Joshua Moerman
12 years ago
4 changed files with 248 additions and 216 deletions
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#include <string> |
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#include <memory> |
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#include <functional> |
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#include <stdexcept> |
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#include <syslog.h> |
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#include <getopt.h> |
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#include <signal.h> |
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#include <string.h> |
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#include <lib/libwebsockets.h> |
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namespace websockets { |
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struct Log { |
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Log(std::string const & name, int syslog_options, int debug_level){ |
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setlogmask(LOG_UPTO (LOG_DEBUG)); |
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openlog(name.c_str(), syslog_options, LOG_DAEMON); |
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lws_set_log_level(debug_level, lwsl_emit_syslog); |
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} |
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#define log_function(nice_name, lwsl_name)\ |
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template <typename... T>\ |
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void nice_name(std::string const & format, T... args){\ |
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lwsl_name(format.c_str(), std::forward(args)...);\ |
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} |
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log_function(notice, lwsl_notice) |
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log_function(error, lwsl_err) |
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log_function(warning, lwsl_warn) |
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log_function(debug, lwsl_debug) |
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#undef log_function |
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~Log(){ |
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closelog(); |
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} |
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}; |
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struct Context { |
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std::unique_ptr<libwebsocket_context, decltype(libwebsocket_context_destroy)*> context; |
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Context(lws_context_creation_info& info) |
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: context(libwebsocket_create_context(&info), &libwebsocket_context_destroy) |
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{ |
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if(context == nullptr){ |
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lwsl_err("libwebsocket init failed\n"); |
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throw std::runtime_error("libwebsocket init failed"); |
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} |
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} |
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libwebsocket_context const * get_raw() const { |
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return context.get(); |
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} |
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libwebsocket_context * get_raw() { |
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return context.get(); |
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} |
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}; |
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template <typename T> |
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struct Protocol { |
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int callback(libwebsocket_context *context, libwebsocket *wsi, libwebsocket_callback_reasons reason, void *user, void *in, size_t len){ |
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return call(*context, *wsi, reason, *static_cast<T*>(user), in, len); |
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} |
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virtual int call(libwebsocket_context& context, libwebsocket& wsi, libwebsocket_callback_reasons reason, T& user, void *in, size_t len){ |
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return 0; |
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}; |
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}; |
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template <typename T> |
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struct TestProtocol : public Protocol<T> { |
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std::function<int(T&)> establish_func; |
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std::function<int(T&)> close_func; |
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std::function<std::string(T&)> write_func; |
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std::function<int(T&, std::string)> receive_func; |
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TestProtocol(decltype(establish_func) establish_func, decltype(close_func) close_func, decltype(write_func) write_func, decltype(receive_func) receive_func) |
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: establish_func(establish_func) |
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, close_func(close_func) |
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, write_func(write_func) |
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, receive_func(receive_func) |
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{} |
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virtual int call(libwebsocket_context& context, libwebsocket& wsi, libwebsocket_callback_reasons reason, T& user, void *in, size_t len){ |
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int n = 0; |
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std::string string_to_send; |
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switch (reason) { |
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case LWS_CALLBACK_ESTABLISHED: |
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establish_func(user); |
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break; |
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case LWS_CALLBACK_CLOSED: |
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close_func(user); |
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break; |
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case LWS_CALLBACK_SERVER_WRITEABLE: |
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string_to_send = write_func(user); |
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n = libwebsocket_write(&wsi, (unsigned char *)string_to_send.c_str(), string_to_send.size(), LWS_WRITE_TEXT); |
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if (n < 0) { |
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lwsl_err("ERROR %d writing to socket, hanging up\n", n); |
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return 1; |
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} |
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if (n < string_to_send.size()) { |
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lwsl_err("Partial write\n"); |
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return -1; |
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} |
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break; |
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case LWS_CALLBACK_RECEIVE: |
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receive_func(user, std::string((char*)in, len)); |
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libwebsocket_callback_on_writable(&context, &wsi); |
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break; |
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default: |
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break; |
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} |
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return 0; |
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} |
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}; |
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#define WSprotocol_callback(protocol)\ |
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[](libwebsocket_context *context, libwebsocket *wsi, libwebsocket_callback_reasons reason, void *user, void *in, size_t len)\ |
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{return protocol.callback(context, wsi, reason, user, in, len);} |
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#define WSstandard_protocol(name, protocol, user)\ |
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{ name, WSprotocol_callback(protocol), sizeof(user) } |
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static struct option options[] = { |
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{ "help", no_argument, NULL, 'h' }, |
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{ "debug", required_argument, NULL, 'd' }, |
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{ "port", required_argument, NULL, 'p' }, |
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{ "ssl", no_argument, NULL, 's' }, |
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{ "interface", required_argument, NULL, 'i' }, |
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{ NULL, 0, 0, 0 } |
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}; |
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inline int default_main(int argc, char **argv, libwebsocket_protocols* protocols){ |
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int n = 0; |
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int port = 7681; |
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int use_ssl = 0; |
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int opts = 0; |
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char interface_name[128] = ""; |
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const char *interface = NULL; |
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int syslog_options = LOG_PID | LOG_PERROR; |
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int listen_port; |
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struct lws_context_creation_info info; |
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int debug_level = 7; |
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memset(&info, 0, sizeof info); |
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while (n >= 0) { |
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n = getopt_long(argc, argv, "i:hsp:d:D" |
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, options, NULL); |
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if (n < 0) |
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continue; |
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switch (n) { |
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case 'd': |
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debug_level = atoi(optarg); |
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break; |
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case 's': |
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use_ssl = 1; /* 1 = take care about cert verification, 2 = allow anything */ |
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break; |
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case 'p': |
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port = atoi(optarg); |
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break; |
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case 'i': |
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strncpy(interface_name, optarg, sizeof interface_name); |
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interface_name[(sizeof interface_name) - 1] = '\0'; |
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interface = interface_name; |
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break; |
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case '?': |
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case 'h': |
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fprintf(stderr, "Usage: libwebsockets-test-echo " |
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"[--ssl] " |
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"[--port=<p>] " |
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"[-d <log bitfield>]\n"); |
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exit(1); |
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} |
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} |
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websockets::Log log("lwsts", syslog_options, debug_level); |
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log.notice("libwebsockets echo test - " |
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"(C) Copyright 2010-2013 Andy Green <andy@warmcat.com> - " |
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"licensed under LGPL2.1\n"); |
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log.notice("Running in server mode\n"); |
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listen_port = port; |
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info.port = listen_port; |
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info.iface = interface; |
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info.protocols = protocols; |
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if (use_ssl) { |
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info.ssl_cert_filepath = "libwebsockets-test-server.pem"; |
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info.ssl_private_key_filepath = "libwebsockets-test-server.key.pem"; |
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} |
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info.gid = -1; |
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info.uid = -1; |
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info.options = opts; |
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static bool force_exit = false; |
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signal(SIGINT, [](int){ force_exit = true; }); |
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websockets::Context context(info); |
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while (!force_exit) { |
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auto ret = libwebsocket_service(context.get_raw(), 10); |
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if(ret < 0) break; |
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} |
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log.notice("libwebsockets-test-echo exited cleanly\n"); |
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return 0; |
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} |
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} // namespace websockets
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