Implement sending binary data

main.c

@@ -80,7 +80,21 @@ void event_handler(struct mg_connection *conn, int ev, void *ev_data)
         }
         sb_finish(&sb);
 
-        mg_http_reply(conn, result->status_code, sb.items, "%s", result->body.items);
+        if (result->type == ROUTE_RESULT_TEXT) {
+            mg_http_reply(conn, result->status_code, sb.items, "%s", result->body.items);
+        } else if (result->type == ROUTE_RESULT_BINARY) {
+            char *reply = fmt(
+                "HTTP/1.1 %d OK\r\n"
+                "%s"
+                "Content-Length: %zu\r\n"
+                "\r\n",
+                result->status_code,
+                sb.items,
+                result->body.count
+            );
+            mg_printf(conn, "%s", reply);
+            mg_send(conn, result->body.items, result->body.count);
+        }
     }
 }
 

routes.c

@@ -16,6 +16,7 @@
 void make_internal_server_error(Route_Result *result)
 {
     result->status_code = 500;
+    result->type = ROUTE_RESULT_TEXT;
     list_append(&result->headers, "Content-Type: text/plain");
     sb_append_nstr(&result->body, INTERNAL_SERVER_ERROR_MSG);
     sb_finish(&result->body);
@@ -27,16 +28,22 @@ void make_application_json(Route_Result *result, int code, cJSON *root)
     defer { free(root_text); }
 
     result->status_code = code;
+    result->type = ROUTE_RESULT_TEXT;
     list_append(&result->headers, clonestr("Content-Type: application/json"));
     sb_append_nstr(&result->body, root_text);
     sb_finish(&result->body);
 }
 
-void make_image_xicon(Route_Result *result, int code, char *icon)
+void make_binary(Route_Result *result, char *content_type, int code, char *data, size_t size)
 {
+    char type[100];
+    snprintf(type, sizeof(type), "Content-Type: %s", content_type);
     result->status_code = code;
-    list_append(&result->headers, clonestr("Content-Type: image/x-icon"));
-    sb_append_nstr(&result->body, icon);
+    result->type = ROUTE_RESULT_BINARY;
+    list_append(&result->headers, clonestr(type));
+    for (size_t i = 0; i < size; i++) {
+        sb_append_char(&result->body, data[i]);
+    }
     sb_finish(&result->body);
 }
 
@@ -46,6 +53,7 @@ void make_text(Route_Result *result, char *subtype, int code, char *in)
     snprintf(type, sizeof(type), "Content-Type: text/%s", subtype);
 
     result->status_code = code;
+    result->type = ROUTE_RESULT_TEXT;
     list_append(&result->headers, clonestr(type));
     sb_append_nstr(&result->body, in);
     sb_finish(&result->body);
@@ -166,7 +174,7 @@ ROUTE_HANDLER(favicon)
     }
     sb_finish(&sb);
 
-    make_image_xicon(result, 200, sb.items);
+    make_binary(result, "image/x-icon", 200, sb.items, sb.count);
 }
 
 #if MY_DEBUG

routes.h

@@ -5,6 +5,10 @@
 #include "mongoose/mongoose.h"
 
 typedef struct {
+    enum {
+        ROUTE_RESULT_TEXT,
+        ROUTE_RESULT_BINARY,
+    } type;
     int status_code;
     NString_List headers;
     String_Builder body;