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makes it more readable

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Signed-off-by: yermin <yermin@buaa.edu.cn>
This commit is contained in:
yermin 2021-09-24 11:30:21 +08:00
parent c490ff8ae7
commit 8f693b92a7
1 changed files with 27 additions and 22 deletions
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49
examples/http-reverse-proxy/main.c
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@ -32,28 +32,10 @@ static void forward_request(struct mg_http_message *hm,
(int) hm->uri.len, hm->uri.ptr));
}
static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
static void forward_fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
struct mg_connection *c2 = fn_data;
if (ev == MG_EV_HTTP_MSG) {
struct mg_http_message *hm = (struct mg_http_message *) ev_data;
if (c->label[0] != 'B' && c2 == NULL) {
// Client request, create backend connection Note that we're passing
// client connection `c` as fn_data for the created backend connection.
// This way, we tie together these two connections via `fn_data` pointer:
// client's c->fn_data points to the backend connection, and backend's
// c->fn_data points to the client connection
c2 = mg_connect(c->mgr, s_backend_url, fn, c);
c->fn_data = c2;
if (c2 != NULL) {
c2->is_hexdumping = 1;
c2->label[0] = 'B'; // Mark this connection as backend
} else {
c->is_closing = 1;
}
}
if (c2 != NULL && c2->label[0] == 'B') forward_request(hm, c2);
} else if (ev == MG_EV_READ) {
if (c->label[0] == 'B' && c2 != NULL) {
if (ev == MG_EV_READ) {
if (c2 != NULL) {
// All incoming data from the backend, forward to the client
mg_send(c2, c->recv.buf, c->recv.len);
mg_iobuf_del(&c->recv, 0, c->recv.len);
@ -63,8 +45,31 @@ static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
struct mg_tls_opts opts = {.ca = "ca.pem"};
mg_tls_init(c, &opts);
}
}
(void)ev_data;
}
static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
struct mg_connection *c2 = fn_data;
if (ev == MG_EV_HTTP_MSG) {
struct mg_http_message *hm = (struct mg_http_message *) ev_data;
// Client request, create backend connection Note that we're passing
// client connection `c` as fn_data for the created backend connection.
c2 = mg_connect(c->mgr, s_backend_url, forward_fn, c);
c->fn_data = c2;
if (c2 != NULL) {
forward_request(hm, c2);
} else {
c->is_closing = 1;
}
} else if (ev == MG_EV_CONNECT) {
if (mg_url_is_ssl(s_backend_url)) {
struct mg_tls_opts opts = {.ca = "ca.pem"};
mg_tls_init(c, &opts);
}
} else if (ev == MG_EV_CLOSE) {
if (c->label[0] != 'B' && c2 != NULL) c2->is_closing = 1;
if (c2 != NULL) c2->is_closing = 1;
c->fn_data = NULL;
}
}