Add submodules

1 files changed, 2344 insertions, 0 deletions

diff --git a/externals/httplib/httplib.h b/externals/httplib/httplib.h
new file mode 100644
index 000000000..dd9afe693
--- /dev/null
+++ b/externals/httplib/httplib.h
@@ -0,0 +1,2344 @@
+//
+//  httplib.h
+//
+//  Copyright (c) 2017 Yuji Hirose. All rights reserved.
+//  MIT License
+//
+
+#ifndef _CPPHTTPLIB_HTTPLIB_H_
+#define _CPPHTTPLIB_HTTPLIB_H_
+
+#ifdef _WIN32
+#ifndef _CRT_SECURE_NO_WARNINGS
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+#ifndef _CRT_NONSTDC_NO_DEPRECATE
+#define _CRT_NONSTDC_NO_DEPRECATE
+#endif
+
+#if defined(_MSC_VER) && _MSC_VER < 1900
+#define snprintf _snprintf_s
+#endif
+
+#ifndef S_ISREG
+#define S_ISREG(m)  (((m)&S_IFREG)==S_IFREG)
+#endif
+#ifndef S_ISDIR
+#define S_ISDIR(m)  (((m)&S_IFDIR)==S_IFDIR)
+#endif
+
+#include <io.h>
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+#undef min
+#undef max
+
+#ifndef strcasecmp
+#define strcasecmp _stricmp
+#endif
+
+typedef SOCKET socket_t;
+#else
+#include <pthread.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <cstring>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <signal.h>
+#include <sys/socket.h>
+#include <sys/select.h>
+
+typedef int socket_t;
+#define INVALID_SOCKET (-1)
+#endif
+
+#include <fstream>
+#include <functional>
+#include <map>
+#include <memory>
+#include <mutex>
+#include <regex>
+#include <string>
+#include <thread>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <assert.h>
+
+#ifdef CPPHTTPLIB_OPENSSL_SUPPORT
+#include <openssl/ssl.h>
+#endif
+
+#ifdef CPPHTTPLIB_ZLIB_SUPPORT
+#include <zlib.h>
+#endif
+
+/*
+ * Configuration
+ */
+#define CPPHTTPLIB_KEEPALIVE_TIMEOUT_SECOND 5
+#define CPPHTTPLIB_KEEPALIVE_TIMEOUT_USECOND 0
+
+namespace httplib
+{
+
+namespace detail {
+
+struct ci {
+    bool operator() (const std::string & s1, const std::string & s2) const {
+        return std::lexicographical_compare(
+                s1.begin(), s1.end(),
+                s2.begin(), s2.end(),
+                [](char c1, char c2) {
+                    return ::tolower(c1) < ::tolower(c2);
+                });
+    }
+};
+
+} // namespace detail
+
+enum class HttpVersion { v1_0 = 0, v1_1 };
+
+typedef std::multimap<std::string, std::string, detail::ci>  Headers;
+
+template<typename uint64_t, typename... Args>
+std::pair<std::string, std::string> make_range_header(uint64_t value, Args... args);
+
+typedef std::multimap<std::string, std::string>                Params;
+typedef std::smatch                                            Match;
+typedef std::function<void (uint64_t current, uint64_t total)> Progress;
+
+struct MultipartFile {
+    std::string filename;
+    std::string content_type;
+    size_t offset = 0;
+    size_t length = 0;
+};
+typedef std::multimap<std::string, MultipartFile> MultipartFiles;
+
+struct Request {
+    std::string    version;
+    std::string    method;
+    std::string    target;
+    std::string    path;
+    Headers        headers;
+    std::string    body;
+    Params         params;
+    MultipartFiles files;
+    Match          matches;
+
+    Progress       progress;
+
+    bool has_header(const char* key) const;
+    std::string get_header_value(const char* key) const;
+    void set_header(const char* key, const char* val);
+
+    bool has_param(const char* key) const;
+    std::string get_param_value(const char* key) const;
+
+    bool has_file(const char* key) const;
+    MultipartFile get_file_value(const char* key) const;
+};
+
+struct Response {
+    std::string version;
+    int         status;
+    Headers     headers;
+    std::string body;
+
+    bool has_header(const char* key) const;
+    std::string get_header_value(const char* key) const;
+    void set_header(const char* key, const char* val);
+
+    void set_redirect(const char* uri);
+    void set_content(const char* s, size_t n, const char* content_type);
+    void set_content(const std::string& s, const char* content_type);
+
+    Response() : status(-1) {}
+};
+
+class Stream {
+public:
+    virtual ~Stream() {}
+    virtual int read(char* ptr, size_t size) = 0;
+    virtual int write(const char* ptr, size_t size1) = 0;
+    virtual int write(const char* ptr) = 0;
+    virtual std::string get_remote_addr() = 0;
+
+    template <typename ...Args>
+    void write_format(const char* fmt, const Args& ...args);
+};
+
+class SocketStream : public Stream {
+public:
+    SocketStream(socket_t sock);
+    virtual ~SocketStream();
+
+    virtual int read(char* ptr, size_t size);
+    virtual int write(const char* ptr, size_t size);
+    virtual int write(const char* ptr);
+    virtual std::string get_remote_addr();
+
+private:
+    socket_t sock_;
+};
+
+class Server {
+public:
+    typedef std::function<void (const Request&, Response&)> Handler;
+    typedef std::function<void (const Request&, const Response&)> Logger;
+
+    Server();
+
+    virtual ~Server();
+
+    virtual bool is_valid() const;
+
+    Server& Get(const char* pattern, Handler handler);
+    Server& Post(const char* pattern, Handler handler);
+
+    Server& Put(const char* pattern, Handler handler);
+    Server& Delete(const char* pattern, Handler handler);
+    Server& Options(const char* pattern, Handler handler);
+
+    bool set_base_dir(const char* path);
+
+    void set_error_handler(Handler handler);
+    void set_logger(Logger logger);
+
+    void set_keep_alive_max_count(size_t count);
+
+    int bind_to_any_port(const char* host, int socket_flags = 0);
+    bool listen_after_bind();
+
+    bool listen(const char* host, int port, int socket_flags = 0);
+
+    bool is_running() const;
+    void stop();
+
+protected:
+    bool process_request(Stream& strm, bool last_connection, bool& connection_close);
+
+    size_t keep_alive_max_count_;
+
+private:
+    typedef std::vector<std::pair<std::regex, Handler>> Handlers;
+
+    socket_t create_server_socket(const char* host, int port, int socket_flags) const;
+    int bind_internal(const char* host, int port, int socket_flags);
+    bool listen_internal();
+
+    bool routing(Request& req, Response& res);
+    bool handle_file_request(Request& req, Response& res);
+    bool dispatch_request(Request& req, Response& res, Handlers& handlers);
+
+    bool parse_request_line(const char* s, Request& req);
+    void write_response(Stream& strm, bool last_connection, const Request& req, Response& res);
+
+    virtual bool read_and_close_socket(socket_t sock);
+
+    bool        is_running_;
+    socket_t    svr_sock_;
+    std::string base_dir_;
+    Handlers    get_handlers_;
+    Handlers    post_handlers_;
+    Handlers    put_handlers_;
+    Handlers    delete_handlers_;
+    Handlers    options_handlers_;
+    Handler     error_handler_;
+    Logger      logger_;
+
+    // TODO: Use thread pool...
