diff options
Diffstat (limited to 'src/interfaces/libpq/libpq-int.h')
| -rw-r--r-- | src/interfaces/libpq/libpq-int.h | 41 |
1 files changed, 35 insertions, 6 deletions
diff --git a/src/interfaces/libpq/libpq-int.h b/src/interfaces/libpq/libpq-int.h index 7007692fb10..854ec89924b 100644 --- a/src/interfaces/libpq/libpq-int.h +++ b/src/interfaces/libpq/libpq-int.h @@ -292,6 +292,30 @@ typedef struct pgDataValue const char *value; /* data value, without zero-termination */ } PGdataValue; +typedef enum pg_conn_host_type +{ + CHT_HOST_NAME, + CHT_HOST_ADDRESS, + CHT_UNIX_SOCKET +} pg_conn_host_type; + +/* + * pg_conn_host stores all information about one of possibly several hosts + * mentioned in the connection string. Derived by splitting the pghost + * on the comma character and then parsing each segment. + */ +typedef struct pg_conn_host +{ + char *host; /* host name or address, or socket path */ + pg_conn_host_type type; /* type of host */ + char *port; /* port number for this host; if not NULL, + * overrrides the PGConn's pgport */ + char *password; /* password for this host, read from the + * password file. only set if the PGconn's + * pgpass field is NULL. */ + struct addrinfo *addrlist; /* list of possible backend addresses */ +} pg_conn_host; + /* * PGconn stores all the state data associated with a single connection * to a backend. @@ -299,13 +323,15 @@ typedef struct pgDataValue struct pg_conn { /* Saved values of connection options */ - char *pghost; /* the machine on which the server is running */ + char *pghost; /* the machine on which the server is running, + * or a path to a UNIX-domain socket, or a + * comma-separated list of machines and/or + * paths, optionally with port suffixes; if + * NULL, use DEFAULT_PGSOCKET_DIR */ char *pghostaddr; /* the numeric IP address of the machine on * which the server is running. Takes * precedence over above. */ char *pgport; /* the server's communication port number */ - char *pgunixsocket; /* the directory of the server's Unix-domain - * socket; if NULL, use DEFAULT_PGSOCKET_DIR */ char *pgtty; /* tty on which the backend messages is * displayed (OBSOLETE, NOT USED) */ char *connect_timeout; /* connection timeout (numeric string) */ @@ -363,6 +389,11 @@ struct pg_conn PGnotify *notifyHead; /* oldest unreported Notify msg */ PGnotify *notifyTail; /* newest unreported Notify msg */ + /* Support for multiple hosts in connection string */ + int nconnhost; /* # of possible hosts */ + int whichhost; /* host we're currently considering */ + pg_conn_host *connhost; /* details about each possible host */ + /* Connection data */ pgsocket sock; /* FD for socket, PGINVALID_SOCKET if * unconnected */ @@ -378,9 +409,7 @@ struct pg_conn bool sigpipe_flag; /* can we mask SIGPIPE via MSG_NOSIGNAL? */ /* Transient state needed while establishing connection */ - struct addrinfo *addrlist; /* list of possible backend addresses */ - struct addrinfo *addr_cur; /* the one currently being tried */ - int addrlist_family; /* needed to know how to free addrlist */ + struct addrinfo *addr_cur; /* backend address currently being tried */ PGSetenvStatusType setenv_state; /* for 2.0 protocol only */ const PQEnvironmentOption *next_eo; bool send_appname; /* okay to send application_name? */ |