NEW: add http server in BambuStudio

Change-Id: I72d99277187ea0d6b600e741dcc4306bc5f44036
Signed-off-by: Stone Li <stone.li@bambulab.com>
(cherry picked from commit 9ee36044158856e433b19e407094120bd15f4aa0)

src/slic3r/GUI/HttpServer.hpp

@@ -0,0 +1,162 @@
+#ifndef slic3r_Http_App_hpp_
+#define slic3r_Http_App_hpp_
+
+#include <mutex>
+#include <stack>
+
+#include <boost/beast/core.hpp>
+#include <boost/beast/http.hpp>
+#include <boost/beast/version.hpp>
+#include <boost/asio.hpp>
+#include <boost/thread.hpp>
+#include <string>
+#include <memory>
+
+using namespace boost;
+using namespace boost::system;
+using namespace boost::asio;
+
+#define LOCALHOST_URL       "http://localhost:9090"
+
+namespace Slic3r {
+namespace GUI {
+
+class http_headers
+{
+    std::string method;
+    std::string url;
+    std::string version;
+
+    std::map<std::string, std::string> headers;
+
+public:
+
+    std::string get_response();
+
+    int content_length()
+    {
+        auto request = headers.find("content-length");
+        if (request != headers.end())
+        {
+            std::stringstream ssLength(request->second);
+            int content_length;
+            ssLength >> content_length;
+            return content_length;
+        }
+        return 0;
+    }
+
+    void on_read_header(std::string line)
+    {
+        //std::cout << "header: " << line << std::endl;
+
+        std::stringstream ssHeader(line);
+        std::string headerName;
+        std::getline(ssHeader, headerName, ':');
+
+        std::string value;
+        std::getline(ssHeader, value);
+        headers[headerName] = value;
+    }
+
+    void on_read_request_line(std::string line)
+    {
+        std::stringstream ssRequestLine(line);
+        ssRequestLine >> method;
+        ssRequestLine >> url;
+        ssRequestLine >> version;
+
+        std::cout << "request for resource: " << url << std::endl;
+    }
+};
+
+class session
+{
+    asio::streambuf buff;
+    http_headers headers;
+
+    static void read_body(std::shared_ptr<session> pThis)
+    {
+        int nbuffer = 1000;
+        std::shared_ptr<std::vector<char>> bufptr = std::make_shared<std::vector<char>>(nbuffer);
+        asio::async_read(pThis->socket, boost::asio::buffer(*bufptr, nbuffer), [pThis](const boost::beast::error_code& e, std::size_t s)
+            {
+            });
+    }
+
+    static void read_next_line(std::shared_ptr<session> pThis)
+    {
+        asio::async_read_until(pThis->socket, pThis->buff, '\r', [pThis](const boost::beast::error_code& e, std::size_t s)
+            {
+                std::string line, ignore;
+                std::istream stream{ &pThis->buff };
+                std::getline(stream, line, '\r');
+                std::getline(stream, ignore, '\n');
+                pThis->headers.on_read_header(line);
+
+                if (line.length() == 0)
+                {
+                    if (pThis->headers.content_length() == 0)
+                    {
+                        std::shared_ptr<std::string> str = std::make_shared<std::string>(pThis->headers.get_response());
+                        asio::async_write(pThis->socket, boost::asio::buffer(str->c_str(), str->length()), [pThis, str](const boost::beast::error_code& e, std::size_t s)
+                            {
+                                std::cout << "done" << std::endl;
+                            });
+                    }
+                    else
+                    {
+                        pThis->read_body(pThis);
+                    }
+                }
+                else
+                {
+                    pThis->read_next_line(pThis);
+                }
+            });
+    }
+
+    static void read_first_line(std::shared_ptr<session> pThis)
+    {
+        asio::async_read_until(pThis->socket, pThis->buff, '\r', [pThis](const boost::beast::error_code& e, std::size_t s)
+            {
+                std::string line, ignore;
+                std::istream stream{ &pThis->buff };
+                std::getline(stream, line, '\r');
+                std::getline(stream, ignore, '\n');
+                pThis->headers.on_read_request_line(line);
+                pThis->read_next_line(pThis);
+            });
+    }
+
+public:
+
+    ip::tcp::socket socket;
+
+    session(io_service& io_service)
+        :socket(io_service)
+    {
+    }
+
+    static void interact(std::shared_ptr<session> pThis)
+    {
+        read_first_line(pThis);
+    }
+};
+
+class HttpServer {
+public:
+    HttpServer();
+
+    boost::thread    m_http_server_thread;
+    bool             start_http_server = false;
+
+    bool            is_started() { return start_http_server; }
+    void            start();
+    void            stop();
+};
+
+}
+};
+
+#endif