+    std::mutex  running_threads_mutex_;
+    int         running_threads_;
+};
+
+class Client {
+public:
+    Client(
+            const char* host,
+            int port = 80,
+            size_t timeout_sec = 300);
+
+    virtual ~Client();
+
+    virtual bool is_valid() const;
+
+    std::shared_ptr<Response> Get(const char* path, Progress progress = nullptr);
+    std::shared_ptr<Response> Get(const char* path, const Headers& headers, Progress progress = nullptr);
+
+    std::shared_ptr<Response> Head(const char* path);
+    std::shared_ptr<Response> Head(const char* path, const Headers& headers);
+
+    std::shared_ptr<Response> Post(const char* path, const std::string& body, const char* content_type);
+    std::shared_ptr<Response> Post(const char* path, const Headers& headers, const std::string& body, const char* content_type);
+
+    std::shared_ptr<Response> Post(const char* path, const Params& params);
+    std::shared_ptr<Response> Post(const char* path, const Headers& headers, const Params& params);
+
+    std::shared_ptr<Response> Put(const char* path, const std::string& body, const char* content_type);
+    std::shared_ptr<Response> Put(const char* path, const Headers& headers, const std::string& body, const char* content_type);
+
+    std::shared_ptr<Response> Delete(const char* path);
+    std::shared_ptr<Response> Delete(const char* path, const Headers& headers);
+
+    std::shared_ptr<Response> Options(const char* path);
+    std::shared_ptr<Response> Options(const char* path, const Headers& headers);
+
+    bool send(Request& req, Response& res);
+
+protected:
+    bool process_request(Stream& strm, Request& req, Response& res, bool& connection_close);
+
+    const std::string host_;
+    const int         port_;
+    size_t            timeout_sec_;
+    const std::string host_and_port_;
+
+private:
+    socket_t create_client_socket() const;
+    bool read_response_line(Stream& strm, Response& res);
+    void write_request(Stream& strm, Request& req);
+
+    virtual bool read_and_close_socket(socket_t sock, Request& req, Response& res);
+};
+
+#ifdef CPPHTTPLIB_OPENSSL_SUPPORT
+class SSLSocketStream : public Stream {
+public:
+    SSLSocketStream(socket_t sock, SSL* ssl);
+    virtual ~SSLSocketStream();
+
+    virtual int read(char* ptr, size_t size);
+    virtual int write(const char* ptr, size_t size);
+    virtual int write(const char* ptr);
+    virtual std::string get_remote_addr();
+
+private:
+    socket_t sock_;
+    SSL* ssl_;
+};
+
+class SSLServer : public Server {
+public:
+    SSLServer(
+            const char* cert_path, const char* private_key_path);
+
+    virtual ~SSLServer();
+
+    virtual bool is_valid() const;
+
+private:
+    virtual bool read_and_close_socket(socket_t sock);
+
+    SSL_CTX* ctx_;
+    std::mutex ctx_mutex_;
+};
+
+class SSLClient : public Client {
+public:
+    SSLClient(
+            const char* host,
+            int port = 80,
+            size_t timeout_sec = 300);
+
+    virtual ~SSLClient();
+
+    virtual bool is_valid() const;
+
+private:
+    virtual bool read_and_close_socket(socket_t sock, Request& req, Response& res);
+
+    SSL_CTX* ctx_;
+    std::mutex ctx_mutex_;
+};
+#endif
+
+/*
+ * Implementation
+ */
+namespace detail {
+
+template <class Fn>
+void split(const char* b, const char* e, char d, Fn fn)
+{
+    int i = 0;
+    int beg = 0;
+
+    while (e ? (b + i != e) : (b[i] != '\0')) {
+        if (b[i] == d) {
+            fn(&b[beg], &b[i]);
+            beg = i + 1;
+        }
+        i++;
+    }
+
+    if (i) {
+        fn(&b[beg], &b[i]);
+    }
+}
+
+// NOTE: until the read size reaches `fixed_buffer_size`, use `fixed_buffer`
+// to store data. The call can set memory on stack for performance.
+class stream_line_reader {
+public:
+    stream_line_reader(Stream& strm, char* fixed_buffer, size_t fixed_buffer_size)
+            : strm_(strm)
+            , fixed_buffer_(fixed_buffer)
+            , fixed_buffer_size_(fixed_buffer_size) {
+    }
+
+    const char* ptr() const {
+        if (glowable_buffer_.empty()) {
+            return fixed_buffer_;
+        } else {
+            return glowable_buffer_.data();
+        }
+    }
+
+    bool getline() {
+        fixed_buffer_used_size_ = 0;
+        glowable_buffer_.clear();
+
+        for (size_t i = 0; ; i++) {
+            char byte;
+            auto n = strm_.read(&byte, 1);
+
+            if (n < 0) {
+                return false;
+            } else if (n == 0) {
+                if (i == 0) {
+                    return false;
+                } else {
+                    break;
+                }
+            }
+
+            append(byte);
+
+            if (byte == '\n') {
+                break;
+            }
+        }
+
+        return true;
+    }
+
+private:
+    void append(char c) {
+        if (fixed_buffer_used_size_ < fixed_buffer_size_ - 1) {
+            fixed_buffer_[fixed_buffer_used_size_++] = c;
+            fixed_buffer_[fixed_buffer_used_size_] = '\0';
+        } else {
+            if (glowable_buffer_.empty()) {
+                assert(fixed_buffer_[fixed_buffer_used_size_] == '\0');
+                glowable_buffer_.assign(fixed_buffer_, fixed_buffer_used_size_);
+            }
+            glowable_buffer_ += c;
+        }
+    }
+
+    Stream& strm_;
+    char* fixed_buffer_;
+    const size_t fixed_buffer_size_;
+    size_t fixed_buffer_used_size_;
+    std::string glowable_buffer_;
+};
+
+inline int close_socket(socket_t sock)
+{
+#ifdef _WIN32
+    return closesocket(sock);
+#else
+    return close(sock);
+#endif
+}
+
+inline int select_read(socket_t sock, size_t sec, size_t usec)
+{
+    fd_set fds;
+    FD_ZERO(&fds);
+    FD_SET(sock, &fds);
+
+    timeval tv;
+    tv.tv_sec = sec;
+    tv.tv_usec = usec;
+
+    return select(sock + 1, &fds, NULL, NULL, &tv);
+}
+
+inline bool wait_until_socket_is_ready(socket_t sock, size_t sec, size_t usec)
+{
+    fd_set fdsr;
+    FD_ZERO(&fdsr);
+    FD_SET(sock, &fdsr);
+
+    auto fdsw = fdsr;
+    auto fdse = fdsr;
+
+    timeval tv;
+    tv.tv_sec = sec;
+    tv.tv_usec = usec;
+
+    if (select(sock + 1, &fdsr, &fdsw, &fdse, &tv) < 0) {
+        return false;
+    } else if (FD_ISSET(sock, &fdsr) || FD_ISSET(sock, &fdsw)) {
+        int error = 0;
+        socklen_t len = sizeof(error);
+        if (getsockopt(sock, SOL_SOCKET, SO_ERROR, (char*)&error, &len) < 0 || error) {
+            return false;
+        }
+    } else {
+        return false;
+    }
+
+    return true;
+}
+
+template <typename T>
+inline bool read_and_close_socket(socket_t sock, size_t keep_alive_max_count, T callback)
+{
+    bool ret = false;
+
+    if (keep_alive_max_count > 0) {
+        auto count = keep_alive_max_count;
+        while (count > 0 &&
+               detail::select_read(sock,
+                                   CPPHTTPLIB_KEEPALIVE_TIMEOUT_SECOND,
+                                   CPPHTTPLIB_KEEPALIVE_TIMEOUT_USECOND) > 0) {
+            SocketStream strm(sock);
+            auto last_connection = count == 1;
+            auto connection_close = false;
+
+            ret = callback(strm, last_connection, connection_close);
+            if (!ret || connection_close) {
+                break;
+            }
+
+            count--;
+        }
+    } else {
+        SocketStream strm(sock);
+        auto dummy_connection_close = false;
+        ret = callback(strm, true, dummy_connection_close);
+    }
+
+    close_socket(sock);
+    return ret;
+}
+
+inline int shutdown_socket(socket_t sock)
+{
+#ifdef _WIN32
+    return shutdown(sock, SD_BOTH);
+#else
+    return shutdown(sock, SHUT_RDWR);
+#endif
+}
+
+template <typename Fn>
+socket_t create_socket(const char* host, int port, Fn fn, int socket_flags = 0)
+{
+#ifdef _WIN32
+#define SO_SYNCHRONOUS_NONALERT 0x20
+#define SO_OPENTYPE 0x7008
+
+    int opt = SO_SYNCHRONOUS_NONALERT;
+    setsockopt(INVALID_SOCKET, SOL_SOCKET, SO_OPENTYPE, (char*)&opt, sizeof(opt));
+#endif
+
+    // Get address info
+    struct addrinfo hints;
+    struct addrinfo *result;
+
+    memset(&hints, 0, sizeof(struct addrinfo));
+    hints.ai_family = AF_UNSPEC;
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_flags = socket_flags;
+    hints.ai_protocol = 0;
+
+    auto service = std::to_string(port);
+
+    if (getaddrinfo(host, service.c_str(), &hints, &result)) {
+        return INVALID_SOCKET;
+    }
+
+    for (auto rp = result; rp; rp = rp->ai_next) {
+        // Create a socket
+        auto sock = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
+        if (sock == INVALID_SOCKET) {
