From 38f935ead88fa57f12b1dcf5419d70030c559066 Mon Sep 17 00:00:00 2001
From: winlin <winlin@vip.126.com>
Date: Mon, 20 Jul 2020 20:59:28 +0800
Subject: [PATCH] Support get hostname

---
 trunk/src/protocol/srs_service_utility.cpp | 18 ++++++++++++++++++
 trunk/src/protocol/srs_service_utility.hpp |  3 +++
 2 files changed, 21 insertions(+)

diff --git a/trunk/src/protocol/srs_service_utility.cpp b/trunk/src/protocol/srs_service_utility.cpp
index 51ae86ecb..8cdb738ff 100644
--- a/trunk/src/protocol/srs_service_utility.cpp
+++ b/trunk/src/protocol/srs_service_utility.cpp
@@ -382,3 +382,21 @@ string srs_get_original_ip(ISrsHttpMessage* r)
     return "";
 }
 
+
+std::string _srs_system_hostname;
+
+string srs_get_system_hostname()
+{
+    if (!_srs_system_hostname.empty()) {
+        return _srs_system_hostname;
+    }
+
+    char buf[256];
+    if (-1 == gethostname(buf, sizeof(buf))) {
+        srs_warn("gethostbyname fail");
+        return "";
+    }
+
+    _srs_system_hostname = std::string(buf);
+    return _srs_system_hostname;
+}
\ No newline at end of file
diff --git a/trunk/src/protocol/srs_service_utility.hpp b/trunk/src/protocol/srs_service_utility.hpp
index f6c9ccf1b..8b35016fc 100644
--- a/trunk/src/protocol/srs_service_utility.hpp
+++ b/trunk/src/protocol/srs_service_utility.hpp
@@ -76,5 +76,8 @@ extern bool srs_net_device_is_internet(const sockaddr* addr);
 // Get the original ip from query and header by proxy.
 extern std::string srs_get_original_ip(ISrsHttpMessage* r);
 
+// Get hostname
+extern std::string srs_get_system_hostname(void);
+
 #endif