From 4858184e19d4bafa6d4758211d2950dd51333f3d Mon Sep 17 00:00:00 2001
From: Shubham Kulkarni <shubham.kulkarni@espressif.com>
Date: Thu, 12 Mar 2020 19:12:27 +0530
Subject: [PATCH] esp_http_client: Add helper API to read larger data chunks
 from HTTP Stream

---
 components/esp_http_client/esp_http_client.c       | 13 +++++++++++++
 .../esp_http_client/include/esp_http_client.h      | 14 ++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/components/esp_http_client/esp_http_client.c b/components/esp_http_client/esp_http_client.c
index 69ced3406..570496a4b 100644
--- a/components/esp_http_client/esp_http_client.c
+++ b/components/esp_http_client/esp_http_client.c
@@ -1315,3 +1315,16 @@ void esp_http_client_add_auth(esp_http_client_handle_t client)
         ESP_LOGW(TAG, "This request requires authentication, but does not provide header information for that");
     }
 }
+
+int esp_http_client_read_response(esp_http_client_handle_t client, char *buffer, int len)
+{
+    int read_len = 0;
+    while (read_len < len) {
+        int data_read = esp_http_client_read(client, buffer + read_len, len - read_len);
+        if (data_read <= 0) {
+            return read_len;
+        }
+        read_len += data_read;
+    }
+    return read_len;
+}
diff --git a/components/esp_http_client/include/esp_http_client.h b/components/esp_http_client/include/esp_http_client.h
index 8d9243a0b..b1c9aae32 100644
--- a/components/esp_http_client/include/esp_http_client.h
+++ b/components/esp_http_client/include/esp_http_client.h
@@ -497,6 +497,20 @@ void esp_http_client_add_auth(esp_http_client_handle_t client);
  */
 bool esp_http_client_is_complete_data_received(esp_http_client_handle_t client);
 
+/**
+ * @brief      Helper API to read larger data chunks
+ *             This is a helper API which internally calls `esp_http_client_read` multiple times till the end of data is reached or till the buffer gets full.
+ *
+ * @param[in]  client   The esp_http_client handle
+ * @param      buffer   The buffer
+ * @param[in]  len      The buffer length
+ *
+ * @return
+ *     - Length of data was read
+ */
+
+int esp_http_client_read_response(esp_http_client_handle_t client, char *buffer, int len);
+
 #ifdef __cplusplus
 }
 #endif