+            continue;
+        }
+
+        // Make 'reuse address' option available
+        int yes = 1;
+        setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)&yes, sizeof(yes));
+
+        // bind or connect
+        if (fn(sock, *rp)) {
+            freeaddrinfo(result);
+            return sock;
+        }
+
+        close_socket(sock);
+    }
+
+    freeaddrinfo(result);
+    return INVALID_SOCKET;
+}
+
+inline void set_nonblocking(socket_t sock, bool nonblocking)
+{
+#ifdef _WIN32
+    auto flags = nonblocking ? 1UL : 0UL;
+    ioctlsocket(sock, FIONBIO, &flags);
+#else
+    auto flags = fcntl(sock, F_GETFL, 0);
+    fcntl(sock, F_SETFL, nonblocking ? (flags | O_NONBLOCK) : (flags & (~O_NONBLOCK)));
+#endif
+}
+
+inline bool is_connection_error()
+{
+#ifdef _WIN32
+    return WSAGetLastError() != WSAEWOULDBLOCK;
+#else
+    return errno != EINPROGRESS;
+#endif
+}
+
+inline std::string get_remote_addr(socket_t sock) {
+    struct sockaddr_storage addr;
+    socklen_t len = sizeof(addr);
+
+    if (!getpeername(sock, (struct sockaddr*)&addr, &len)) {
+        char ipstr[NI_MAXHOST];
+
+        if (!getnameinfo((struct sockaddr*)&addr, len,
+                         ipstr, sizeof(ipstr), nullptr, 0, NI_NUMERICHOST)) {
+            return ipstr;
+        }
+    }
+
+    return std::string();
+}
+
+inline bool is_file(const std::string& path)
+{
+    struct stat st;
+    return stat(path.c_str(), &st) >= 0 && S_ISREG(st.st_mode);
+}
+
+inline bool is_dir(const std::string& path)
+{
+    struct stat st;
+    return stat(path.c_str(), &st) >= 0 && S_ISDIR(st.st_mode);
+}
+
+inline bool is_valid_path(const std::string& path) {
+    size_t level = 0;
+    size_t i = 0;
+
+    // Skip slash
+    while (i < path.size() && path[i] == '/') {
+        i++;
+    }
+
+    while (i < path.size()) {
+        // Read component
+        auto beg = i;
+        while (i < path.size() && path[i] != '/') {
+            i++;
+        }
+
+        auto len = i - beg;
+        assert(len > 0);
+
+        if (!path.compare(beg, len, ".")) {
+            ;
+        } else if (!path.compare(beg, len, "..")) {
+            if (level == 0) {
+                return false;
+            }
+            level--;
+        } else {
+            level++;
+        }
+
+        // Skip slash
+        while (i < path.size() && path[i] == '/') {
+            i++;
+        }
+    }
+
+    return true;
+}
+
+inline void read_file(const std::string& path, std::string& out)
+{
+    std::ifstream fs(path, std::ios_base::binary);
+    fs.seekg(0, std::ios_base::end);
+    auto size = fs.tellg();
+    fs.seekg(0);
+    out.resize(static_cast<size_t>(size));
+    fs.read(&out[0], size);
+}
+
+inline std::string file_extension(const std::string& path)
+{
+    std::smatch m;
+    auto pat = std::regex("\\.([a-zA-Z0-9]+)$");
+    if (std::regex_search(path, m, pat)) {
+        return m[1].str();
+    }
+    return std::string();
+}
+
+inline const char* find_content_type(const std::string& path)
+{
+    auto ext = file_extension(path);
+    if (ext == "txt") {
+        return "text/plain";
+    } else if (ext == "html") {
+        return "text/html";
+    } else if (ext == "css") {
+        return "text/css";
+    } else if (ext == "jpeg" || ext == "jpg") {
+        return "image/jpg";
+    } else if (ext == "png") {
+        return "image/png";
+    } else if (ext == "gif") {
+        return "image/gif";
+    } else if (ext == "svg") {
+        return "image/svg+xml";
+    } else if (ext == "ico") {
+        return "image/x-icon";
+    } else if (ext == "json") {
+        return "application/json";
+    } else if (ext == "pdf") {
+        return "application/pdf";
+    } else if (ext == "js") {
+        return "application/javascript";
+    } else if (ext == "xml") {
+        return "application/xml";
+    } else if (ext == "xhtml") {
+        return "application/xhtml+xml";
+    }
+    return nullptr;
+}
+
+inline const char* status_message(int status)
+{
+    switch (status) {
+        case 200: return "OK";
+        case 301: return "Moved Permanently";
+        case 302: return "Found";
+        case 303: return "See Other";
+        case 304: return "Not Modified";
+        case 400: return "Bad Request";
+        case 403: return "Forbidden";
+        case 404: return "Not Found";
+        case 415: return "Unsupported Media Type";
+        default:
+        case 500: return "Internal Server Error";
+    }
+}
+
+inline const char* get_header_value(const Headers& headers, const char* key, const char* def)
+{
+    auto it = headers.find(key);
+    if (it != headers.end()) {
+        return it->second.c_str();
+    }
+    return def;
+}
+
+inline int get_header_value_int(const Headers& headers, const char* key, int def)
+{
+    auto it = headers.find(key);
+    if (it != headers.end()) {
+        return std::stoi(it->second);
+    }
+    return def;
+}
+
+inline bool read_headers(Stream& strm, Headers& headers)
+{
+    static std::regex re(R"((.+?):\s*(.+?)\s*\r\n)");
+
+    const auto bufsiz = 2048;
+    char buf[bufsiz];
+
+    stream_line_reader reader(strm, buf, bufsiz);
+
+    for (;;) {
+        if (!reader.getline()) {
+            return false;
+        }
+        if (!strcmp(reader.ptr(), "\r\n")) {
+            break;
+        }
+        std::cmatch m;
+        if (std::regex_match(reader.ptr(), m, re)) {
+            auto key = std::string(m[1]);
+            auto val = std::string(m[2]);
+            headers.emplace(key, val);
+        }
+    }
+
+    return true;
+}
+
+inline bool read_content_with_length(Stream& strm, std::string& out, size_t len, Progress progress)
+{
+    out.assign(len, 0);
+    size_t r = 0;
+    while (r < len){
+        auto n = strm.read(&out[r], len - r);
+        if (n <= 0) {
+            return false;
+        }
+
+        r += n;
+
+        if (progress) {
+            progress(r, len);
+        }
+    }
+
+    return true;
+}
+
+inline bool read_content_without_length(Stream& strm, std::string& out)
+{
+    for (;;) {
+        char byte;
+        auto n = strm.read(&byte, 1);
+        if (n < 0) {
+            return false;
+        } else if (n == 0) {
+            return true;
+        }
+        out += byte;
+    }
+
+    return true;
+}
+
+inline bool read_content_chunked(Stream& strm, std::string& out)
+{
+    const auto bufsiz = 16;
+    char buf[bufsiz];
+
+    stream_line_reader reader(strm, buf, bufsiz);
+
+    if (!reader.getline()) {
+        return false;
+    }
+
+    auto chunk_len = std::stoi(reader.ptr(), 0, 16);
+
+    while (chunk_len > 0){
+        std::string chunk;
+        if (!read_content_with_length(strm, chunk, chunk_len, nullptr)) {
+            return false;
+        }
+
+        if (!reader.getline()) {
+            return false;
+        }
+
+        if (strcmp(reader.ptr(), "\r\n")) {
+            break;
+        }
+
+        out += chunk;
+
+        if (!reader.getline()) {
+            return false;
+        }
+
+        chunk_len = std::stoi(reader.ptr(), 0, 16);
+    }
+
+    if (chunk_len == 0) {
+        // Reader terminator after chunks
+        if (!reader.getline() || strcmp(reader.ptr(), "\r\n"))
+            return false;
+    }
+
+    return true;
+}
+
+template <typename T>
+bool read_content(Stream& strm, T& x, Progress progress = Progress())
+{
+    auto len = get_header_value_int(x.headers, "Content-Length", 0);
+
+    if (len) {
+        return read_content_with_length(strm, x.body, len, progress);
+    } else {
+        const auto& encoding = get_header_value(x.headers, "Transfer-Encoding", "");
+
+        if (!strcasecmp(encoding, "chunked")) {
+            return read_content_chunked(strm, x.body);
+        } else {
+            return read_content_without_length(strm, x.body);
+        }
+    }
+
+    return true;
+}
+
+template <typename T>
+inline void write_headers(Stream& strm, const T& info)
+{
+    for (const auto& x: info.headers) {
+        strm.write_format("%s: %s\r\n", x.first.c_str(), x.second.c_str());
+    }
+    strm.write("\r\n");
+}
+
+inline std::string encode_url(const std::string& s)
+{
+    std::string result;
+
+    for (auto i = 0; s[i]; i++) {
+        switch (s[i]) {
+            case ' ':  result += "+"; break;
+            case '\'': result += "%27"; break;
+            case ',':  result += "%2C"; break;
+            case ':':  result += "%3A"; break;
+            case ';':  result += "%3B"; break;
+            default:
+                if (s[i] < 0) {
+                    result += '%';
+                    char hex[4];
