sockets - Unable to fix Error 10038 WSAENOTSOCK -
i'm trying learn berkeley socket programming, stuck here: have 10038 error both of server , client program, according msdn means: "an operation attempted on not socket" socket "socket". here server/client code:
my client :
#include <winsock.h> #include <stdio.h> #include <string.h> #define buffsize 32 void diewitherror(char *errormessage); int main(int argc, char* argv[]){ int sock, byteslen; struct sockaddr_in servaddr; unsigned short servport =13; char * servip; char buff[buffsize+1]; wsadata wsadata; if(argc == 2){ servip = argv[1]; } if(wsastartup(makeword(2,0), &wsadata) != 0){ puts("error wsa"); } if(sock=socket(af_inet, sock_stream, 0) < 0){ puts("error socket"); } memset(&servaddr, 0, sizeof(servaddr)); servaddr.sin_family = af_inet; servaddr.sin_port = htons(servport); servaddr.sin_addr.s_addr = inet_addr(&servip); if(connect(sock, (struct sockaddr *)&servaddr, sizeof(servaddr)<0)){ diewitherror("connect error"); } while(byteslen=read(sock, buff, buffsize)){ buff[byteslen]= '\n'; } printf("heure : %s",buff); closesocket(sock); wsacleanup(); return 0; } void diewitherror(char *errormessage) { fprintf(stderr,"%s: %d\n", errormessage, wsagetlasterror()); exit(1); } and sever:
#include <winsock.h> #include <stdio.h> #include <string.h> #include <time.h> #include <stdlib.h> #define maxline 32 void diewitherror(char *errormessage); int main(){ int sock, sockc; struct sockaddr_in servaddr; unsigned short servport =13; time_t ticks; wsadata wsadata; char buff[maxline]; char * servip; if(wsastartup(makeword(2,0), &wsadata) != 0){ puts("error wsa"); } if(sock=socket(af_inet, sock_stream, ipproto_tcp) < 0){ puts("error socket"); } servip = "10.1.1.3"; memset(&servaddr, 0, sizeof(servaddr)); servaddr.sin_family = af_inet; servaddr.sin_port = htons(servport); servaddr.sin_addr.s_addr = htonl(inaddr_any); if(bind(sock,(struct sockaddr *)&servaddr, sizeof(servaddr) < 0)){ diewitherror("bind)()"); } if(listen(sock,maxqueue) < 0){ diewitherror("listen ()"); } while(1){ sockc = accept(sock, (struct sockaddr *)null, null); ticks = time(null); snprintf(buff,sizeof(buff),"%s",ctime(&ticks)); write(buff, sizeof(buff), maxline); } return 0; } void diewitherror(char *errormessage) { fprintf(stderr,"%s: %d\n", errormessage, wsagetlasterror()); exit(1); } each start have 10038 on connect() function of client , 10038 on bind() function on server.
thanks help.
unlike other platforms, windows not use file descriptors represent sockets. uses actual kernel objects. other platforms use int represent open file descriptors, , represent sockets. windows uses socket type instead, typedef uint_ptr (unsigned int in 32bit, unsigned __int64 in 64bit) can accommodate object handles. socket() function on windows returns invalid_socket (which (socket)(~0)) on error, while other platforms return (int)-1 instead. need make sure account not slice/truncate legitimate socket handles on windows.
when client calling inet_addr(), passing char** char* expected. compiler should have reported error on that.
as sockets not represented file descriptors on windows, cannot use read() , write() functions windows sockets. must use recv()/wsarecv() , send()/wsasend() functions instead. , need handle case functions can return socket_error (-1) on error.
try more instead:
client :
#include <winsock.h> #include <stdio.h> #include <string.h> #define buffsize 32 void diewitherrorcode(char *errormessage, int errcode); void diewitherror(char *errormessage, int *errcode = null); int main(int argc, char* argv[]) { socket sock; int ret; struct sockaddr_in servaddr; unsigned short servport = 13; char *servip; char buff[buffsize]; wsadata wsadata; if (argc != 2) { diewitherrorcode("error argc", wsaeinval); } servip = argv[1]; ret = wsastartup(makeword(2,0), &wsadata); if (ret != 0) { diewitherrorcode("error wsastartup", ret); } sock = socket(af_inet, sock_stream, ipproto_tcp); if (sock == invalid_socket) { diewitherror("error socket"); } memset(&servaddr, 0, sizeof(servaddr)); servaddr.sin_family = af_inet; servaddr.sin_port = htons(servport); servaddr.sin_addr.s_addr = inet_addr(servip); if (servaddr.sin_addr.s_addr == inet_none) { diewitherrorcode("error inet_addr", wsaeinval); } if (connect(sock, (struct sockaddr *)&servaddr, sizeof(servaddr)) == socket_error) { diewitherror("error connect"); } while(1) { ret = recv(sock, buff, buffsize, 0); if (ret == socket_error) { diewitherror("error recv"); } if (ret == 0) { fprintf(stderr, "disconnected\n"); break; } printf("heure : %.*s\n", ret, buff); } closesocket(sock); wsacleanup(); return 0; } void diewitherrorcode(char *errormessage, int errcode) { fprintf(stderr, "%s: %d\n", errormessage, errcode); exit(1); } void diewitherror(char *errormessage) { diewitherrorcode(errormessage, wsagetlasterror()); } server:
#include <winsock.h> #include <stdio.h> #include <string.h> #include <time.h> #include <stdlib.h> #define maxline 32 void diewitherrorcode(char *errormessage, int errcode); void diewitherror(char *errormessage); int main() { socket sock, sockc; struct sockaddr_in servaddr; unsigned short servport = 13; time_t ticks; wsadata wsadata; char buff[maxline]; int ret, buflen; ret = wsastartup(makeword(2,0), &wsadata); if (ret != 0) { diewitherrorcode("error wsa", ret); } sock = socket(af_inet, sock_stream, ipproto_tcp); if (sock == invalid_socket) { diewitherror("error socket"); } memset(&servaddr, 0, sizeof(servaddr)); servaddr.sin_family = af_inet; servaddr.sin_port = htons(servport); servaddr.sin_addr.s_addr = htonl(inaddr_any); if (bind(sock, (struct sockaddr *)&servaddr, sizeof(servaddr)) == socket_error) { diewitherror("error bind"); } if (listen(sock, maxqueue) == socket_error) { diewitherror("error listen"); } while(1) { sockc = accept(sock, null, null); if (sockc == invalid_socket) { diewitherror("error accept"); } ticks = time(null); buflen = snprintf(buff, sizeof(buff), "%s", ctime(&ticks)); if (send(sockc, buff, buflen, 0) == socket_error) { fprintf(stderr, "error send: %d\n", wsagetlasterror()); } closesocket(sockc); } closesocket(sock); wsacleanup(); return 0; } void diewitherrorcode(char *errormessage, int errcode) { fprintf(stderr,"%s: %d\n", errormessage, errcode); exit(1); } void diewitherror(char *errormessage) { diewitherrorcode(char *errormessage, wsagetlasterror()); }
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