Fix IMAP multilines untagged response parsing issue #275.

examples/IMAP/Custom_Character_Decoding/Custom_Character_Decoding.ino

@@ -128,7 +128,7 @@ void setup()
 #endif
 
     Serial.print("Connecting to Wi-Fi");
-        
+
 #if defined(ARDUINO_RASPBERRY_PI_PICO_W)
     unsigned long ms = millis();
 #endif
@@ -379,7 +379,7 @@ void printSelectedMailboxInfo(SelectedFolderInfo sFolder)
         ESP_MAIL_PRINTF("First Unseen Message Number: %d\n", sFolder.unseenIndex());
     else
         ESP_MAIL_PRINTF("Unseen Messages: No\n");
-        
+
     if (sFolder.modSeqSupported())
         ESP_MAIL_PRINTF("Highest Modification Sequence: %d\n", sFolder.highestModSeq());
     for (size_t i = 0; i < sFolder.flagCount(); i++)
@@ -427,14 +427,15 @@ void printMessages(MB_VECTOR<IMAP_MSG_Item> &msgItems, bool headerOnly)
         Serial.println("****************************");
         ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
         ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-
-        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
 
         // The attachment status in search may be true in case the "multipart/mixed"
         // content type header was set with no real attachtment included.
         ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+        if (strlen(msg.flags))
+            ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
         if (strlen(msg.acceptLang))
             ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
         if (strlen(msg.contentLang))

examples/IMAP/External_Client/External_Client.ino

@@ -379,7 +379,7 @@ void printSelectedMailboxInfo(SelectedFolderInfo sFolder)
         ESP_MAIL_PRINTF("First Unseen Message Number: %d\n", sFolder.unseenIndex());
     else
         ESP_MAIL_PRINTF("Unseen Messages: No\n");
-        
+
     if (sFolder.modSeqSupported())
         ESP_MAIL_PRINTF("Highest Modification Sequence: %d\n", sFolder.highestModSeq());
     for (size_t i = 0; i < sFolder.flagCount(); i++)
@@ -413,12 +413,15 @@ void printMessages(MB_VECTOR<IMAP_MSG_Item> &msgItems, bool headerOnly)
         Serial.println("****************************");
         ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
         ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-
-        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
 
+        // The attachment status in search may be true in case the "multipart/mixed"
+        // content type header was set with no real attachtment included.
         ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+        if (strlen(msg.flags))
+            ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
         if (strlen(msg.acceptLang))
             ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
         if (strlen(msg.contentLang))

examples/IMAP/Firmware_Update_Attachment/Firmware_Update_Attachment.ino

@@ -115,7 +115,7 @@ void setup()
 #endif
 
     Serial.print("Connecting to Wi-Fi");
-        
+
 #if defined(ARDUINO_RASPBERRY_PI_PICO_W)
     unsigned long ms = millis();
 #endif
@@ -344,7 +344,7 @@ void printSelectedMailboxInfo(SelectedFolderInfo sFolder)
         ESP_MAIL_PRINTF("First Unseen Message Number: %d\n", sFolder.unseenIndex());
     else
         ESP_MAIL_PRINTF("Unseen Messages: No\n");
-        
+
     if (sFolder.modSeqSupported())
         ESP_MAIL_PRINTF("Highest Modification Sequence: %d\n", sFolder.highestModSeq());
     for (size_t i = 0; i < sFolder.flagCount(); i++)
@@ -392,14 +392,15 @@ void printMessages(MB_VECTOR<IMAP_MSG_Item> &msgItems, bool headerOnly)
         Serial.println("****************************");
         ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
         ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-
-        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
 
         // The attachment status in search may be true in case the "multipart/mixed"
         // content type header was set with no real attachtment included.
         ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+        if (strlen(msg.flags))
+            ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
         if (strlen(msg.acceptLang))
             ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
         if (strlen(msg.contentLang))

examples/IMAP/Mailbox_Changes_Notification/Mailbox_Changes_Notification.ino

@@ -215,7 +215,7 @@ void setup()
      * in case of lost internet connection for re-listening the mailbox.
      */
     config.network_connection_handler = connectWiFi;
-    
+
     // You can use TCP KeepAlive for more reliable of listen (idle) operation, please read this for detail.
     // https://github.com/mobizt/ESP-Mail-Client#using-tcp-session-keepalive-in-esp8266-and-esp32
     // You can use keepAlive in ESP8266 core version newer than v3.1.2.
@@ -334,7 +334,7 @@ void printSelectedMailboxInfo(SelectedFolderInfo sFolder)
         ESP_MAIL_PRINTF("First Unseen Message Number: %d\n", sFolder.unseenIndex());
     else
         ESP_MAIL_PRINTF("Unseen Messages: No\n");
-        
+
     if (sFolder.modSeqSupported())
         ESP_MAIL_PRINTF("Highest Modification Sequence: %d\n", sFolder.highestModSeq());
     for (size_t i = 0; i < sFolder.flagCount(); i++)
@@ -375,14 +375,15 @@ void printMessages(MB_VECTOR<IMAP_MSG_Item> &msgItems, bool headerOnly)
         Serial.println("****************************");
         ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
         ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-
-        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
 
