From 4afebdcb2b0ff40b7bbf8595d4bd0ee451fbef45 Mon Sep 17 00:00:00 2001
From: Dmitry Frank <mail@dmitryfrank.com>
Date: Tue, 6 Feb 2018 01:24:29 +0200
Subject: [PATCH] Add UDP client example
CL: Mongoose Web Server: Add UDP client example
Resolves https://github.com/cesanta/mongoose/issues/886
PUBLISHED_FROM=fcce2f1de3a800147e9246ffa01c428c1b8f552b
---
examples/udp_client/Makefile | 2 ++
examples/udp_client/udp_client.c | 60 ++++++++++++++++++++++++++++++++
2 files changed, 62 insertions(+)
create mode 100644 examples/udp_client/Makefile
create mode 100644 examples/udp_client/udp_client.c
diff --git a/examples/udp_client/Makefile b/examples/udp_client/Makefile
new file mode 100644
index 000000000..00ebca381
--- /dev/null
+++ b/examples/udp_client/Makefile
@@ -0,0 +1,2 @@
+PROG = udp_client
+include ../examples.mk
diff --git a/examples/udp_client/udp_client.c b/examples/udp_client/udp_client.c
new file mode 100644
index 000000000..faeb2ebed
--- /dev/null
+++ b/examples/udp_client/udp_client.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2014-2018 Cesanta Software Limited
+ * All rights reserved
+ *
+ * This program sends provided data to the provided UDP server and port, and
+ * then prints all incoming data, until user stops the program.
+ */
+
+#include "mongoose.h"
+
+#define ADDR_BUF_SIZE 256
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+ switch (ev) {
+ case MG_EV_RECV:
+ fprintf(stderr, "%.*s", (int) nc->recv_mbuf.len, nc->recv_mbuf.buf);
+ nc->recv_mbuf.len = 0;
+ break;
+ default:
+ break;
+ }
+
+ (void) ev_data;
+}
+
+int main(int argc, char *argv[]) {
+ struct mg_mgr mgr;
+ char addr[ADDR_BUF_SIZE];
+
+ mg_mgr_init(&mgr, NULL);
+
+ if (argc != 3) {
+ fprintf(stderr, "Usage: %s <server:port> <data>\n", argv[0]);
+ exit(EXIT_FAILURE);
+ }
+
+ snprintf(addr, sizeof(addr), "udp://%s", argv[1]);
+
+ fprintf(stderr, "Connecting to '%s'\n", addr);
+
+ struct mg_connection *nc = mg_connect(&mgr, addr, ev_handler);
+
+ if (nc == NULL) {
+ fprintf(stderr, "Failed to connect");
+ exit(1);
+ }
+
+ fprintf(stderr, "Sending '%s'\n", argv[2]);
+
+ mg_send(nc, argv[2], strlen(argv[2]));
+
+ fprintf(stderr, "Waiting for data\n");
+
+ for (;;) {
+ mg_mgr_poll(&mgr, 10);
+ }
+ mg_mgr_free(&mgr);
+
+ return 0;
+}
--
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