From 09fdf4eacd49606601f539edf3d63f16b9d64415 Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Thu, 8 Oct 2020 21:37:42 -0400
Subject: [PATCH] Fix #685

---
 httplib.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/httplib.h b/httplib.h
index 7b29f5f..a881cec 100644
--- a/httplib.h
+++ b/httplib.h
@@ -4881,7 +4881,10 @@ inline bool ClientImpl::write_request(Stream &strm, const Request &req,
       auto length = std::to_string(req.content_length);
       headers.emplace("Content-Length", length);
     } else {
-      headers.emplace("Content-Length", "0");
+      if (req.method == "POST" || req.method == "PUT" ||
+          req.method == "PATCH") {
+        headers.emplace("Content-Length", "0");
+      }
     }
   } else {
     if (!req.has_header("Content-Type")) {
@@ -5844,7 +5847,7 @@ inline void SSLClient::set_ca_cert_path(const char *ca_cert_file_path,
 
 inline void SSLClient::set_ca_cert_store(X509_STORE *ca_cert_store) {
   if (ca_cert_store) {
-    if(ctx_) {
+    if (ctx_) {
       if (SSL_CTX_get_cert_store(ctx_) != ca_cert_store) {
         // Free memory allocated for old cert and use new store `ca_cert_store`
         SSL_CTX_set_cert_store(ctx_, ca_cert_store);