+                    size_t len = snprintf(hex, sizeof(hex) - 1, "%02X", (unsigned char)s[i]);
+                    assert(len == 2);
+                    result.append(hex, len);
+                } else {
+                    result += s[i];
+                }
+                break;
+        }
+    }
+
+    return result;
+}
+
+inline bool is_hex(char c, int& v)
+{
+    if (0x20 <= c && isdigit(c)) {
+        v = c - '0';
+        return true;
+    } else if ('A' <= c && c <= 'F') {
+        v = c - 'A' + 10;
+        return true;
+    } else if ('a' <= c && c <= 'f') {
+        v = c - 'a' + 10;
+        return true;
+    }
+    return false;
+}
+
+inline bool from_hex_to_i(const std::string& s, size_t i, size_t cnt, int& val)
+{
+    if (i >= s.size()) {
+        return false;
+    }
+
+    val = 0;
+    for (; cnt; i++, cnt--) {
+        if (!s[i]) {
+            return false;
+        }
+        int v = 0;
+        if (is_hex(s[i], v)) {
+            val = val * 16 + v;
+        } else {
+            return false;
+        }
+    }
+    return true;
+}
+
+inline size_t to_utf8(int code, char* buff)
+{
+    if (code < 0x0080) {
+        buff[0] = (code & 0x7F);
+        return 1;
+    } else if (code < 0x0800) {
+        buff[0] = (0xC0 | ((code >> 6) & 0x1F));
+        buff[1] = (0x80 | (code & 0x3F));
+        return 2;
+    } else if (code < 0xD800) {
+        buff[0] = (0xE0 | ((code >> 12) & 0xF));
+        buff[1] = (0x80 | ((code >> 6) & 0x3F));
+        buff[2] = (0x80 | (code & 0x3F));
+        return 3;
+    } else if (code < 0xE000)  { // D800 - DFFF is invalid...
+        return 0;
+    } else if (code < 0x10000) {
+        buff[0] = (0xE0 | ((code >> 12) & 0xF));
+        buff[1] = (0x80 | ((code >> 6) & 0x3F));
+        buff[2] = (0x80 | (code & 0x3F));
+        return 3;
+    } else if (code < 0x110000) {
+        buff[0] = (0xF0 | ((code >> 18) & 0x7));
+        buff[1] = (0x80 | ((code >> 12) & 0x3F));
+        buff[2] = (0x80 | ((code >> 6) & 0x3F));
+        buff[3] = (0x80 | (code & 0x3F));
+        return 4;
+    }
+
+    // NOTREACHED
+    return 0;
+}
+
+inline std::string decode_url(const std::string& s)
+{
+    std::string result;
+
+    for (size_t i = 0; i < s.size(); i++) {
+        if (s[i] == '%' && i + 1 < s.size()) {
+            if (s[i + 1] == 'u') {
+                int val = 0;
+                if (from_hex_to_i(s, i + 2, 4, val)) {
+                    // 4 digits Unicode codes
+                    char buff[4];
+                    size_t len = to_utf8(val, buff);
+                    if (len > 0) {
+                        result.append(buff, len);
+                    }
+                    i += 5; // 'u0000'
+                } else {
+                    result += s[i];
+                }
+            } else {
+                int val = 0;
+                if (from_hex_to_i(s, i + 1, 2, val)) {
+                    // 2 digits hex codes
+                    result += val;
+                    i += 2; // '00'
+                } else {
+                    result += s[i];
+                }
+            }
+        } else if (s[i] == '+') {
+            result += ' ';
+        } else {
+            result += s[i];
+        }
+    }
+
+    return result;
+}
+
+inline void parse_query_text(const std::string& s, Params& params)
+{
+    split(&s[0], &s[s.size()], '&', [&](const char* b, const char* e) {
+        std::string key;
+        std::string val;
+        split(b, e, '=', [&](const char* b, const char* e) {
+            if (key.empty()) {
+                key.assign(b, e);
+            } else {
+                val.assign(b, e);
+            }
+        });
+        params.emplace(key, decode_url(val));
+    });
+}
+
+inline bool parse_multipart_boundary(const std::string& content_type, std::string& boundary)
+{
+    auto pos = content_type.find("boundary=");
+    if (pos == std::string::npos) {
+        return false;
+    }
+
+    boundary = content_type.substr(pos + 9);
+    return true;
+}
+
+inline bool parse_multipart_formdata(
+        const std::string& boundary, const std::string& body, MultipartFiles& files)
+{
+    static std::string dash = "--";
+    static std::string crlf = "\r\n";
+
+    static std::regex re_content_type(
+            "Content-Type: (.*?)", std::regex_constants::icase);
+
+    static std::regex re_content_disposition(
+            "Content-Disposition: form-data; name=\"(.*?)\"(?:; filename=\"(.*?)\")?",
+            std::regex_constants::icase);
+
+    auto dash_boundary = dash + boundary;
+
+    auto pos = body.find(dash_boundary);
+    if (pos != 0) {
+        return false;
+    }
+
+    pos += dash_boundary.size();
+
+    auto next_pos = body.find(crlf, pos);
+    if (next_pos == std::string::npos) {
+        return false;
+    }
+
+    pos = next_pos + crlf.size();
+
+    while (pos < body.size()) {
+        next_pos = body.find(crlf, pos);
+        if (next_pos == std::string::npos) {
+            return false;
+        }
+
+        std::string name;
+        MultipartFile file;
+
+        auto header = body.substr(pos, (next_pos - pos));
+
+        while (pos != next_pos) {
+            std::smatch m;
+            if (std::regex_match(header, m, re_content_type)) {
+                file.content_type = m[1];
+            } else if (std::regex_match(header, m, re_content_disposition)) {
+                name = m[1];
+                file.filename = m[2];
+            }
+
+            pos = next_pos + crlf.size();
+
+            next_pos = body.find(crlf, pos);
+            if (next_pos == std::string::npos) {
+                return false;
+            }
+
+            header = body.substr(pos, (next_pos - pos));
+        }
+
+        pos = next_pos + crlf.size();
+
+        next_pos = body.find(crlf + dash_boundary, pos);
+
+        if (next_pos == std::string::npos) {
+            return false;
+        }
+
+        file.offset = pos;
+        file.length = next_pos - pos;
+
+        pos = next_pos + crlf.size() + dash_boundary.size();
+
+        next_pos = body.find(crlf, pos);
+        if (next_pos == std::string::npos) {
+            return false;
+        }
+
+        files.emplace(name, file);
+
+        pos = next_pos + crlf.size();
+    }
+
+    return true;
+}
+
+inline std::string to_lower(const char* beg, const char* end)
+{
+    std::string out;
+    auto it = beg;
+    while (it != end) {
+        out += ::tolower(*it);
+        it++;
+    }
+    return out;
+}
+
+inline void make_range_header_core(std::string&) {}
+
+template<typename uint64_t>
+inline void make_range_header_core(std::string& field, uint64_t value)
+{
+    if (!field.empty()) {
+        field += ", ";
+    }
+    field += std::to_string(value) + "-";
+}
+
+template<typename uint64_t, typename... Args>
+inline void make_range_header_core(std::string& field, uint64_t value1, uint64_t value2, Args... args)
+{
+    if (!field.empty()) {
+        field += ", ";
+    }
+    field += std::to_string(value1) + "-" + std::to_string(value2);
+    make_range_header_core(field, args...);
+}
+
+#ifdef CPPHTTPLIB_ZLIB_SUPPORT
+inline bool can_compress(const std::string& content_type) {
+    return !content_type.find("text/") ||
+        content_type == "image/svg+xml" ||
+        content_type == "application/javascript" ||
+        content_type == "application/json" ||
+        content_type == "application/xml" ||
+        content_type == "application/xhtml+xml";
+}
+
+inline void compress(std::string& content)
+{
+    z_stream strm;
+    strm.zalloc = Z_NULL;
+    strm.zfree = Z_NULL;
+    strm.opaque = Z_NULL;
+
+    auto ret = deflateInit2(&strm, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 31, 8, Z_DEFAULT_STRATEGY);
+    if (ret != Z_OK) {
+        return;
+    }
+
+    strm.avail_in = content.size();
+    strm.next_in = (Bytef *)content.data();
+
+    std::string compressed;
+
+    const auto bufsiz = 16384;
+    char buff[bufsiz];
+    do {
+        strm.avail_out = bufsiz;
+        strm.next_out = (Bytef *)buff;
+        deflate(&strm, Z_FINISH);
+        compressed.append(buff, bufsiz - strm.avail_out);
+    } while (strm.avail_out == 0);
+
+    content.swap(compressed);
+
+    deflateEnd(&strm);
+}
+
+inline void decompress(std::string& content)
+{
+    z_stream strm;
+    strm.zalloc = Z_NULL;
+    strm.zfree = Z_NULL;
+    strm.opaque = Z_NULL;
+
+    // 15 is the value of wbits, which should be at the maximum possible value to ensure
+    // that any gzip stream can be decoded. The offset of 16 specifies that the stream
+    // to decompress will be formatted with a gzip wrapper.
