diff --git a/examples/http_client/Makefile b/examples/http_client/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..906d32f0b749edf553fa2b1362e5e20dc257f7b6 --- /dev/null +++ b/examples/http_client/Makefile @@ -0,0 +1,12 @@ +# Copyright (c) 2014 Cesanta Software +# All rights reserved + +CFLAGS = -W -Wall -I../.. -g -O0 $(CFLAGS_EXTRA) +SOURCES = http_client.c ../../mongoose.c +PROG = http_client + +unix: $(SOURCES) + $(CC) -o $(PROG) $(SOURCES) $(CFLAGS) + +clean: + rm -rf $(PROG) *.exe *.dSYM *.obj *.exp .*o *.lib diff --git a/examples/http_client/http_client.c b/examples/http_client/http_client.c new file mode 100644 index 0000000000000000000000000000000000000000..ecf21c6789e1a5aa3f1bdadf9dd1b5edd06ca1a3 --- /dev/null +++ b/examples/http_client/http_client.c @@ -0,0 +1,82 @@ +// Copyright (c) 2014 Cesanta Software +// All rights reserved +// +// This example demostrates how to connect to the remote Web server, +// download data, process it and send back a reply. + +#include <signal.h> +#include <stdlib.h> + +#include "mongoose.h" + +static int s_received_signal = 0; +static struct mg_server *s_server = NULL; +static const char *s_remote_host = "glosbe.com"; +static int s_remote_port = 80; + +static void signal_handler(int sig_num) { + signal(sig_num, signal_handler); + s_received_signal = sig_num; +} + +static int ev_handler(struct mg_connection *conn, enum mg_event ev) { + struct mg_connection *client, *orig; + + switch (ev) { + case MG_AUTH: + return MG_TRUE; + + case MG_CONNECT: + // Send request to the remote host. + // TODO(lsm): handle connect error here. + mg_printf(conn, "GET %s HTTP/1.0\r\nHost: %s\r\n\r\n", + "/gapi/translate?from=eng&dest=fra&format=json&phrase=cat", + s_remote_host); + return MG_TRUE; + + case MG_REPLY: + // Send reply to the original connection + orig = (struct mg_connection *) conn->connection_param; + mg_send_header(orig, "Content-Type", "text/plain"); + mg_send_data(orig, conn->content, conn->content_len); + mg_send_data(orig, "", 0); // Last chunk: mark the end of reply + + // Disconnect connections + orig->connection_param = NULL; + conn->connection_param = NULL; + return MG_TRUE; + + case MG_REQUEST: + if ((client = mg_connect(s_server, s_remote_host, s_remote_port, 0)) != NULL) { + // Interconnect requests + client->connection_param = conn; + conn->connection_param = client; + return MG_MORE; + } else { + mg_printf_data(conn, "%s", "cannot send API request"); + return MG_TRUE; + } + + default: + return MG_FALSE; + } +} + +int main(void) { + s_server = mg_create_server(NULL, ev_handler); + + mg_set_option(s_server, "listening_port", "8080"); + + // Setup signal handlers + signal(SIGTERM, signal_handler); + signal(SIGINT, signal_handler); + + printf("Listening on port %s\n", mg_get_option(s_server, "listening_port")); + while (s_received_signal == 0) { + mg_poll_server(s_server, 1000); + } + mg_destroy_server(&s_server); + printf("Existing on signal %d\n", s_received_signal); + + return EXIT_SUCCESS; +}