Add an option to ignore redirection requests

cpu-miner.c

@@ -113,6 +113,7 @@ static const char *algo_names[] = {
 bool opt_debug = false;
 bool opt_protocol = false;
 static bool opt_benchmark = false;
+bool opt_redirect = true;
 bool want_longpoll = true;
 bool have_longpoll = false;
 bool want_stratum = true;
@@ -182,6 +183,7 @@ Options:\n\
                           long polling is unavailable, in seconds (default: 5)\n\
       --no-longpoll     disable X-Long-Polling support\n\
       --no-stratum      disable X-Stratum support\n\
+      --no-redirect     ignore requests to change the URL of the mining server\n\
   -q, --quiet           disable per-thread hashmeter output\n\
   -D, --debug           enable debug output\n\
   -P, --protocol-dump   verbose dump of protocol-level activities\n"
@@ -220,6 +222,7 @@ static struct option const options[] = {
 	{ "debug", 0, NULL, 'D' },
 	{ "help", 0, NULL, 'h' },
 	{ "no-longpoll", 0, NULL, 1003 },
+	{ "no-redirect", 0, NULL, 1009 },
 	{ "no-stratum", 0, NULL, 1007 },
 	{ "pass", 1, NULL, 'p' },
 	{ "protocol-dump", 0, NULL, 'P' },
@@ -1233,6 +1236,9 @@ static void parse_arg (int key, char *arg)
 	case 1007:
 		want_stratum = false;
 		break;
+	case 1009:
+		opt_redirect = false;
+		break;
 	case 'S':
 		use_syslog = true;
 		break;

miner.h

@@ -169,6 +169,7 @@ struct work_restart {
 
 extern bool opt_debug;
 extern bool opt_protocol;
+extern bool opt_redirect;
 extern int opt_timeout;
 extern bool want_longpoll;
 extern bool have_longpoll;

minerd.1

@@ -109,6 +109,9 @@ Print a help message and exit.
 \fB\-\-no\-longpoll\fR
 Do not use long polling.
 .TP
+\fB\-\-no\-redirect\fR
+Ignore requests from the server to switch to a different URL.
+.TP
 \fB\-\-no\-stratum\fR
 Do not switch to Stratum, even if the server advertises support for it.
 .TP

util.c

@@ -330,6 +330,7 @@ json_t *json_rpc_call(CURL *curl, const char *url,
 	curl_easy_setopt(curl, CURLOPT_SEEKDATA, &upload_data);
 #endif
 	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_err_str);
+	if (opt_redirect)
 		curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
 	curl_easy_setopt(curl, CURLOPT_TIMEOUT, timeout);
 	curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, resp_hdr_cb);
@@ -1080,6 +1081,7 @@ static bool stratum_set_difficulty(struct stratum_ctx *sctx, json_t *params)
 static bool stratum_reconnect(struct stratum_ctx *sctx, json_t *params)
 {
 	json_t *port_val;
+	char *url;
 	const char *host;
 	int port;
 
@@ -1092,12 +1094,19 @@ static bool stratum_reconnect(struct stratum_ctx *sctx, json_t *params)
 	if (!host || !port)
 		return false;
 
+	url = malloc(32 + strlen(host));
+	sprintf(url, "stratum+tcp://%s:%d", host, port);
+
+	if (!opt_redirect) {
+		applog(LOG_INFO, "Ignoring request to reconnect to %s", url);
+		free(url);
+		return true;
+	}
+
+	applog(LOG_NOTICE, "Server requested reconnection to %s", url);
+
 	free(sctx->url);
-	sctx->url = malloc(32 + strlen(host));
+	sctx->url = url;
-	sprintf(sctx->url, "stratum+tcp://%s:%d", host, port);
-
-	applog(LOG_NOTICE, "Server requested reconnection to %s", sctx->url);
-
 	stratum_disconnect(sctx);
 
 	return true;