         // The attachment status in search may be true in case the "multipart/mixed"
         // content type header was set with no real attachtment included.
         ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+        if (strlen(msg.flags))
+            ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
         if (strlen(msg.acceptLang))
             ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
         if (strlen(msg.contentLang))

examples/IMAP/Read_Email_Access_Token/Read_Email_Access_Token.ino

@@ -403,14 +403,15 @@ void printMessages(MB_VECTOR<IMAP_MSG_Item> &msgItems, bool headerOnly)
         Serial.println("****************************");
         ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
         ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-
-        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
 
         // The attachment status in search may be true in case the "multipart/mixed"
         // content type header was set with no real attachtment included.
         ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+        if (strlen(msg.flags))
+            ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
         if (strlen(msg.acceptLang))
             ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
         if (strlen(msg.contentLang))

examples/IMAP/Read_Sequence_Set/Read_Sequence_Set.ino

@@ -406,14 +406,15 @@ void printMessages(MB_VECTOR<IMAP_MSG_Item> &msgItems, bool headerOnly)
         Serial.println("****************************");
         ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
         ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-
-        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
-
+
         // The attachment status in search may be true in case the "multipart/mixed"
         // content type header was set with no real attachtment included.
         ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+        if (strlen(msg.flags))
+            ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
         if (strlen(msg.acceptLang))
             ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
         if (strlen(msg.contentLang))

examples/IMAP/Read_Single_Email/Read_Single_Email.ino

@@ -436,14 +436,15 @@ void printMessages(MB_VECTOR<IMAP_MSG_Item> &msgItems, bool headerOnly)
         Serial.println("****************************");
         ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
         ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-
-        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
-
+
         // The attachment status in search may be true in case the "multipart/mixed"
         // content type header was set with no real attachtment included.
         ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+        if (strlen(msg.flags))
+            ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
         if (strlen(msg.acceptLang))
             ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
         if (strlen(msg.contentLang))

examples/IMAP/Read_Single_Email_Loop/Read_Single_Email_Loop.ino

@@ -150,7 +150,7 @@ void setup()
 #endif
 
     Serial.print("Connecting to Wi-Fi");
-        
+
 #if defined(ARDUINO_RASPBERRY_PI_PICO_W)
     unsigned long ms = millis();
 #endif
@@ -440,7 +440,7 @@ void printSelectedMailboxInfo(SelectedFolderInfo sFolder)
         ESP_MAIL_PRINTF("First Unseen Message Number: %d\n", sFolder.unseenIndex());
     else
         ESP_MAIL_PRINTF("Unseen Messages: No\n");
-        
+
     if (sFolder.modSeqSupported())
         ESP_MAIL_PRINTF("Highest Modification Sequence: %d\n", sFolder.highestModSeq());
     for (size_t i = 0; i < sFolder.flagCount(); i++)
@@ -487,14 +487,15 @@ void printMessages(MB_VECTOR<IMAP_MSG_Item> &msgItems, bool headerOnly)
         Serial.println("****************************");
         ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
         ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-
-        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
 
         // The attachment status in search may be true in case the "multipart/mixed"
         // content type header was set with no real attachtment included.
         ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+        if (strlen(msg.flags))
+            ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
         if (strlen(msg.acceptLang))
             ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
         if (strlen(msg.contentLang))

examples/IMAP/Read_Single_Email_Loop_Silent_Mode/Read_Single_Email_Loop_Silent_Mode.ino

@@ -313,12 +313,15 @@ void printMessages(MB_VECTOR<IMAP_MSG_Item> &msgItems, bool headerOnly)
         Serial.println("****************************");
         ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
         ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-
-        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
 
+        // The attachment status in search may be true in case the "multipart/mixed"
+        // content type header was set with no real attachtment included.
         ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+        if (strlen(msg.flags))
+            ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
         if (strlen(msg.acceptLang))
             ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
         if (strlen(msg.contentLang))

examples/IMAP/Search_And_Read/Search_And_Read.ino

@@ -188,12 +188,12 @@ void setup()
     {
         imap_data.search.criteria.clear();
 
-         // Mark this message as read
+        // Mark this message as read
         MailClient.addFlag(&imap, msg_uid[i], F("\\Seen"), false /* Close session */, false /* Ignore response */);
 
