static void
connectHostNext(ConnectState *connectState) {
Socket *sock;
while (connectState->infoPtr != NULL) {
sock = tryConnectHostNext(connectState);
if (sock != Socket_noSocket) {
// Connection succeeded or connection in progress
connectState->nd =
NetDescriptor_new(sock, (void *) connectState);
if (connectState->nd == NULL) {
ConnectError error;
int savedErrno = errno;
log_add(log_Error, "NetDescriptor_new() failed: %s.\n",
strerror(errno));
Socket_close(sock);
freeaddrinfo(connectState->info);
connectState->info = NULL;
connectState->infoPtr = NULL;
connectState->state = Connect_closed;
error.state = Connect_connecting;
error.err = savedErrno;
doConnectErrorCallback(connectState, &error);
return;
}
NetDescriptor_setWriteCallback(connectState->nd, connectCallback);
setConnectTimeout(connectState);
return;
}
connectState->infoPtr = connectState->infoPtr->ai_next;
}
// Connect failed to all addresses.
if (connectState->flags.retryDelayMs == Connect_noRetry) {
connectHostReportAllFailed(connectState);
return;
}
setConnectRetryAlarm(connectState);
}
static void
acceptSingleConnection(ListenState *listenState, NetDescriptor *nd) {
Socket *sock;
Socket *acceptResult;
struct sockaddr_storage addr;
socklen_t addrLen;
NetDescriptor *newNd;
sock = NetDescriptor_getSocket(nd);
addrLen = sizeof (addr);
acceptResult = Socket_accept(sock, (struct sockaddr *) &addr, &addrLen);
if (acceptResult == Socket_noSocket) {
switch (errno) {
case EWOULDBLOCK:
case ECONNABORTED:
// Nothing serious. Keep listening.
return;
case EMFILE:
case ENFILE:
case ENOBUFS:
case ENOMEM:
#ifdef ENOSR
case ENOSR:
#endif
// Serious problems, but future connections may still
// be possible.
log_add(log_Warning, "accept() reported '%s'",
strerror(errno));
return;
default:
// Should not happen.
log_add(log_Fatal, "Internal error: accept() reported "
"'%s'", strerror(errno));
explode();
}
}
(void) Socket_setReuseAddr(acceptResult);
// Ignore errors; it's not a big deal.
if (Socket_setNonBlocking(acceptResult) == -1) {
int savedErrno = errno;
log_add(log_Error, "Could not make socket non-blocking: %s.",
strerror(errno));
Socket_close(acceptResult);
errno = savedErrno;
return;
}
(void) Socket_setInlineOOB(acceptResult);
// Ignore errors; it's not a big deal as the other
// party is not not supposed to send any OOB data.
(void) Socket_setKeepAlive(sock);
// Ignore errors; it's not a big deal.
#ifdef DEBUG
{
char hostname[NI_MAXHOST];
int gniRes;
gniRes = getnameinfo((struct sockaddr *) &addr, addrLen,
hostname, sizeof hostname, NULL, 0, 0);
if (gniRes != 0) {
log_add(log_Error, "Error while performing hostname "
"lookup for incoming connection: %s",
(gniRes == EAI_SYSTEM) ? strerror(errno) :
gai_strerror(gniRes));
} else {
log_add(log_Debug, "Accepted incoming connection from '%s'.",
hostname);
}
}
#endif
newNd = NetDescriptor_new(acceptResult, NULL);
if (newNd == NULL) {
int savedErrno = errno;
log_add(log_Error, "NetDescriptor_new() failed: %s.",
strerror(errno));
Socket_close(acceptResult);
errno = savedErrno;
return;
}
doListenConnectCallback(listenState, nd, newNd,
(struct sockaddr *) &addr, addrLen);
// NB: newNd is now handed over to the callback function, and should
// no longer be referenced from here.
}
static NetDescriptor *
listenPortSingle(struct ListenState *listenState, struct addrinfo *info) {
Socket *sock;
int bindResult;
int listenResult;
NetDescriptor *nd;
sock = Socket_openNative(info->ai_family, info->ai_socktype,
info->ai_protocol);
if (sock == Socket_noSocket) {
int savedErrno = errno;
log_add(log_Error, "socket() failed: %s.", strerror(errno));
errno = savedErrno;
return NULL;
}
(void) Socket_setReuseAddr(sock);
// Ignore errors; it's not a big deal.
if (Socket_setNonBlocking(sock) == -1) {
int savedErrno = errno;
// Error message is already printed.
Socket_close(sock);
errno = savedErrno;
return NULL;
}
bindResult = Socket_bind(sock, info->ai_addr, info->ai_addrlen);
if (bindResult == -1) {
int savedErrno = errno;
if (errno == EADDRINUSE) {
#ifdef DEBUG
log_add(log_Warning, "bind() failed: %s.", strerror(errno));
#endif
} else
log_add(log_Error, "bind() failed: %s.", strerror(errno));
Socket_close(sock);
errno = savedErrno;
return NULL;
}
listenResult = Socket_listen(sock, listenState->flags.backlog);
if (listenResult == -1) {
int savedErrno = errno;
log_add(log_Error, "listen() failed: %s.", strerror(errno));
Socket_close(sock);
errno = savedErrno;
return NULL;
}
nd = NetDescriptor_new(sock, (void *) listenState);
if (nd == NULL) {
int savedErrno = errno;
log_add(log_Error, "NetDescriptor_new() failed: %s.",
strerror(errno));
Socket_close(sock);
errno = savedErrno;
return NULL;
}
NetDescriptor_setReadCallback(nd, acceptCallback);
return nd;
}