+    auto ret = inflateInit2(&strm, 16 + 15);
+    if (ret != Z_OK) {
+        return;
+    }
+
+    strm.avail_in = content.size();
+    strm.next_in = (Bytef *)content.data();
+
+    std::string decompressed;
+
+    const auto bufsiz = 16384;
+    char buff[bufsiz];
+    do {
+        strm.avail_out = bufsiz;
+        strm.next_out = (Bytef *)buff;
+        inflate(&strm, Z_NO_FLUSH);
+        decompressed.append(buff, bufsiz - strm.avail_out);
+    } while (strm.avail_out == 0);
+
+    content.swap(decompressed);
+
+    inflateEnd(&strm);
+}
+#endif
+
+#ifdef _WIN32
+class WSInit {
+public:
+    WSInit() {
+        WSADATA wsaData;
+        WSAStartup(0x0002, &wsaData);
+    }
+
+    ~WSInit() {
+        WSACleanup();
+    }
+};
+
+static WSInit wsinit_;
+#endif
+
+} // namespace detail
+
+// Header utilities
+template<typename uint64_t, typename... Args>
+inline std::pair<std::string, std::string> make_range_header(uint64_t value, Args... args)
+{
+    std::string field;
+    detail::make_range_header_core(field, value, args...);
+    field.insert(0, "bytes=");
+    return std::make_pair("Range", field);
+}
+
+// Request implementation
+inline bool Request::has_header(const char* key) const
+{
+    return headers.find(key) != headers.end();
+}
+
+inline std::string Request::get_header_value(const char* key) const
+{
+    return detail::get_header_value(headers, key, "");
+}
+
+inline void Request::set_header(const char* key, const char* val)
+{
+    headers.emplace(key, val);
+}
+
+inline bool Request::has_param(const char* key) const
+{
+    return params.find(key) != params.end();
+}
+
+inline std::string Request::get_param_value(const char* key) const
+{
+    auto it = params.find(key);
+    if (it != params.end()) {
+        return it->second;
+    }
+    return std::string();
+}
+
+inline bool Request::has_file(const char* key) const
+{
+    return files.find(key) != files.end();
+}
+
+inline MultipartFile Request::get_file_value(const char* key) const
+{
+    auto it = files.find(key);
+    if (it != files.end()) {
+        return it->second;
+    }
+    return MultipartFile();
+}
+
+// Response implementation
+inline bool Response::has_header(const char* key) const
+{
+    return headers.find(key) != headers.end();
+}
+
+inline std::string Response::get_header_value(const char* key) const
+{
+    return detail::get_header_value(headers, key, "");
+}
+
+inline void Response::set_header(const char* key, const char* val)
+{
+    headers.emplace(key, val);
+}
+
+inline void Response::set_redirect(const char* url)
+{
+    set_header("Location", url);
+    status = 302;
+}
+
+inline void Response::set_content(const char* s, size_t n, const char* content_type)
+{
+    body.assign(s, n);
+    set_header("Content-Type", content_type);
+}
+
+inline void Response::set_content(const std::string& s, const char* content_type)
+{
+    body = s;
+    set_header("Content-Type", content_type);
+}
+
+// Rstream implementation
+template <typename ...Args>
+inline void Stream::write_format(const char* fmt, const Args& ...args)
+{
+    const auto bufsiz = 2048;
+    char buf[bufsiz];
+
+#if defined(_MSC_VER) && _MSC_VER < 1900
+    auto n = _snprintf_s(buf, bufsiz, bufsiz - 1, fmt, args...);
+#else
+    auto n = snprintf(buf, bufsiz - 1, fmt, args...);
+#endif
+    if (n > 0) {
+        if (n >= bufsiz - 1) {
+            std::vector<char> glowable_buf(bufsiz);
+
+            while (n >= static_cast<int>(glowable_buf.size() - 1)) {
+                glowable_buf.resize(glowable_buf.size() * 2);
+#if defined(_MSC_VER) && _MSC_VER < 1900
+                n = _snprintf_s(&glowable_buf[0], glowable_buf.size(), glowable_buf.size() - 1, fmt, args...);
+#else
+                n = snprintf(&glowable_buf[0], glowable_buf.size() - 1, fmt, args...);
+#endif
+            }
+            write(&glowable_buf[0], n);
+        } else {
+            write(buf, n);
+        }
+    }
+}
+
+// Socket stream implementation
+inline SocketStream::SocketStream(socket_t sock): sock_(sock)
+{
+}
+
+inline SocketStream::~SocketStream()
+{
+}
+
+inline int SocketStream::read(char* ptr, size_t size)
+{
+    return recv(sock_, ptr, size, 0);
+}
+
+inline int SocketStream::write(const char* ptr, size_t size)
+{
+    return send(sock_, ptr, size, 0);
+}
+
+inline int SocketStream::write(const char* ptr)
+{
+    return write(ptr, strlen(ptr));
+}
+
+inline std::string SocketStream::get_remote_addr() {
+    return detail::get_remote_addr(sock_);
+}
+
+// HTTP server implementation
+inline Server::Server()
+        : keep_alive_max_count_(5)
+        , is_running_(false)
+        , svr_sock_(INVALID_SOCKET)
+        , running_threads_(0)
+{
+#ifndef _WIN32
+    signal(SIGPIPE, SIG_IGN);
+#endif
+}
+
+inline Server::~Server()
+{
+}
+
+inline Server& Server::Get(const char* pattern, Handler handler)
+{
+    get_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
+    return *this;
+}
+
+inline Server& Server::Post(const char* pattern, Handler handler)
+{
+    post_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
+    return *this;
+}
+
+inline Server& Server::Put(const char* pattern, Handler handler)
+{
+    put_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
+    return *this;
+}
+
+inline Server& Server::Delete(const char* pattern, Handler handler)
+{
+    delete_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
+    return *this;
+}
+
+inline Server& Server::Options(const char* pattern, Handler handler)
+{
+    options_handlers_.push_back(std::make_pair(std::regex(pattern), handler));
+    return *this;
+}
+
+inline bool Server::set_base_dir(const char* path)
+{
+    if (detail::is_dir(path)) {
+        base_dir_ = path;
+        return true;
+    }
+    return false;
+}
+
+inline void Server::set_error_handler(Handler handler)
+{
+    error_handler_ = handler;
+}
+
+inline void Server::set_logger(Logger logger)
+{
+    logger_ = logger;
+}
+
+inline void Server::set_keep_alive_max_count(size_t count)
+{
+    keep_alive_max_count_ = count;
+}
+
+inline int Server::bind_to_any_port(const char* host, int socket_flags)
+{
+    return bind_internal(host, 0, socket_flags);
+}
+
