicly. I wrote two functions to get a server/client-socket. There i have an error on compiling:
debian:~/cross_socket# make
gcc *.c -Wall
i586-mingw32msvc-gcc *.c -Wall -lws2_32
socket.c: In function 'get_client_socket':
socket.c:28: warning: passing argument 3 of 'get_socket' from incompatible pointer type
socket.c:13: note: expected 'int (*)(SOCKET, const struct sockaddr *, int)' but argument is of type 'int (*)(SOCKET, const struct sockaddr *, int)'
socket.c: In function 'get_server_socket_addr':
socket.c:43: warning: passing argument 3 of 'get_socket' from incompatible pointer type
socket.c:13: note: expected 'int (*)(SOCKET, const struct sockaddr *, int)' but argument is of type 'int (*)(SOCKET, const struct sockaddr *, int)'
gcc for my local system works great, but if i use mingw i get this error?!?
It says:
I use int (*)(SOCKET, const struct sockaddr *, int)
instead of int (*)(SOCKET, const struct sockaddr *, int)
... ?
Here the relevant code:
inline SOCKET get_socket(uint16_t port, in_addr_t socket_in_addr, int (*create)(SOCKET,
const struct sockaddr*, socklen_t)) {
SOCKADDR_IN addr;
SOCKET result_socket = GET_SOCKET;
if (SOCKET_NOK(result_socket))
return SOCKET_INIT_ERROR;
memset(&addr, 0, sizeof(SOCKADDR_IN));
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr.s_addr = socket_in_addr;
if (CONNECT_NOK(create(result_socket, (SOCKADDR*)&开发者_StackOverflow社区addr, sizeof(SOCKADDR))))
return SOCKET_INIT_ERROR;
return result_socket;
}
SOCKET get_client_socket(char* target, uint16_t port) {
return get_socket(port, inet_addr(target), &connect);
/* SOCKADDR_IN addr;
SOCKET client_socket = GET_SOCKET;
if (SOCKET_NOK(client_socket))
return SOCKET_INIT_ERROR;
memset(&addr,0,sizeof(SOCKADDR_IN));
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr.s_addr = inet_addr(target);
if (CONNECT_NOK(connect(client_socket, (SOCKADDR*)&addr, sizeof(SOCKADDR))))
return SOCKET_INIT_ERROR;
return client_socket;*/
}
SOCKET get_server_socket_addr(uint16_t port, in_addr_t socket_in_addr) {
return get_socket(port, socket_in_addr, &bind);
/* SOCKADDR_IN addr;
SOCKET server_socket = GET_SOCKET;
if (SOCKET_NOK(server_socket))
return SOCKET_INIT_ERROR;
memset(&addr, 0, sizeof(SOCKADDR_IN));
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr.s_addr = socket_in_addr;
if (CONNECT_NOK(bind(server_socket, (SOCKADDR*)&addr, sizeof(SOCKADDR_IN))))
return SOCKET_INIT_ERROR;
return server_socket;*/
}
Has anyone an idea?
Probably calling wrong convention.
On Windows most of the API functions are defined as WINAPI
, which is __stdcall
, a.k.a. PASCAL. i.e. parameters are passed left-to-right, and the stack is cleaned by the callee.
OTOH default compilation calling convention is __cdecl
.
P.S. It'd be nice if mingw printed a more detailed error information.
If "connect" is a function, you should just pass it as "connect", not "&connect". The name of the function is already a pointer to it.
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