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Disable AI_PASSIVE for client sockets.

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This commit is contained in:
tim.schubert@tu-bs.de 2016-10-28 15:09:41 +02:00
parent f42b7a354d
commit 0b74b5e054
1 changed files with 6 additions and 5 deletions
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11
netcalc.c
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@ -23,14 +23,14 @@ void cleanup(int signum)
} }
} }
int prepaddr(char *host, char *port, struct addrinfo **ainfo) int prepaddr(char *host, char *port, struct addrinfo **ainfo, int flags)
{ {
fprintf(stderr, "debug: %s %s\n", host, port); fprintf(stderr, "debug: %s %s\n", host, port);
struct addrinfo hints; // hints to what we want struct addrinfo hints; // hints to what we want
memset(&hints, 0, sizeof hints); memset(&hints, 0, sizeof hints);
hints.ai_family = AF_INET6; // AF_INET or AF_INET6 to force version hints.ai_family = AF_INET6; // AF_INET or AF_INET6 to force version
hints.ai_socktype = SOCK_STREAM; hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE; hints.ai_flags = flags;
int status; int status;
if ((status = getaddrinfo(host, port, &hints, ainfo)) != 0) { if ((status = getaddrinfo(host, port, &hints, ainfo)) != 0) {
@ -281,8 +281,9 @@ int client()
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
char* host = "localhost"; char* host = NULL;
char* port = "5000"; char* port = "5000";
int flags = 0;
if (argc > 1) { if (argc > 1) {
if (strcmp(argv[1], "-c") == 0) { if (strcmp(argv[1], "-c") == 0) {
@ -296,14 +297,14 @@ int main(int argc, char *argv[])
printf("debug: argv[1] = %s running in server mode\n", argv[1]); printf("debug: argv[1] = %s running in server mode\n", argv[1]);
CLIENT = 0; CLIENT = 0;
if (argc > 2) { if (argc > 2) {
host = NULL;
port = argv[1]; port = argv[1];
flags |= AI_PASSIVE;
} }
} }
} }
struct addrinfo *ainfo; struct addrinfo *ainfo;
if (prepaddr(host, port, &ainfo) != 0) { if (prepaddr(host, port, &ainfo, flags) != 0) {
fprintf(stderr, "prepaddr: failed to obtain adress.\n"); fprintf(stderr, "prepaddr: failed to obtain adress.\n");
return 1; return 1;
} }