* HTTP.{cpp,h} * add 'body' member ot HTTPRes * change HTTPRes::to_string() to add 'Date', 'Content-Length' headers and body

HTTP.cpp

@@ -334,12 +334,24 @@ namespace http {
   }
 
   std::string HTTPRes::to_string() {
+    if (version == "HTTP/1.1" && headers.count("Date") == 0) {
+      std::string date;
+      gen_rfc1123_date(date);
+      add_header("Date", date.c_str());
+    }
+    if (status == "OK" && code != 200)
+      status = HTTPCodeToStatus(code); // update
+    if (body.length() > 0 && headers.count("Content-Length") == 0)
+      add_header("Content-Length", std::to_string(body.length()).c_str());
+    /* build response */
     std::stringstream ss;
     ss << version << " " << code << " " << status << CRLF;
     for (auto & h : headers) {
       ss << h.first << ": " << h.second << CRLF;
     }
     ss << CRLF;
+    if (body.length() > 0)
+      ss << body;
     return ss.str();
   }
 

HTTP.h

@@ -85,6 +85,12 @@ namespace http {
     std::string version;
     std::string status;
     unsigned short int code;
+    /** simplifies response generation
+     * If this variable is set:
+     * a) Content-Length header will be added if missing
+     * b) contents of body will be included in response
+     */
+    std::string body;
 
     HTTPRes (): version("HTTP/1.1"), status("OK"), code(200) {}
 
@@ -96,7 +102,13 @@ namespace http {
     int parse(const char *buf, size_t len);
     int parse(const std::string& buf);
 
-    /** @brief Serialize HTTP response to string */
+    /**
+     * @brief Serialize HTTP response to string
+     * @note If version is set to HTTP/1.1, and Date header is missing,
+     *   it will be generated based on current time and added to headers
+     * @note If body member is set and Content-Length header is missing,
+     *   this header will be added, based on body's length
+     */
     std::string to_string();
 
     /** @brief Checks that response declared as chunked data */