From 7528a95fe1d3b8895158837155268b68eb2f1f65 Mon Sep 17 00:00:00 2001
From: pooler <pooler@litecoinpool.org>
Date: Sun, 9 Jun 2013 18:21:39 +0200
Subject: [PATCH] Perform global libcurl initialization

curl_easy_init() is not thread-safe unless curl_global_init() has
already been called.
It seems that SSL initialization is slow on Windows, so only do that
if the mining server has to be accessed via HTTPS.
Thanks to @martinwguy for pointing this out.
---
 cpu-miner.c | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/cpu-miner.c b/cpu-miner.c
index 858e903..1ad105d 100644
--- a/cpu-miner.c
+++ b/cpu-miner.c
@@ -1244,6 +1244,7 @@ void signal_handler(int sig)
 int main(int argc, char *argv[])
 {
 	struct thr_info *thr;
+	long flags;
 	int i;
 
 	rpc_url = strdup(DEF_RPC_URL);
@@ -1253,6 +1254,20 @@ int main(int argc, char *argv[])
 	/* parse command line */
 	parse_cmdline(argc, argv);
 
+	pthread_mutex_init(&applog_lock, NULL);
+	pthread_mutex_init(&stats_lock, NULL);
+	pthread_mutex_init(&g_work_lock, NULL);
+	pthread_mutex_init(&stratum.sock_lock, NULL);
+	pthread_mutex_init(&stratum.work_lock, NULL);
+
+	flags = strncmp(rpc_url, "https:", 6)
+	      ? (CURL_GLOBAL_ALL & ~CURL_GLOBAL_SSL)
+	      : CURL_GLOBAL_ALL;
+	if (curl_global_init(flags)) {
+		applog(LOG_ERR, "CURL initialization failed");
+		return 1;
+	}
+
 #ifndef WIN32
 	if (opt_background) {
 		i = fork();
@@ -1270,12 +1285,6 @@ int main(int argc, char *argv[])
 	}
 #endif
 
-	pthread_mutex_init(&applog_lock, NULL);
-	pthread_mutex_init(&stats_lock, NULL);
-	pthread_mutex_init(&g_work_lock, NULL);
-	pthread_mutex_init(&stratum.sock_lock, NULL);
-	pthread_mutex_init(&stratum.work_lock, NULL);
-
 #if defined(WIN32)
 	SYSTEM_INFO sysinfo;
 	GetSystemInfo(&sysinfo);