libunit-wasm: Add a luw_get_http_total_content_sent() function

This function returns the total amount of content that the Wasm module
has received so far.

This will be used in the rusty API's uwr_get_http_content_str() function
which returns the body content as a string. Due to the body content not
being null-terminated we need to know how much data to use for the
string, for which we are currently using uwr_get_http_content_len(),
which could in some cases return too much if a request is being split
over multiple calls the module.

Signed-off-by: Andrew Clayton <a.clayton@nginx.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/c/libunit-wasm.c b/src/c/libunit-wasm.c
index c0c02c5..69fe4c0 100644
--- a/src/c/libunit-wasm.c
+++ b/src/c/libunit-wasm.c
@@ -207,6 +207,12 @@ size_t luw_get_http_content_sent(const luw_ctx_t *ctx)
 	return ctx->req->content_sent;
 }
 
+/* Returns the size of the overall content sent so far */
+size_t luw_get_http_total_content_sent(const luw_ctx_t *ctx)
+{
+	return ctx->req->total_content_sent;
+}
+
 bool luw_http_is_tls(const luw_ctx_t *ctx)
 {
 	return ctx->req->tls;