From 8fe15035d1d08e2e628be26f73044baa58e459c4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=A6=8C=EA=A6=AB=EA=A6=B6=EA=A6=8F=EA=A7=80=EA=A6=A6?=
 =?UTF-8?q?=EA=A6=BF=EA=A6=A7=EA=A6=AE=EA=A6=91=EA=A6=A9=EA=A6=AD=EA=A7=80?=
 <erik@darapsa.co.id>
Date: Sun, 14 Nov 2021 11:10:43 +0800
Subject: One handle for every thread

See libcurl-tutorial(3) manual page, "Handle the Easy libcurl".
---
 client.c            | 20 +++++++-------------
 icclient/typedefs.h |  2 ++
 request.c           | 15 +++++++++++----
 3 files changed, 20 insertions(+), 17 deletions(-)

diff --git a/client.c b/client.c
index b46f973..d7c8f70 100644
--- a/client.c
+++ b/client.c
@@ -1,8 +1,5 @@
 #include <stdlib.h>
 #include <string.h>
-#ifndef __EMSCRIPTEN__
-#include <curl/curl.h>
-#endif
 #include "request.h"
 #include "icclient.h"
 
@@ -11,7 +8,7 @@ char *image_dir;
 emscripten_fetch_attr_t attr;
 #else
 char *sampleurl;
-CURL *curl;
+char *cainfo = NULL;
 #endif
 
 extern void handle_results(icclient_response *);
@@ -31,14 +28,10 @@ void icclient_init(const char *url, const char *dir, const char *certificate)
 	if (append)
 		strcat(sampleurl, "/");
 	curl_global_init(CURL_GLOBAL_SSL);
-	curl = curl_easy_init();
-	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
-	curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "");
-	if (certificate)
-		curl_easy_setopt(curl, CURLOPT_CAINFO, certificate);
-#ifdef DEBUG
-	curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
-#endif
+	if (certificate) {
+		cainfo = malloc(strlen(certificate) + 1);
+		strcpy(cainfo, certificate);
+	}
 #endif
 }
 
@@ -98,6 +91,7 @@ void icclient_free_response(icclient_response *response)
 	emscripten_fetch_close(response);
 #else
 	free(response->data);
+	curl_easy_cleanup(response->curl);
 	free(response);
 #endif
 }
@@ -106,8 +100,8 @@ void icclient_cleanup()
 {
 	free(image_dir);
 #ifndef __EMSCRIPTEN__
+	free(cainfo);
 	free(sampleurl);
-	curl_easy_cleanup(curl);
 	curl_global_cleanup();
 #endif
 }
diff --git a/icclient/typedefs.h b/icclient/typedefs.h
index 6876144..4bb6dcc 100644
--- a/icclient/typedefs.h
+++ b/icclient/typedefs.h
@@ -6,10 +6,12 @@
 #include <emscripten/fetch.h>
 typedef emscripten_fetch_t icclient_response;
 #else
+#include <curl/curl.h>
 typedef struct {
 	void *userData;
 	char *data;
 	size_t numBytes;
+	CURL *curl;
 } icclient_response;
 #endif
 
diff --git a/request.c b/request.c
index 06c0d4f..34bff9c 100644
--- a/request.c
+++ b/request.c
@@ -17,10 +17,9 @@ extern emscripten_fetch_attr_t attr;
 #include <curl/curl.h>
 
 extern char *sampleurl;
-extern CURL *curl;
+extern char *cainfo;
 
 struct container {
-	CURL *curl;
 	struct curl_httppost *post;
 	void (*handler)(icclient_response *);
 	icclient_response *response;
@@ -40,7 +39,7 @@ static int async(void *arg)
 {
 	int ret = thrd_success;
 	struct container *container = (struct container *)arg;
-	CURLcode res = curl_easy_perform(container->curl);
+	CURLcode res = curl_easy_perform(container->response->curl);
 	if (container->post)
 		curl_formfree(container->post);
 	if (res == CURLE_OK && container->handler)
@@ -149,6 +148,14 @@ void request(void (*handler)(icclient_response *), void (*callback)(void *), str
 	}
 	emscripten_fetch(&attr, url);
 #else
+	CURL *curl = curl_easy_init();
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
+	curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "");
+	if (cainfo)
+		curl_easy_setopt(curl, CURLOPT_CAINFO, cainfo);
+#ifdef DEBUG
+	curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
+#endif
 	curl_easy_setopt(curl, CURLOPT_URL, url);
 	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, append);
 	icclient_response *response = malloc(sizeof(icclient_response));
@@ -170,7 +177,7 @@ void request(void (*handler)(icclient_response *), void (*callback)(void *), str
 	} else
 		curl_easy_setopt(curl, CURLOPT_HTTPGET, 1L);
 	struct container *container = malloc(sizeof(struct container));
-	container->curl = curl;
+	response->curl = curl;
 	container->post = post;
 	container->handler = handler;
 	container->response = response;
-- 
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