1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
#include "./common.h"
const uint32_t TCPALIVE_IDLE_TIME = 30;
const uint32_t TCPALIVE_CHECK_INTVL = 10;
const uint32_t TCPALIVE_CHECK_CNT = 5;
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;
}
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;
int 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 %d %d\n", n, errno);
exit(EXIT_FAILURE);
}
char* buf = calloc(sz, sizeof(*buf));
size_t readed = 0;
while (readed < sz) {
int n = recv(conn->conn_socket_fd, buf + readed, sz - readed, MSG_WAITALL);
if (n == -1) {
fprintf(stderr, "[conn_read] Failed to read msg\n");
exit(EXIT_FAILURE);
}
readed += n;
}
*size = readed;
return buf;
}
void conn_write(conn_t* conn, const char* value, size_t sz) {
int n = write(conn->conn_socket_fd, &sz, sizeof(sz));
if (n != sizeof(sz)) {
fprintf(stderr, "[conn_write] Failed to write size of msg\n");
exit(EXIT_FAILURE);
}
size_t written = 0;
while (written < sz) {
int n = write(conn->conn_socket_fd, value + written, sz - written);
if (n == -1) {
fprintf(stderr, "[conn_write] Failed to write msg\n");
exit(EXIT_FAILURE);
}
written += n;
}
}
|
