1.url structure
2.The difference between http and http-restful lies in the assignment of mg_tls_opts
2.1 Distinguishing between http and https
a) port address
static const char *s_http_addr = “http://0.0.0.0:8000”; // HTTP port
static const char *s_https_addr = “https://0.0.0.0:8443”; // HTTPS port
b) Assign value to mg_tls_opts when using https
struct mg_tls_opts opts = { #ifdef TLS_TWOWAY .ca = mg_str(s_tls_ca), #endif .cert = mg_str(s_tls_cert), .key = mg_str(s_tls_key)}; mg_tls_init(c, & amp;opts); }
3 important variables:
static const char* s_tls_ca;
static const char* s_tls_cert;
static const char* s_tls_key;
#ifdef TLS_TWOWAY static const char* s_tls_ca = "-----BEGIN CERTIFICATE-----\\ " "MIIBqjCCAU + gAwIBAgIUESoOPGqMhf9uarzblVFwzrQweMcwCgYIKoZIzj0EAwIw\\ " "RDELMAkGA1UEBhMCSUUxDzANBgNVBAcMBkR1YmxpbjEQMA4GA1UECgwHQ2VzYW50\\ " "YTESMBAGA1UEAwwJVGVzdCBSb290MCAXDTIwMDUwOTIxNTE0NFoYDzIwNTAwNTA5\\ " "MjE1MTQ0WjBEMQswCQYDVQQGEwJJRTEPMA0GA1UEBwwGRHVibGluMRAwDgYDVQQK\\ " "DAdDZXNhbnRhMRIwEAYDVQQDDAlUZXN0IFJvb3QwWTATBgcqhkjOPQIBBggqhkjO\\ " "PQMBBwNCAAQsq9ECZiSW1xI + CVBP8VDuUehVA166sR2YsnJ5J6gbMQ1dUCH/QvLa\\ " "dBdeU7JlQcH8hN5KEbmM9BnZxMor6ussox0wGzAMBgNVHRMEBTADAQH/MAsGA1Ud\\ " "DwQEAwIBrjAKBggqhkjOPQQDAgNJADBGAiEAnHFsAIwGQQyRL81B04dH6d86Iq0l\\ " "fL8OKzndegxOaB0CIQCPwSIwEGFdURDqCC0CY2dnMrUGY5ZXu3hHCojZGS7zvg==\\ " "-----END CERTIFICATE-----\\ "; #endif static const char* s_tls_cert = "-----BEGIN CERTIFICATE-----\\ " "MIIBhzCCASygAwIBAgIUbnMoVd8TtWH1T09dANkK2LU6IUswCgYIKoZIzj0EAwIw\\ " "RDELMAkGA1UEBhMCSUUxDzANBgNVBAcMBkR1YmxpbjEQMA4GA1UECgwHQ2VzYW50\\ " "YTESMBAGA1UEAwwJVGVzdCBSb290MB4XDTIwMDUwOTIxNTE0OVoXDTMwMDUwOTIx\\ " "NTE0OVowETEPMA0GA1UEAwwGc2VydmVyMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcD\\ " "QgAEkuBGnInDN6l06zVVQ1VcrOvH5FDu9MC6FwJc2e201P8hEpq0Q/SJS2nkbSuW\\ " "H/wBTTBaeXN2uhlBzMUWK790KKMvMC0wCQYDVR0TBAIwADALBgNVHQ8EBAMCA6gw\\ " "EwYDVR0lBAwwCgYIKwYBBQUHAwEwCgYIKoZIzj0EAwIDSQAwRgIhAPo6xx7LjCdZ\\ " "QY133XvLjAgVFrlucOZHONFVQuDXZsjwAiEAzHBNligA08c5U3SySYcnkhurGg50\\ " "BllCI0eYQ9ggp/o=\\ " "-----END CERTIFICATE-----\\ "; static const char* s_tls_key = "-----BEGIN PRIVATE KEY-----\\ " "MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQglNni0t9Dg9icgG8w\\ " "kbfxWSS + TuNgbtNybIQXcm3NHpmhRANCAASS4EacicM3qXTrNVVDVVys68fkUO70\\ " "wLoXAlzZ7bTU/yESmrRD9IlLaeRtK5Yf/AFNMFp5c3a6GUHMxRYrv3Qo\\ " "-----END PRIVATE KEY-----\\ ";
2.2code
restfulserver_fn function
static void restfulserver_fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) { if (ev == MG_EV_ACCEPT & amp; & amp; fn_data != NULL) //1. If the message MG_EV_ACCEPT is received { struct mg_tls_opts opts = //1.1. Structure assignment { #ifdef TLS_TWOWAY .ca = mg_str(s_tls_ca), #endif .cert = mg_str(s_tls_cert), .key = mg_str(s_tls_key) }; mg_tls_init(c, & amp;opts); //1.2 put into context } if (ev == MG_EV_HTTP_MSG) //2. If the message MG_EV_HTTP_MSG is received { struct mg_http_message *hm = (struct mg_http_message *) ev_data; //1.get request, display if (mg_http_match_uri(hm, "/api/stats")) { // Print some statistics about currently established connections mg_printf(c, "HTTP/1.1 200 OK\r\\ Transfer-Encoding: chunked\r\\ \r\\ "); mg_http_printf_chunk(c, "ID PROTO TYPE LOCAL REMOTE\\ "); for (struct mg_connection *t = c->mgr->conns; t != NULL; t = t->next) { mg_http_printf_chunk(c, "%-3lu %4s %s %M %M\\ ", t->id, t->is_udp ? "UDP" : "TCP", t->is_listening ? "LISTENING" : t->is_accepted ? "ACCEPTED " : "CONNECTED", mg_print_ip, & amp;t->loc, mg_print_ip, & amp;t->rem); } mg_http_printf_chunk(c, ""); // Don't forget the last empty chunk } //2.post request returns result else if (mg_http_match_uri(hm, "/api/f2/*")) { mg_http_reply(c, 200, "", "{"result": "%.*s"}\\ ", (int) hm->uri .len, hm->uri.ptr); } //3. Display the current directory file list else { struct mg_http_serve_opts opts = {.root_dir = s_root_dir}; mg_http_serve_dir(c, ev_data, & amp;opts); } } (void) fn_data; }
main function
void main() { struct mg_mgr mgr; // Event manager mg_log_set(MG_LL_DEBUG); // Set log level mg_mgr_init( & amp;mgr); // Initialize event manager mg_http_listen( & amp;mgr, s_http_addr, restfulserver_fn, NULL); // Create HTTP listener mg_http_listen( & amp;mgr, s_https_addr, restfulserver_fn, (void*)1); // HTTPS listener for (;;) mg_mgr_poll( & amp;mgr, 1000); // Infinite event loop mg_mgr_free( & amp;mgr); }
2.3 Test
Start httpserver program
1.2.1 Browser access: http://127.0.0.1:8000:
A list of exe program root directory files will be displayed
1.2.2 Browser access: http://127.0.0.1:8000/api/stats:
will display:
1.2.3 Use postman: Send post request:
http://127.0.0.1:8000/api/f2/*,
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