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Add debug logging for tcp address binding

pull/80/head
Andri Yngvason 2022-10-24 20:55:38 +00:00
parent 3588670c81
commit efb5ab956c
1 changed files with 33 additions and 4 deletions
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37
src/server.c
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@ -1160,6 +1160,21 @@ accept_failure:
free(client); free(client);
} }
static void sockaddr_to_string(char* dst, size_t sz, const struct sockaddr* addr)
{
struct sockaddr_in *sa_in = (struct sockaddr_in*)addr;
struct sockaddr_in6 *sa_in6 = (struct sockaddr_in6*)addr;
switch (addr->sa_family) {
case AF_INET:
inet_ntop(addr->sa_family, &sa_in->sin_addr, dst, sz);
break;
case AF_INET6:
inet_ntop(addr->sa_family, &sa_in6->sin6_addr, dst, sz);
break;
}
}
static int bind_address_tcp(const char* name, int port) static int bind_address_tcp(const char* name, int port)
{ {
struct addrinfo hints = { struct addrinfo hints = {
@ -1173,23 +1188,37 @@ static int bind_address_tcp(const char* name, int port)
snprintf(service, sizeof(service), "%d", port); snprintf(service, sizeof(service), "%d", port);
int rc = getaddrinfo(name, service, &hints, &result); int rc = getaddrinfo(name, service, &hints, &result);
if (rc != 0) if (rc != 0) {
nvnc_log(NVNC_LOG_ERROR, "Failed to get address info: %s",
gai_strerror(rc));
return -1; return -1;
}
int fd = -1; int fd = -1;
for (struct addrinfo* p = result; p != NULL; p = p->ai_next) { for (struct addrinfo* p = result; p != NULL; p = p->ai_next) {
char ai_str[256] = { 0 };
sockaddr_to_string(ai_str, sizeof(ai_str), p->ai_addr);
nvnc_log(NVNC_LOG_DEBUG, "Trying address: %s", ai_str);
fd = socket(p->ai_family, p->ai_socktype, p->ai_protocol); fd = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
if (fd < 0) if (fd < 0) {
nvnc_log(NVNC_LOG_DEBUG, "Failed to create socket: %m");
continue; continue;
}
int one = 1; int one = 1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(int)) < 0) if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(int)) < 0) {
nvnc_log(NVNC_LOG_DEBUG, "Failed to set socket options: %m");
goto failure; goto failure;
}
if (bind(fd, p->ai_addr, p->ai_addrlen) == 0) if (bind(fd, p->ai_addr, p->ai_addrlen) == 0) {
nvnc_log(NVNC_LOG_DEBUG, "Successfully bound to address");
break; break;
}
nvnc_log(NVNC_LOG_DEBUG, "Failed to bind to address: %m");
failure: failure:
close(fd); close(fd);
fd = -1; fd = -1;