+inline bool Server::listen_after_bind() {
+    return listen_internal();
+}
+
+inline bool Server::listen(const char* host, int port, int socket_flags)
+{
+    if (bind_internal(host, port, socket_flags) < 0)
+        return false;
+    return listen_internal();
+}
+
+inline bool Server::is_running() const
+{
+    return is_running_;
+}
+
+inline void Server::stop()
+{
+    if (is_running_) {
+        assert(svr_sock_ != INVALID_SOCKET);
+        detail::shutdown_socket(svr_sock_);
+        detail::close_socket(svr_sock_);
+        svr_sock_ = INVALID_SOCKET;
+    }
+}
+
+inline bool Server::parse_request_line(const char* s, Request& req)
+{
+    static std::regex re("(GET|HEAD|POST|PUT|DELETE|OPTIONS) (([^?]+)(?:\\?(.+?))?) (HTTP/1\\.[01])\r\n");
+
+    std::cmatch m;
+    if (std::regex_match(s, m, re)) {
+        req.version = std::string(m[4]);
+        req.method = std::string(m[1]);
+        req.target = std::string(m[2]);
+        req.path = detail::decode_url(m[3]);
+
+        // Parse query text
+        auto len = std::distance(m[4].first, m[4].second);
+        if (len > 0) {
+            detail::parse_query_text(m[4], req.params);
+        }
+
+        return true;
+    }
+
+    return false;
+}
+
+inline void Server::write_response(Stream& strm, bool last_connection, const Request& req, Response& res)
+{
+    assert(res.status != -1);
+
+    if (400 <= res.status && error_handler_) {
+        error_handler_(req, res);
+    }
+
+    // Response line
+    strm.write_format("HTTP/1.1 %d %s\r\n",
+                      res.status,
+                      detail::status_message(res.status));
+
+    // Headers
+    if (last_connection ||
+        req.version == "HTTP/1.0" ||
+        req.get_header_value("Connection") == "close") {
+        res.set_header("Connection", "close");
+    }
+
+    if (!res.body.empty()) {
+#ifdef CPPHTTPLIB_ZLIB_SUPPORT
+        // TODO: 'Accpet-Encoding' has gzip, not gzip;q=0
+        const auto& encodings = req.get_header_value("Accept-Encoding");
+        if (encodings.find("gzip") != std::string::npos &&
+            detail::can_compress(res.get_header_value("Content-Type"))) {
+            detail::compress(res.body);
+            res.set_header("Content-Encoding", "gzip");
+        }
+#endif
+
+        if (!res.has_header("Content-Type")) {
+            res.set_header("Content-Type", "text/plain");
+        }
+
+        auto length = std::to_string(res.body.size());
+        res.set_header("Content-Length", length.c_str());
+    }
+
+    detail::write_headers(strm, res);
+
+    // Body
+    if (!res.body.empty() && req.method != "HEAD") {
+        strm.write(res.body.c_str(), res.body.size());
+    }
+
+    // Log
+    if (logger_) {
+        logger_(req, res);
+    }
+}
+
+inline bool Server::handle_file_request(Request& req, Response& res)
+{
+    if (!base_dir_.empty() && detail::is_valid_path(req.path)) {
+        std::string path = base_dir_ + req.path;
+
+        if (!path.empty() && path.back() == '/') {
+            path += "index.html";
+        }
+
+        if (detail::is_file(path)) {
+            detail::read_file(path, res.body);
+            auto type = detail::find_content_type(path);
+            if (type) {
+                res.set_header("Content-Type", type);
+            }
+            res.status = 200;
+            return true;
+        }
+    }
+
+    return false;
+}
+
+inline socket_t Server::create_server_socket(const char* host, int port, int socket_flags) const
+{
+    return detail::create_socket(host, port,
+                                 [](socket_t sock, struct addrinfo& ai) -> bool {
+                                     if (::bind(sock, ai.ai_addr, ai.ai_addrlen)) {
+                                         return false;
+                                     }
+                                     if (::listen(sock, 5)) { // Listen through 5 channels
+                                         return false;
+                                     }
+                                     return true;
+                                 }, socket_flags);
+}
+
+inline int Server::bind_internal(const char* host, int port, int socket_flags)
+{
+    if (!is_valid()) {
+        return -1;
+    }
+
+    svr_sock_ = create_server_socket(host, port, socket_flags);
+    if (svr_sock_ == INVALID_SOCKET) {
+        return -1;
+    }
+
+    if (port == 0) {
+        struct sockaddr_storage address;
+        socklen_t len = sizeof(address);
+        if (getsockname(svr_sock_, reinterpret_cast<struct sockaddr *>(&address), &len) == -1) {
+            return -1;
+        }
+        if (address.ss_family == AF_INET) {
+            return ntohs(reinterpret_cast<struct sockaddr_in*>(&address)->sin_port);
+        } else if (address.ss_family == AF_INET6) {
+            return ntohs(reinterpret_cast<struct sockaddr_in6*>(&address)->sin6_port);
+        } else {
+            return -1;
+        }
+    } else {
+        return port;
+    }
+}
+
+inline bool Server::listen_internal()
+{
+    auto ret = true;
+
+    is_running_ = true;
+
+    for (;;) {
+        auto val = detail::select_read(svr_sock_, 0, 100000);
+
+        if (val == 0) { // Timeout
+            if (svr_sock_ == INVALID_SOCKET) {
+                // The server socket was closed by 'stop' method.
+                break;
+            }
+            continue;
+        }
+
+        socket_t sock = accept(svr_sock_, NULL, NULL);
+
+        if (sock == INVALID_SOCKET) {
+            if (svr_sock_ != INVALID_SOCKET) {
+                detail::close_socket(svr_sock_);
+                ret = false;
+            } else {
+                ; // The server socket was closed by user.
+            }
+            break;
+        }
+
+        // TODO: Use thread pool...
+        std::thread([=]() {
+            {
+                std::lock_guard<std::mutex> guard(running_threads_mutex_);
+                running_threads_++;
+            }
+
+            read_and_close_socket(sock);
+
+            {
+                std::lock_guard<std::mutex> guard(running_threads_mutex_);
+                running_threads_--;
+            }
+        }).detach();
+    }
+
+    // TODO: Use thread pool...
