int httpd_send_response()

in AZ3166/src/cores/arduino/httpserver/httpd_wsgi.c [420:496]
61 lines of code
15 McCabe index (conditional complexity)

int httpd_send_response(httpd_request_t *req, const char *first_line,
			char *content, int length, const char *content_type)
{
	int ret;

	/* Parse the header tags. This is valid only for GET or HEAD request */
	if (req->type == HTTPD_REQ_TYPE_GET ||
		req->type == HTTPD_REQ_TYPE_HEAD) {
		ret = httpd_purge_headers(req->sock);

		if (ret != kNoErr) {
			httpd_d("Unable to purge headers");
			return ret;
		}
	}

	ret = httpd_send(req->sock, first_line, strlen(first_line));
	if (ret != kNoErr) {
		httpd_d("Error in sending the first line");
		return ret;
	}

	/* Send default headers */
	httpd_d("HTTP Req for URI %s", req->wsgi->uri);
	if (req->wsgi->hdr_fields) {
		ret = httpd_send_default_headers(req->sock,
				req->wsgi->hdr_fields);
		if (ret != kNoErr) {
			httpd_d("Error in sending default headers");
			return ret;
		}
	}
	ret = httpd_send_header(req->sock, "Content-Type", content_type);
	if (ret != kNoErr) {
		httpd_d("Error in sending Content-Type");
		return ret;
	}

	/* Send Content-Length if non-chunked */
	if (!chunked_encoding(req)) {
		/* 6 should be more than enough */
		char con_len[6];
		snprintf(con_len, sizeof(con_len), "%d", length);

		ret = httpd_send_header(req->sock, "Content-Length", con_len);
		if (ret != kNoErr) {
			httpd_d("Error in sending Content-Length");
			return ret;
		}
	}

	httpd_send_crlf(req->sock);

	/* HTTP Head response does not require any content. It should
	 * contain identical headers as per the corresponding GET request */
	if (req->type != HTTPD_REQ_TYPE_HEAD) {
		if (chunked_encoding(req)) {
			ret = httpd_send_chunk(req->sock, content, length);
			if (ret != kNoErr) {
				httpd_d("Error in sending response content");
				return ret;
			}

			ret = httpd_send_chunk(req->sock, NULL, 0);
			if (ret != kNoErr) {
				httpd_d("Error in sending last chunk");
			}
		} else {
			/* Send our data */
			ret = httpd_send(req->sock, content, length);
			if (ret != kNoErr) {
				httpd_d("Error sending response");
			}
		}
	}
	return ret;
}