Add a client example program and move examples to the examples/ folder

examples/simple_client.c

@@ -0,0 +1,60 @@
+#include "../chttp.h"
+
+#ifdef _WIN32
+#define POLL WSAPoll
+#else
+#define POLL poll
+#endif
+
+int main(void)
+{
+    HTTP_Client client;
+    if (http_client_init(&client) < 0)
+        return -1;
+
+    HTTP_RequestBuilder builder;
+    if (http_client_get_builder(&client, NULL, &builder) < 0)
+        return -1;
+
+    http_request_builder_url(builder,
+        HTTP_METHOD_GET,
+        HTTP_STR("http://coz.is")
+    );
+
+    http_request_builder_header(builder,
+        HTTP_STR("Greeting: Hello from the cHTTP example!"));
+
+    if (http_request_builder_send(builder) < 0)
+        return -1;
+
+    for (;;) {
+
+        void *ptrs[HTTP_CLIENT_CAPACITY+1];
+        struct pollfd polled[HTTP_CLIENT_CAPACITY+1];
+
+        EventRegister reg = {
+            .ptrs=ptrs,
+            .polled=polled,
+            .num_polled=0,
+            .max_polled=HTTP_CLIENT_CAPACITY+1,
+        };
+
+        if (http_client_register_events(&client, &reg) < 0)
+            return -1;
+
+        if (reg.num_polled > 0)
+            POLL(reg.polled, reg.num_polled, -1);
+
+        if (http_client_process_events(&client, &reg) < 0)
+            return -1;
+
+        HTTP_Response *response;
+        while (http_client_next_response(&client, &response)) {
+            // TODO
+            http_free_response(response);
+        }
+    }
+
+    http_client_free(&client);
+    return 0;
+}