lib/curl/Easy: add method SetRequestBody(std::string_view)

src/lib/curl/Easy.hxx

@@ -8,9 +8,10 @@
 
 #include <curl/curl.h>
 
-#include <utility>
-#include <stdexcept>
 #include <cstddef>
+#include <stdexcept>
+#include <string_view>
+#include <utility>
 
 /**
  * An OO wrapper for a "CURL*" (a libCURL "easy" handle).
@@ -167,6 +168,10 @@ public:
 		SetOption(CURLOPT_POSTFIELDSIZE, (long)size);
 	}
 
+	void SetRequestBody(std::string_view s) {
+		SetRequestBody(s.data(), s.size());
+	}
+
 	void SetMimePost(const curl_mime *mime) {
 		SetOption(CURLOPT_MIMEPOST, mime);
 	}