+    for (;;) {
+        std::this_thread::sleep_for(std::chrono::milliseconds(10));
+        std::lock_guard<std::mutex> guard(running_threads_mutex_);
+        if (!running_threads_) {
+            break;
+        }
+    }
+
+    is_running_ = false;
+
+    return ret;
+}
+
+inline bool Server::routing(Request& req, Response& res)
+{
+    if (req.method == "GET" && handle_file_request(req, res)) {
+        return true;
+    }
+
+    if (req.method == "GET" || req.method == "HEAD") {
+        return dispatch_request(req, res, get_handlers_);
+    } else if (req.method == "POST") {
+        return dispatch_request(req, res, post_handlers_);
+    } else if (req.method == "PUT") {
+        return dispatch_request(req, res, put_handlers_);
+    } else if (req.method == "DELETE") {
+        return dispatch_request(req, res, delete_handlers_);
+    } else if (req.method == "OPTIONS") {
+        return dispatch_request(req, res, options_handlers_);
+    }
+    return false;
+}
+
+inline bool Server::dispatch_request(Request& req, Response& res, Handlers& handlers)
+{
+    for (const auto& x: handlers) {
+        const auto& pattern = x.first;
+        const auto& handler = x.second;
+
+        if (std::regex_match(req.path, req.matches, pattern)) {
+            handler(req, res);
+            return true;
+        }
+    }
+    return false;
+}
+
+inline bool Server::process_request(Stream& strm, bool last_connection, bool& connection_close)
+{
+    const auto bufsiz = 2048;
+    char buf[bufsiz];
+
+    detail::stream_line_reader reader(strm, buf, bufsiz);
+
+    // Connection has been closed on client
+    if (!reader.getline()) {
+        return false;
+    }
+
+    Request req;
+    Response res;
+
+    res.version = "HTTP/1.1";
+
+    // Request line and headers
+    if (!parse_request_line(reader.ptr(), req) || !detail::read_headers(strm, req.headers)) {
+        res.status = 400;
+        write_response(strm, last_connection, req, res);
+        return true;
+    }
+
+    auto ret = true;
+    if (req.get_header_value("Connection") == "close") {
+        // ret = false;
+        connection_close = true;
+    }
+
+    req.set_header("REMOTE_ADDR", strm.get_remote_addr().c_str());
+
+    // Body
+    if (req.method == "POST" || req.method == "PUT") {
+        if (!detail::read_content(strm, req)) {
+            res.status = 400;
+            write_response(strm, last_connection, req, res);
+            return ret;
+        }
+
+        const auto& content_type = req.get_header_value("Content-Type");
+
+        if (req.get_header_value("Content-Encoding") == "gzip") {
+#ifdef CPPHTTPLIB_ZLIB_SUPPORT
+            detail::decompress(req.body);
+#else
+            res.status = 415;
+            write_response(strm, last_connection, req, res);
+            return ret;
+#endif
+        }
+
+        if (!content_type.find("application/x-www-form-urlencoded")) {
+            detail::parse_query_text(req.body, req.params);
+        } else if(!content_type.find("multipart/form-data")) {
+            std::string boundary;
+            if (!detail::parse_multipart_boundary(content_type, boundary) ||
+                !detail::parse_multipart_formdata(boundary, req.body, req.files)) {
+                res.status = 400;
+                write_response(strm, last_connection, req, res);
+                return ret;
+            }
+        }
+    }
+
+    if (routing(req, res)) {
+        if (res.status == -1) {
+            res.status = 200;
+        }
+    } else {
+        res.status = 404;
+    }
+
+    write_response(strm, last_connection, req, res);
+    return ret;
+}
+
+inline bool Server::is_valid() const
+{
+    return true;
+}
+
+inline bool Server::read_and_close_socket(socket_t sock)
+{
+    return detail::read_and_close_socket(
+            sock,
+            keep_alive_max_count_,
+            [this](Stream& strm, bool last_connection, bool& connection_close) {
+                return process_request(strm, last_connection, connection_close);
+            });
+}
+
+// HTTP client implementation
+inline Client::Client(
+        const char* host, int port, size_t timeout_sec)
+        : host_(host)
+        , port_(port)
+        , timeout_sec_(timeout_sec)
+        , host_and_port_(host_ + ":" + std::to_string(port_))
+{
+}
+
+inline Client::~Client()
+{
+}
+
+inline bool Client::is_valid() const
+{
+    return true;
+}
+
+inline socket_t Client::create_client_socket() const
+{
+    return detail::create_socket(host_.c_str(), port_,
+                                 [=](socket_t sock, struct addrinfo& ai) -> bool {
+                                     detail::set_nonblocking(sock, true);
+
+                                     auto ret = connect(sock, ai.ai_addr, ai.ai_addrlen);
+                                     if (ret < 0) {
+                                         if (detail::is_connection_error() ||
+                                             !detail::wait_until_socket_is_ready(sock, timeout_sec_, 0)) {
+                                             detail::close_socket(sock);
+                                             return false;
+                                         }
+                                     }
+
+                                     detail::set_nonblocking(sock, false);
+                                     return true;
+                                 });
+}
+
+inline bool Client::read_response_line(Stream& strm, Response& res)
+{
+    const auto bufsiz = 2048;
+    char buf[bufsiz];
+
+    detail::stream_line_reader reader(strm, buf, bufsiz);
+
+    if (!reader.getline()) {
+        return false;
+    }
+
+    const static std::regex re("(HTTP/1\\.[01]) (\\d+?) .+\r\n");
+
+    std::cmatch m;
+    if (std::regex_match(reader.ptr(), m, re)) {
+        res.version = std::string(m[1]);
+        res.status = std::stoi(std::string(m[2]));
+    }
+
+    return true;
+}
+
+inline bool Client::send(Request& req, Response& res)
+{
+    if (req.path.empty()) {
+        return false;
+    }
+
+    auto sock = create_client_socket();
+    if (sock == INVALID_SOCKET) {
+        return false;
+    }
+
+    return read_and_close_socket(sock, req, res);
+}
+
+inline void Client::write_request(Stream& strm, Request& req)
+{
+    auto path = detail::encode_url(req.path);
+
+    // Request line
+    strm.write_format("%s %s HTTP/1.1\r\n",
+                      req.method.c_str(),
+                      path.c_str());
+
+    // Headers
+    req.set_header("Host", host_and_port_.c_str());
+
+    if (!req.has_header("Accept")) {
+        req.set_header("Accept", "*/*");
+    }
+
+    if (!req.has_header("User-Agent")) {
+        req.set_header("User-Agent", "cpp-httplib/0.2");
+    }
+
+    // TODO: Support KeepAlive connection
+    // if (!req.has_header("Connection")) {
+    req.set_header("Connection", "close");
+    // }
+
+    if (!req.body.empty()) {
+        if (!req.has_header("Content-Type")) {
+            req.set_header("Content-Type", "text/plain");
+        }
+
+        auto length = std::to_string(req.body.size());
+        req.set_header("Content-Length", length.c_str());
+    }
+
+    detail::write_headers(strm, req);
+
+    // Body
+    if (!req.body.empty()) {
+        if (req.get_header_value("Content-Type") == "application/x-www-form-urlencoded") {
+            auto str = detail::encode_url(req.body);
+            strm.write(str.c_str(), str.size());
+        } else {
+            strm.write(req.body.c_str(), req.body.size());
+        }
+    }
+}
+
+inline bool Client::process_request(Stream& strm, Request& req, Response& res, bool& connection_close)
+{
+    // Send request
+    write_request(strm, req);
+
+    // Receive response and headers
+    if (!read_response_line(strm, res) || !detail::read_headers(strm, res.headers)) {
+        return false;
+    }
+
+    if (res.get_header_value("Connection") == "close" || res.version == "HTTP/1.0") {
+        connection_close = true;
+    }
+
+    // Body
+    if (req.method != "HEAD") {
+        if (!detail::read_content(strm, res, req.progress)) {
+            return false;
+        }
+
+        if (res.get_header_value("Content-Encoding") == "gzip") {
+#ifdef CPPHTTPLIB_ZLIB_SUPPORT
+            detail::decompress(res.body);
+#else
+            return false;
+#endif
+        }
+    }
+
+    return true;
+}
+
+inline bool Client::read_and_close_socket(socket_t sock, Request& req, Response& res)
+{
+    return detail::read_and_close_socket(
+            sock,
+            0,
+            [&](Stream& strm, bool /*last_connection*/, bool& connection_close) {
