MOEA_Status MOEA_Init_socket(const int objectives, const int constraints,
const char* service) {
int gai_errno;
int listenfd;
int readfd;
int writefd;
int yes = 1;
struct addrinfo hints;
struct addrinfo *servinfo = NULL;
struct addrinfo *sp = NULL;
struct sockaddr_storage their_addr;
socklen_t addr_size = sizeof(their_addr);
MOEA_Init(objectives, constraints);
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
if (service == NULL) {
service = MOEA_DEFAULT_PORT;
}
if ((gai_errno = getaddrinfo(NULL, service, &hints, &servinfo)) != 0) {
MOEA_Debug("getaddrinfo: %s\n", gai_strerror(gai_errno));
return MOEA_Error(MOEA_SOCKET_ERROR);
}
for (sp = servinfo; sp != NULL; sp = sp->ai_next) {
if ((listenfd = socket(servinfo->ai_family, servinfo->ai_socktype, servinfo->ai_protocol)) == -1) {
MOEA_Debug("socket: %s\n", strerror(errno));
continue;
}
/* enable socket reuse to avoid socket already in use errors */
if (setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) == -1) {
MOEA_Debug("setsockopt: %s\n", strerror(errno));
}
if (bind(listenfd, servinfo->ai_addr, servinfo->ai_addrlen) == -1) {
MOEA_Debug("bind: %s\n", strerror(errno));
close(listenfd);
continue;
}
break;
}
freeaddrinfo(servinfo);
if (sp == NULL) {
return MOEA_Error(MOEA_SOCKET_ERROR);
}
if (listen(listenfd, 1) == -1) {
MOEA_Debug("listen: %s\n", strerror(errno));
close(listenfd);
return MOEA_Error(MOEA_SOCKET_ERROR);
}
if ((readfd = accept(listenfd, (struct sockaddr*)&their_addr, &addr_size)) == -1) {
MOEA_Debug("accept: %s\n", strerror(errno));
close(listenfd);
return MOEA_Error(MOEA_SOCKET_ERROR);
}
close(listenfd);
if ((writefd = dup(readfd)) == -1) {
MOEA_Debug("dup: %s\n", strerror(errno));
close(readfd);
return MOEA_Error(MOEA_SOCKET_ERROR);
}
if ((MOEA_Stream_input = fdopen(readfd, "r")) == NULL) {
MOEA_Debug("fdopen: %s\n", strerror(errno));
close(readfd);
close(writefd);
return MOEA_Error(MOEA_SOCKET_ERROR);
}
if ((MOEA_Stream_output = fdopen(writefd, "w")) == NULL) {
MOEA_Debug("fdopen: %s\n", strerror(errno));
fclose(MOEA_Stream_input);
close(readfd);
close(writefd);
return MOEA_Error(MOEA_SOCKET_ERROR);
}
return MOEA_SUCCESS;
}
void MOEA_Error_callback_default(const MOEA_Status status) {
MOEA_Debug("%s\n", MOEA_Status_message(status));
MOEA_Terminate();
exit(EXIT_FAILURE);
}
MOEA_Status MOEA_Init_socket(const int objectives, const int constraints,
const char* service) {
int status;
int listenfd;
int acceptfd;
struct addrinfo hints;
struct addrinfo *servinfo;
struct sockaddr_storage their_addr;
socklen_t addr_size = sizeof(their_addr);
MOEA_Init(objectives, constraints);
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
if (service == NULL) {
service = MOEA_DEFAULT_PORT;
}
if ((status = getaddrinfo(NULL, service, &hints, &servinfo)) != 0) {
MOEA_Debug("getaddrinfo: %s\n", gai_strerror(status));
return MOEA_Error(MOEA_SOCKET_ERROR);
}
if ((listenfd = socket(servinfo->ai_family, servinfo->ai_socktype, servinfo->ai_protocol)) == -1) {
MOEA_Debug("socket: %s\n", strerror(errno));
return MOEA_Error(MOEA_SOCKET_ERROR);
}
if (bind(listenfd, servinfo->ai_addr, servinfo->ai_addrlen) == -1) {
MOEA_Debug("bind: %s\n", strerror(errno));
return MOEA_Error(MOEA_SOCKET_ERROR);
}
if (listen(listenfd, 1) == -1) {
MOEA_Debug("listen: %s\n", strerror(errno));
return MOEA_Error(MOEA_SOCKET_ERROR);
}
if ((acceptfd = accept(listenfd, (struct sockaddr*)&their_addr, &addr_size)) == -1) {
MOEA_Debug("accept: %s\n", strerror(errno));
return MOEA_Error(MOEA_SOCKET_ERROR);
}
if (close(listenfd) == -1) {
MOEA_Debug("close: %s\n", strerror(errno));
return MOEA_Error(MOEA_SOCKET_ERROR);
}
if ((MOEA_Stream_input = fdopen(acceptfd, "r")) == NULL) {
MOEA_Debug("fdopen: %s\n", strerror(errno));
return MOEA_Error(MOEA_SOCKET_ERROR);
}
if ((MOEA_Stream_output = fdopen(dup(acceptfd), "w")) == NULL) {
MOEA_Debug("fdopen: %s\n", strerror(errno));
return MOEA_Error(MOEA_SOCKET_ERROR);
}
return MOEA_SUCCESS;
}