5 #include <sys/socket.h>
7 #include <netinet/tcp.h>
10 static memcached_return
set_hostinfo(memcached_server_st
*server
)
14 if ((h
= gethostbyname(server
->hostname
)) == NULL
)
16 return MEMCACHED_HOST_LOCKUP_FAILURE
;
19 server
->servAddr
.sin_family
= h
->h_addrtype
;
20 memcpy((char *) &server
->servAddr
.sin_addr
.s_addr
, h
->h_addr_list
[0], h
->h_length
);
21 server
->servAddr
.sin_port
= htons(server
->port
);
23 return MEMCACHED_SUCCESS
;
26 static memcached_return
unix_socket_connect(memcached_st
*ptr
, unsigned int server_key
)
28 struct sockaddr_un servAddr
;
31 if (ptr
->hosts
[server_key
].fd
== -1)
33 if ((ptr
->hosts
[server_key
].fd
= socket(AF_UNIX
, SOCK_STREAM
, 0)) < 0)
35 ptr
->cached_errno
= errno
;
36 return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE
;
39 memset(&servAddr
, 0, sizeof (struct sockaddr_un
));
40 servAddr
.sun_family
= AF_UNIX
;
41 strcpy(servAddr
.sun_path
, ptr
->hosts
[server_key
].hostname
); /* Copy filename */
43 addrlen
= strlen(servAddr
.sun_path
) + sizeof(servAddr
.sun_family
);
46 if (connect(ptr
->hosts
[server_key
].fd
,
47 (struct sockaddr
*)&servAddr
,
48 sizeof(servAddr
)) < 0)
51 /* We are spinning waiting on connect */
56 case EISCONN
: /* We were spinning waiting on connect */
59 ptr
->cached_errno
= errno
;
60 return MEMCACHED_ERRNO
;
65 return MEMCACHED_SUCCESS
;
68 static memcached_return
udp_connect(memcached_st
*ptr
, unsigned int server_key
)
70 if (ptr
->hosts
[server_key
].fd
== -1)
72 /* Old connection junk still is in the structure */
73 WATCHPOINT_ASSERT(ptr
->hosts
[server_key
].stack_responses
== 0);
75 if (ptr
->hosts
[server_key
].sockaddr_inited
== MEMCACHED_NOT_ALLOCATED
)
79 rc
= set_hostinfo(&ptr
->hosts
[server_key
]);
80 if (rc
!= MEMCACHED_SUCCESS
)
83 ptr
->hosts
[server_key
].sockaddr_inited
= MEMCACHED_ALLOCATED
;
86 /* Create the socket */
87 if ((ptr
->hosts
[server_key
].fd
= socket(AF_INET
, SOCK_DGRAM
, 0)) < 0)
89 ptr
->cached_errno
= errno
;
90 return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE
;
94 return MEMCACHED_SUCCESS
;
97 static memcached_return
tcp_connect(memcached_st
*ptr
, unsigned int server_key
)
99 if (ptr
->hosts
[server_key
].fd
== -1)
101 /* Old connection junk still is in the structure */
102 WATCHPOINT_ASSERT(ptr
->hosts
[server_key
].stack_responses
== 0);
104 if (ptr
->hosts
[server_key
].servAddr
.sin_family
== 0)
108 rc
= set_hostinfo(&ptr
->hosts
[server_key
]);
109 if (rc
!= MEMCACHED_SUCCESS
)
113 /* Create the socket */
114 if ((ptr
->hosts
[server_key
].fd
= socket(AF_INET
, SOCK_STREAM
, 0)) < 0)
116 ptr
->cached_errno
= errno
;
117 return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE
;
120 /* For the moment, not getting a nonblocking mode will note be fatal */
121 if (ptr
->flags
& MEM_NO_BLOCK
)
125 flags
= fcntl(ptr
->hosts
[server_key
].fd
, F_GETFL
, 0);
127 (void)fcntl(ptr
->hosts
[server_key
].fd
, F_SETFL
, flags
| O_NONBLOCK
);
130 if (ptr
->flags
& MEM_TCP_NODELAY
)
134 setsockopt(ptr
->hosts
[server_key
].fd
, IPPROTO_TCP
, TCP_NODELAY
,
135 &flag
, (socklen_t
)sizeof(int));
140 setsockopt(ptr
->hosts
[server_key
].fd
, SOL_SOCKET
, SO_SNDBUF
,
141 &ptr
->send_size
, (socklen_t
)sizeof(int));
146 setsockopt(ptr
->hosts
[server_key
].fd
, SOL_SOCKET
, SO_SNDBUF
,
147 &ptr
->recv_size
, (socklen_t
)sizeof(int));
150 /* connect to server */
152 if (connect(ptr
->hosts
[server_key
].fd
,
153 (struct sockaddr
*)&ptr
->hosts
[server_key
].servAddr
,
154 sizeof(struct sockaddr
)) < 0)
157 /* We are spinning waiting on connect */
162 case EISCONN
: /* We were spinning waiting on connect */
165 ptr
->cached_errno
= errno
;
166 return MEMCACHED_ERRNO
;
170 WATCHPOINT_ASSERT(ptr
->hosts
[server_key
].stack_responses
== 0);
173 return MEMCACHED_SUCCESS
;
177 memcached_return
memcached_connect(memcached_st
*ptr
, unsigned int server_key
)
179 memcached_return rc
= MEMCACHED_NO_SERVERS
;
180 LIBMEMCACHED_MEMCACHED_CONNECT_START();
182 if (ptr
->connected
== ptr
->number_of_hosts
&& ptr
->number_of_hosts
)
183 return MEMCACHED_SUCCESS
;
185 if (ptr
->hosts
== NULL
|| ptr
->number_of_hosts
== 0)
186 return MEMCACHED_NO_SERVERS
;
188 /* We need to clean up the multi startup piece */
191 rc
= tcp_connect(ptr
, server_key
);
192 switch (ptr
->hosts
[server_key
].type
)
194 case MEMCACHED_CONNECTION_UNKNOWN
:
195 WATCHPOINT_ASSERT(0);
196 rc
= MEMCACHED_NOT_SUPPORTED
;
198 case MEMCACHED_CONNECTION_UDP
:
199 rc
= udp_connect(ptr
, server_key
);
201 case MEMCACHED_CONNECTION_TCP
:
202 rc
= tcp_connect(ptr
, server_key
);
204 case MEMCACHED_CONNECTION_UNIX_SOCKET
:
205 rc
= unix_socket_connect(ptr
, server_key
);
213 for (x
= 0; x
< ptr
->number_of_hosts
; x
++)
215 memcached_return possible_rc
;
217 possible_rc
= MEMCACHED_NOT_SUPPORTED
; /* Remove warning */
219 switch (ptr
->hosts
[x
].type
)
221 case MEMCACHED_CONNECTION_UNKNOWN
:
222 WATCHPOINT_ASSERT(0);
223 possible_rc
= MEMCACHED_NOT_SUPPORTED
;
225 case MEMCACHED_CONNECTION_UDP
:
226 possible_rc
= udp_connect(ptr
, x
);
228 case MEMCACHED_CONNECTION_TCP
:
229 possible_rc
= tcp_connect(ptr
, x
);
231 case MEMCACHED_CONNECTION_UNIX_SOCKET
:
232 possible_rc
= unix_socket_connect(ptr
, x
);
235 rc
= MEMCACHED_SUCCESS
;
237 if (possible_rc
!= MEMCACHED_SUCCESS
)
238 rc
= MEMCACHED_SOME_ERRORS
;
241 LIBMEMCACHED_MEMCACHED_CONNECT_END();