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Enhance HTTP client example

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This commit is contained in:
Sergey Lyubka 2022-03-15 14:14:36 +00:00
parent 1125b1f545
commit 870431dc1a
1 changed files with 22 additions and 5 deletions
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27
examples/http-client/main.c
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@ -13,6 +13,7 @@
// The very first web page in history. You can replace it from command line
static const char *s_url = "http://info.cern.ch/";
static const char *s_post = NULL; // POST data
// Print HTTP response and signal that we're done
static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
@ -27,11 +28,16 @@ static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
}
// Send request
int content_length = s_post ? strlen(s_post) : 0;
mg_printf(c,
"GET %s HTTP/1.0\r\n"
"%s %s HTTP/1.0\r\n"
"Host: %.*s\r\n"
"Content-Type: octet-stream\r\n"
"Content-Length: %d\r\n"
"\r\n",
mg_url_uri(s_url), (int) host.len, host.ptr);
s_post ? "POST" : "GET", mg_url_uri(s_url), (int) host.len,
host.ptr, content_length);
mg_send(c, s_post, content_length);
} else if (ev == MG_EV_HTTP_MSG) {
// Response is received. Print it
struct mg_http_message *hm = (struct mg_http_message *) ev_data;
@ -44,9 +50,20 @@ static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
}
int main(int argc, char *argv[]) {
struct mg_mgr mgr; // Event manager
bool done = false; // Event handler flips it to true
if (argc > 1) s_url = argv[1]; // Use URL from command line
struct mg_mgr mgr; // Event manager
bool done = false; // Event handler flips it to true
int i;
// Parse command-line flags
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "-d") == 0) {
s_post = argv[++i];
} else {
break;
}
}
if (i < argc) s_url = argv[i];
mg_log_set("3"); // Set to 0 to disable debug
mg_mgr_init(&mgr); // Initialise event manager
mg_http_connect(&mgr, s_url, fn, &done); // Create client connection