From 40999f0056c44678d33f182154e17f9d0b143498 Mon Sep 17 00:00:00 2001
From: SChernykh <15806605+SChernykh@users.noreply.github.com>
Date: Wed, 21 May 2025 10:34:22 +0200
Subject: [PATCH] Fix: failure to connect to a node if its domain resolves to
 an IPv6 address

---
 src/json_rpc_request.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/json_rpc_request.cpp b/src/json_rpc_request.cpp
index d7caf4b..5a415ee 100644
--- a/src/json_rpc_request.cpp
+++ b/src/json_rpc_request.cpp
@@ -111,8 +111,10 @@ CurlContext::CurlContext(const std::string& address, int port, const std::string
 		(void)ssl_fingerprint;
 #endif
 
+		const bool is_v6 = (address.find(':') != std::string::npos);
+
 		log::Stream s(buf);
-		s << protocol << address << ':' << port;
+		s << protocol << (is_v6 ? "[" : "") << address << (is_v6 ? "]:" : ":") << port;
 
 		if (!m_req.empty() && (m_req.front() == '/')) {
 			s << m_req.c_str() << '\0';