+                return process_request(strm, req, res, connection_close);
+            });
+}
+
+inline std::shared_ptr<Response> Client::Get(const char* path, Progress progress)
+{
+    return Get(path, Headers(), progress);
+}
+
+inline std::shared_ptr<Response> Client::Get(const char* path, const Headers& headers, Progress progress)
+{
+    Request req;
+    req.method = "GET";
+    req.path = path;
+    req.headers = headers;
+    req.progress = progress;
+
+    auto res = std::make_shared<Response>();
+
+    return send(req, *res) ? res : nullptr;
+}
+
+inline std::shared_ptr<Response> Client::Head(const char* path)
+{
+    return Head(path, Headers());
+}
+
+inline std::shared_ptr<Response> Client::Head(const char* path, const Headers& headers)
+{
+    Request req;
+    req.method = "HEAD";
+    req.headers = headers;
+    req.path = path;
+
+    auto res = std::make_shared<Response>();
+
+    return send(req, *res) ? res : nullptr;
+}
+
+inline std::shared_ptr<Response> Client::Post(
+        const char* path, const std::string& body, const char* content_type)
+{
+    return Post(path, Headers(), body, content_type);
+}
+
+inline std::shared_ptr<Response> Client::Post(
+        const char* path, const Headers& headers, const std::string& body, const char* content_type)
+{
+    Request req;
+    req.method = "POST";
+    req.headers = headers;
+    req.path = path;
+
+    req.headers.emplace("Content-Type", content_type);
+    req.body = body;
+
+    auto res = std::make_shared<Response>();
+
+    return send(req, *res) ? res : nullptr;
+}
+
+inline std::shared_ptr<Response> Client::Post(const char* path, const Params& params)
+{
+    return Post(path, Headers(), params);
+}
+
+inline std::shared_ptr<Response> Client::Post(const char* path, const Headers& headers, const Params& params)
+{
+    std::string query;
+    for (auto it = params.begin(); it != params.end(); ++it) {
+        if (it != params.begin()) {
+            query += "&";
+        }
+        query += it->first;
+        query += "=";
+        query += it->second;
+    }
+
+    return Post(path, headers, query, "application/x-www-form-urlencoded");
+}
+
+inline std::shared_ptr<Response> Client::Put(
+        const char* path, const std::string& body, const char* content_type)
+{
+    return Put(path, Headers(), body, content_type);
+}
+
+inline std::shared_ptr<Response> Client::Put(
+        const char* path, const Headers& headers, const std::string& body, const char* content_type)
+{
+    Request req;
+    req.method = "PUT";
+    req.headers = headers;
+    req.path = path;
+
+    req.headers.emplace("Content-Type", content_type);
+    req.body = body;
+
+    auto res = std::make_shared<Response>();
+
+    return send(req, *res) ? res : nullptr;
+}
+
+inline std::shared_ptr<Response> Client::Delete(const char* path)
+{
+    return Delete(path, Headers());
+}
+
+inline std::shared_ptr<Response> Client::Delete(const char* path, const Headers& headers)
+{
+    Request req;
+    req.method = "DELETE";
+    req.path = path;
+    req.headers = headers;
+
+    auto res = std::make_shared<Response>();
+
+    return send(req, *res) ? res : nullptr;
+}
+
+inline std::shared_ptr<Response> Client::Options(const char* path)
+{
+    return Options(path, Headers());
+}
+
+inline std::shared_ptr<Response> Client::Options(const char* path, const Headers& headers)
+{
+    Request req;
+    req.method = "OPTIONS";
+    req.path = path;
+    req.headers = headers;
+
+    auto res = std::make_shared<Response>();
+
+    return send(req, *res) ? res : nullptr;
+}
+
+/*
+ * SSL Implementation
+ */
+#ifdef CPPHTTPLIB_OPENSSL_SUPPORT
+namespace detail {
+
+template <typename U, typename V, typename T>
+inline bool read_and_close_socket_ssl(
+        socket_t sock, size_t keep_alive_max_count,
+        // TODO: OpenSSL 1.0.2 occasionally crashes...
+        // The upcoming 1.1.0 is going to be thread safe.
+        SSL_CTX* ctx, std::mutex& ctx_mutex,
+        U SSL_connect_or_accept, V setup,
+        T callback)
+{
+    SSL* ssl = nullptr;
+    {
+        std::lock_guard<std::mutex> guard(ctx_mutex);
+
+        ssl = SSL_new(ctx);
+        if (!ssl) {
+            return false;
+        }
+    }
+
+    auto bio = BIO_new_socket(sock, BIO_NOCLOSE);
+    SSL_set_bio(ssl, bio, bio);
+
+    setup(ssl);
+
+    SSL_connect_or_accept(ssl);
+
+    bool ret = false;
+
+    if (keep_alive_max_count > 0) {
+        auto count = keep_alive_max_count;
+        while (count > 0 &&
+               detail::select_read(sock,
+                                   CPPHTTPLIB_KEEPALIVE_TIMEOUT_SECOND,
+                                   CPPHTTPLIB_KEEPALIVE_TIMEOUT_USECOND) > 0) {
+            SSLSocketStream strm(sock, ssl);
+            auto last_connection = count == 1;
+            auto connection_close = false;
+
+            ret = callback(strm, last_connection, connection_close);
+            if (!ret || connection_close) {
+                break;
+            }
+
+            count--;
+        }
+    } else {
+        SSLSocketStream strm(sock, ssl);
+        auto dummy_connection_close = false;
+        ret = callback(strm, true, dummy_connection_close);
+    }
+
+    SSL_shutdown(ssl);
+
+    {
+        std::lock_guard<std::mutex> guard(ctx_mutex);
+        SSL_free(ssl);
+    }
+
+    close_socket(sock);
+
+    return ret;
+}
+
+class SSLInit {
+public:
+    SSLInit() {
+        SSL_load_error_strings();
+        SSL_library_init();
+    }
+};
+
+static SSLInit sslinit_;
+
+} // namespace detail
+
+// SSL socket stream implementation
+inline SSLSocketStream::SSLSocketStream(socket_t sock, SSL* ssl)
+        : sock_(sock), ssl_(ssl)
+{
+}
+
+inline SSLSocketStream::~SSLSocketStream()
+{
+}
+
+inline int SSLSocketStream::read(char* ptr, size_t size)
+{
+    return SSL_read(ssl_, ptr, size);
+}
+
+inline int SSLSocketStream::write(const char* ptr, size_t size)
+{
+    return SSL_write(ssl_, ptr, size);
+}
+
+inline int SSLSocketStream::write(const char* ptr)
+{
+    return write(ptr, strlen(ptr));
+}
+
+inline std::string SSLSocketStream::get_remote_addr() {
+    return detail::get_remote_addr(sock_);
+}
+
+// SSL HTTP server implementation
+inline SSLServer::SSLServer(const char* cert_path, const char* private_key_path)
+{
+    ctx_ = SSL_CTX_new(SSLv23_server_method());
+
+    if (ctx_) {
+        SSL_CTX_set_options(ctx_,
+                            SSL_OP_ALL | SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
+                            SSL_OP_NO_COMPRESSION |
+                            SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION);
+
+        // auto ecdh = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
+        // SSL_CTX_set_tmp_ecdh(ctx_, ecdh);
+        // EC_KEY_free(ecdh);
+
+        if (SSL_CTX_use_certificate_file(ctx_, cert_path, SSL_FILETYPE_PEM) != 1 ||
+            SSL_CTX_use_PrivateKey_file(ctx_, private_key_path, SSL_FILETYPE_PEM) != 1) {
+            SSL_CTX_free(ctx_);
+            ctx_ = nullptr;
+        }
+    }
+}
+
+inline SSLServer::~SSLServer()
+{
+    if (ctx_) {
+        SSL_CTX_free(ctx_);
+    }
+}
+
+inline bool SSLServer::is_valid() const
+{
+    return ctx_;
+}
+
+inline bool SSLServer::read_and_close_socket(socket_t sock)
+{
+    return detail::read_and_close_socket_ssl(
+            sock,
+            keep_alive_max_count_,
+            ctx_, ctx_mutex_,
+            SSL_accept,
+            [](SSL* /*ssl*/) {},
+            [this](Stream& strm, bool last_connection, bool& connection_close) {
+                return process_request(strm, last_connection, connection_close);
+            });
+}
+
+// SSL HTTP client implementation
+inline SSLClient::SSLClient(const char* host, int port, size_t timeout_sec)
+        : Client(host, port, timeout_sec)
+{
+    ctx_ = SSL_CTX_new(SSLv23_client_method());
+}
+
+inline SSLClient::~SSLClient()
+{
+    if (ctx_) {
+        SSL_CTX_free(ctx_);
+    }
+}
+
+inline bool SSLClient::is_valid() const
+{
+    return ctx_;
+}
+
+inline bool SSLClient::read_and_close_socket(socket_t sock, Request& req, Response& res)
+{
+    return is_valid() && detail::read_and_close_socket_ssl(
+            sock, 0,
+            ctx_, ctx_mutex_,
+            SSL_connect,
+            [&](SSL* ssl) {
+                SSL_set_tlsext_host_name(ssl, host_.c_str());
+            },
+            [&](Stream& strm, bool /*last_connection*/, bool& connection_close) {
+                return process_request(strm, req, res, connection_close);
+            });
+}
+#endif
+
+} // namespace httplib
+
+#endif
+
+// vim: et ts=4 sw=4 cin cino={1s ff=unix