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Add API to register callback to set socket options

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The registered callback function will be called before connect() is
called on the socket, allowing tweaking of much more than just keepalive
settings.

This deprecates xmpp_conn_set_keepalive().

Includes helper/example callback function to set default keepalive
parameters that some library users may find useful.
This commit is contained in:
Stu Tomlinson
2022-03-16 11:28:09 +00:00
parent 97b1452211
commit 06afe3d1c2
10 changed files with 356 additions and 64 deletions
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84
examples/bot.c
View File

@@ -142,21 +142,66 @@ void conn_handler(xmpp_conn_t *conn,
}
}
static void usage(int exit_code)
{
fprintf(stderr,
"Usage: bot [options] <jid> <pass>\n\n"
"Options:\n"
" --jid <jid> The JID to use to authenticate.\n"
" --pass <pass> The password of the JID.\n"
" --tcp-keepalive Configure TCP keepalive.\n"
" --disable-tls Disable TLS.\n"
" --mandatory-tls Deny plaintext connection.\n"
" --trust-tls Trust TLS certificate.\n"
" --legacy-ssl Use old style SSL.\n"
" --legacy-auth Allow legacy authentication.\n"
"Note: --disable-tls conflicts with --mandatory-tls or "
"--legacy-ssl\n");
exit(exit_code);
}
int main(int argc, char **argv)
{
xmpp_ctx_t *ctx;
xmpp_conn_t *conn;
xmpp_log_t *log;
char *jid, *pass;
char *jid = NULL, *password = NULL, *host = NULL;
long flags = 0;
int i, tcp_keepalive = 0;
unsigned long port = 0;
/* take a jid and password on the command line */
if (argc != 3) {
fprintf(stderr, "Usage: bot <jid> <pass>\n\n");
return 1;
for (i = 1; i < argc; ++i) {
if (strcmp(argv[i], "--help") == 0)
usage(0);
else if (strcmp(argv[i], "--disable-tls") == 0)
flags |= XMPP_CONN_FLAG_DISABLE_TLS;
else if (strcmp(argv[i], "--mandatory-tls") == 0)
flags |= XMPP_CONN_FLAG_MANDATORY_TLS;
else if (strcmp(argv[i], "--trust-tls") == 0)
flags |= XMPP_CONN_FLAG_TRUST_TLS;
else if (strcmp(argv[i], "--legacy-ssl") == 0)
flags |= XMPP_CONN_FLAG_LEGACY_SSL;
else if (strcmp(argv[i], "--legacy-auth") == 0)
flags |= XMPP_CONN_FLAG_LEGACY_AUTH;
else if ((strcmp(argv[i], "--jid") == 0) && (++i < argc))
jid = argv[i];
else if ((strcmp(argv[i], "--pass") == 0) && (++i < argc))
password = argv[i];
else if (strcmp(argv[i], "--tcp-keepalive") == 0)
tcp_keepalive = 1;
else
break;
}
if ((!jid) || (argc - i) > 2) {
usage(1);
}
jid = argv[1];
pass = argv[2];
if (i < argc)
host = argv[i];
if (i + 1 < argc)
port = strtoul(argv[i + 1], NULL, 0);
/* init library */
xmpp_initialize();
@@ -169,23 +214,26 @@ int main(int argc, char **argv)
/* create a connection */
conn = xmpp_conn_new(ctx);
/*
* also you can disable TLS support or force legacy SSL
* connection without STARTTLS
*
* see xmpp_conn_set_flags() or examples/basic.c
*/
/* configure connection properties (optional) */
xmpp_conn_set_flags(conn, flags);
/* setup authentication information */
xmpp_conn_set_jid(conn, jid);
xmpp_conn_set_pass(conn, pass);
if (jid)
xmpp_conn_set_jid(conn, jid);
if (password)
xmpp_conn_set_pass(conn, password);
/* enable TCP keepalive, using canned callback function */
if (tcp_keepalive)
xmpp_conn_set_sockopt_callback(conn, xmpp_sockopt_cb_keepalive);
/* initiate connection */
xmpp_connect_client(conn, NULL, 0, conn_handler, ctx);
if (xmpp_connect_client(conn, host, port, conn_handler, ctx) == XMPP_EOK) {
/* enter the event loop -
our connect handler will trigger an exit */
xmpp_run(ctx);
/* enter the event loop -
our connect handler will trigger an exit */
xmpp_run(ctx);
}
/* release our connection and context */
xmpp_conn_release(conn);