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#include "./common.h"
const uint32_t TCPALIVE_IDLE_TIME = 3;
const uint32_t TCPALIVE_CHECK_INTVL = 1;
const uint32_t TCPALIVE_CHECK_CNT = 2;
struct sockaddr_in* get_addr(const char* addr, const char* port) {
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = 0;
hints.ai_protocol = 0;
struct addrinfo* res;
if (getaddrinfo(addr, port, &hints, &res) != 0) {
fprintf(stderr, "[client_create_socket] Unable to call getaddrinfo()\n");
exit(EXIT_FAILURE);
}
if (res->ai_next != NULL) {
fprintf(stderr, "[client_create_socket] Ambigous result of getaddrinfo()\n");
exit(EXIT_FAILURE);
}
struct sockaddr_in* result = calloc(1, sizeof(*result));
memcpy(result, res->ai_addr, sizeof(*res->ai_addr));
freeaddrinfo(res);
return result;
}
void conn_close(conn_t* conn) {
if (close(conn->conn_socket_fd) == -1) {
fprintf(stderr, "[conn_close] Unable to close connection socket\n");
exit(EXIT_FAILURE);
}
}
int conn_configure_tcpalive(conn_t* conn) {
int setsockopt_arg = 1;
if (setsockopt(conn->conn_socket_fd, SOL_SOCKET, SO_KEEPALIVE, &setsockopt_arg, sizeof(setsockopt_arg)) == -1) {
return -1;
}
struct timeval tv = {
.tv_sec = TCPALIVE_IDLE_TIME,
};
if (setsockopt(conn->conn_socket_fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) == -1) {
return -1;
}
setsockopt_arg = TCPALIVE_IDLE_TIME;
if (setsockopt(conn->conn_socket_fd, IPPROTO_TCP, TCP_KEEPIDLE, &setsockopt_arg, sizeof(setsockopt_arg)) == -1) {
return -1;
}
setsockopt_arg = TCPALIVE_CHECK_INTVL;
if (setsockopt(conn->conn_socket_fd, IPPROTO_TCP, TCP_KEEPINTVL, &setsockopt_arg, sizeof(setsockopt_arg)) == -1) {
return -1;
}
setsockopt_arg = TCPALIVE_CHECK_CNT;
if (setsockopt(conn->conn_socket_fd, IPPROTO_TCP, TCP_KEEPCNT, &setsockopt_arg, sizeof(setsockopt_arg)) == -1) {
return -1;
}
return 1;
}
char* conn_read(conn_t* conn, size_t* size) {
size_t sz;
size_t n = recv(conn->conn_socket_fd, &sz, sizeof(sz), 0);
if (n == 0) {
*size = 0;
return NULL;
}
if (n != sizeof(sz)) {
fprintf(stderr, "[conn_read] Failed to read size of msg %lu %d\n", n, errno);
exit(EXIT_FAILURE);
}
char* buf = calloc(sz, sizeof(*buf));
n = recv(conn->conn_socket_fd, buf, sz, MSG_WAITALL);
if ((size_t) n != sz) {
fprintf(stderr, "[conn_read] Failed to read msg\n");
exit(EXIT_FAILURE);
}
*size = sz;
return buf;
}
void conn_write(conn_t* conn, const char* value, size_t sz) {
size_t n = send(conn->conn_socket_fd, &sz, sizeof(sz), MSG_MORE);
if (n != sizeof(sz)) {
fprintf(stderr, "[conn_write] Failed to write size of msg\n");
exit(EXIT_FAILURE);
}
n = send(conn->conn_socket_fd, value, sz, 0);
if (n != sz) {
fprintf(stderr, "[conn_write] Failed to write msg\n");
exit(EXIT_FAILURE);
}
}
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