Add HTTP support and update checking

code/cpp-httplib-0.19.0/benchmark/Makefile

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+CXXFLAGS = -std=c++11 -O2 -I..
+
+CPPHTTPLIB_FLAGS = -DCPPHTTPLIB_THREAD_POOL_COUNT=16
+
+BENCH = bombardier -c 10 -d 5s localhost:8080
+MONITOR = ali http://localhost:8080
+
+# cpp-httplib
+bench: server
+	@echo "--------------------\n cpp-httplib latest\n--------------------\n"
+	@./server & export PID=$$!; $(BENCH); kill $${PID}
+	@echo ""
+
+monitor: server
+	@./server & export PID=$$!; $(MONITOR); kill $${PID}
+
+run : server
+	@./server
+
+server : cpp-httplib/main.cpp ../httplib.h
+	g++ -o $@ $(CXXFLAGS) $(CPPHTTPLIB_FLAGS) cpp-httplib/main.cpp
+
+# cpp-httplib
+bench-base: server-base
+	@echo "---------------------\n cpp-httplib v0.18.0\n---------------------\n"
+	@./server-base & export PID=$$!; $(BENCH); kill $${PID}
+	@echo ""
+
+monitor-base: server-base
+	@./server-base & export PID=$$!; $(MONITOR); kill $${PID}
+
+run-base : server-base
+	@./server-base
+
+server-base : cpp-httplib-base/main.cpp cpp-httplib-base/httplib.h
+	g++ -o $@ $(CXXFLAGS) $(CPPHTTPLIB_FLAGS) cpp-httplib-base/main.cpp
+
+# crow
+bench-crow: server-crow
+	@echo "-------------\n Crow v1.2.0\n-------------\n"
+	@./server-crow & export PID=$$!; $(BENCH); kill $${PID}
+	@echo ""
+
+monitor-crow: server-crow
+	@./server-crow & export PID=$$!; $(MONITOR); kill $${PID}
+
+run-crow : server-crow
+	@./server-crow
+
+server-crow : crow/main.cpp
+	g++ -o $@ $(CXXFLAGS) crow/main.cpp
+
+# misc
+build: server server-base server-crow
+
+bench-all: bench-crow bench bench-base
+
+issue:
+	bombardier -c 10 -d 30s localhost:8080
+
+clean:
+	rm -rf server*

code/cpp-httplib-0.19.0/benchmark/cpp-httplib-base/main.cpp

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+#include "./httplib.h"
+using namespace httplib;
+
+int main() {
+  Server svr;
+
+  svr.Get("/", [](const Request &, Response &res) {
+    res.set_content("Hello World!", "text/plain");
+  });
+
+  svr.listen("0.0.0.0", 8080);
+}

code/cpp-httplib-0.19.0/benchmark/cpp-httplib/main.cpp

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+#include "httplib.h"
+using namespace httplib;
+
+int main() {
+  Server svr;
+
+  svr.Get("/", [](const Request &, Response &res) {
+    res.set_content("Hello World!", "text/plain");
+  });
+
+  svr.listen("0.0.0.0", 8080);
+}

code/cpp-httplib-0.19.0/benchmark/crow/main.cpp

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+#include "crow_all.h"
+
+class CustomLogger : public crow::ILogHandler {
+public:
+  void log(std::string, crow::LogLevel) {}
+};
+
+int main() {
+  CustomLogger logger;
+  crow::logger::setHandler(&logger);
+
+  crow::SimpleApp app;
+
+  CROW_ROUTE(app, "/")([]() { return "Hello world!"; });
+
+  app.port(8080).multithreaded().run();
+}

code/cpp-httplib-0.19.0/benchmark/download.sh

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+rm -f httplib.h
+wget https://raw.githubusercontent.com/yhirose/cpp-httplib/v$1/httplib.h