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MXS-1635 Allow using specific address when connecting

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In some cases you might want to use a specific address/interface
when connecting to a server instead of the default one. With the
global parameter 'local_address' it can now be specified which
address to use.
This commit is contained in:
Johan Wikman
2018-01-31 16:14:14 +02:00
parent 7093a5bdf8
commit 7ae931ce9c
5 changed files with 114 additions and 2 deletions
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37
server/core/utils.c
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@ -41,6 +41,7 @@
#include <openssl/sha.h>
#include <maxscale/alloc.h>
#include <maxscale/config.h>
#include <maxscale/dcb.h>
#include <maxscale/log_manager.h>
#include <maxscale/limits.h>
@ -986,15 +987,47 @@ int open_network_socket(enum mxs_socket_type type, struct sockaddr_storage *addr
memcpy(addr, ai->ai_addr, ai->ai_addrlen);
set_port(addr, port);
freeaddrinfo(ai);
if ((type == MXS_SOCKET_NETWORK && !configure_network_socket(so)) ||
(type == MXS_SOCKET_LISTENER && !configure_listener_socket(so)))
{
close(so);
so = -1;
}
}
else if (type == MXS_SOCKET_NETWORK)
{
MXS_CONFIG* config = config_get_global_options();
freeaddrinfo(ai);
if (config->local_address)
{
if ((rc = getaddrinfo(config->local_address, NULL, &hint, &ai)) == 0)
{
struct sockaddr_storage local_address = {};
memcpy(&local_address, ai->ai_addr, ai->ai_addrlen);
freeaddrinfo(ai);
if (bind(so, (struct sockaddr*)&local_address, sizeof(local_address)) == 0)
{
MXS_INFO("Bound connecting socket to \"%s\".", config->local_address);
}
else
{
MXS_ERROR("Could not bind connecting socket to local address \"%s\", "
"connecting to server using default local address: %s",
config->local_address, mxs_strerror(errno));
}
}
else
{
MXS_ERROR("Could not get address information for local address \"%s\", "
"connecting to server using default local address: %s",
config->local_address, mxs_strerror(errno));
}
}
}
}
}
#else