         // Now Fech message by UID stored in msg_uid
         imap_data.fetch.uid = msg_uid[i];
-        
+
         MailClient.readMail(&imap, false /* keep session open for fetching message in opened mailbox later */);
     }
 
@@ -276,11 +276,15 @@ void printMessageData()
 
     ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
     ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-    ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-    ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
 
+    // The attachment status in search may be true in case the "multipart/mixed"
+    // content type header was set with no real attachtment included.
     ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+    ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+    if (strlen(msg.flags))
+        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
     if (strlen(msg.acceptLang))
         ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
     if (strlen(msg.contentLang))

examples/IMAP/Search_Emails/Search_Emails.ino

@@ -461,14 +461,15 @@ void printMessages(MB_VECTOR<IMAP_MSG_Item> &msgItems, bool headerOnly)
         ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
         // Message UID
         ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-
-        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
 
         // The attachment status in search may be true in case the "multipart/mixed"
         // content type header was set with no real attachtment included.
         ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+        if (strlen(msg.flags))
+            ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
         if (strlen(msg.acceptLang))
             ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
         if (strlen(msg.contentLang))

examples/IMAP/Search_Emails_Silent_Mode/Search_Emails_Silent_Mode.ino

@@ -252,10 +252,15 @@ void printMessages(MB_VECTOR<IMAP_MSG_Item> &msgItems, bool headerOnly)
 
         ESP_MAIL_PRINTF("Number: %d\n", msg.msgNo);
         ESP_MAIL_PRINTF("UID: %d\n", msg.UID);
-        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
-        ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
+
+        // The attachment status in search may be true in case the "multipart/mixed"
+        // content type header was set with no real attachtment included.
         ESP_MAIL_PRINTF("Attachment: %s\n", msg.hasAttachment ? "yes" : "no");
 
+        ESP_MAIL_PRINTF("Messsage-ID: %s\n", msg.ID);
+
+        if (strlen(msg.flags))
+            ESP_MAIL_PRINTF("Flags: %s\n", msg.flags);
         if (strlen(msg.acceptLang))
             ESP_MAIL_PRINTF("Accept Language: %s\n", msg.acceptLang);
         if (strlen(msg.contentLang))

library.json

@@ -1,6 +1,6 @@
 {
   "name": "ESP Mail Client",
-  "version": "3.2.0",
+  "version": "3.2.1",
   "keywords": "communication, email, imap, smtp, esp32, esp8266, samd, arduino",
   "description": "Arduino E-Mail Client Library to send, read and get incoming email notification for ESP32, ESP8266 and SAMD21 devices. The library also supported other Arduino Devices using Clients interfaces e.g. WiFiClient, EthernetClient, and GSMClient.",
   "repository": {

library.properties

@@ -1,6 +1,6 @@
 name=ESP Mail Client
 
-version=3.2.0
+version=3.2.1
 
 author=Mobizt
 

src/ESP_Mail_Client.cpp

@@ -2,7 +2,7 @@
 #define ESP_MAIL_CLIENT_CPP
 
 #include "ESP_Mail_Client_Version.h"
-#if !VALID_VERSION_CHECK(30200)
+#if !VALID_VERSION_CHECK(30201)
 #error "Mixed versions compilation."
 #endif
 

src/ESP_Mail_Client.h

@@ -2,7 +2,7 @@
 #define ESP_MAIL_CLIENT_H
 
 #include "ESP_Mail_Client_Version.h"
-#if !VALID_VERSION_CHECK(30200)
+#if !VALID_VERSION_CHECK(30201)
 #error "Mixed versions compilation."
 #endif
 

src/ESP_Mail_Client_Version.h

@@ -3,8 +3,8 @@
 
 #ifndef ESP_MAIL_VERSION
 
-#define ESP_MAIL_VERSION "3.2.0"
-#define ESP_MAIL_VERSION_NUM 30200
+#define ESP_MAIL_VERSION "3.2.1"
+#define ESP_MAIL_VERSION_NUM 30201
 
 /* The inconsistent file version checking to prevent mixed versions compilation. */
 #define VALID_VERSION_CHECK(ver) (ver == ESP_MAIL_VERSION_NUM)

src/ESP_Mail_Const.h

@@ -6,7 +6,7 @@
 #define ESP_MAIL_CONST_H
 
 #include "ESP_Mail_Client_Version.h"
-#if !VALID_VERSION_CHECK(30200)
+#if !VALID_VERSION_CHECK(30201)
 #error "Mixed versions compilation."
 #endif
 
@@ -2540,6 +2540,8 @@ struct esp_mail_imap_response_data
     long dataTime = millis();
     int chunkBufSize = 512;
     int chunkIdx = 0;
+    bool isUntaggedResponse = false;
+    bool untaggedRespCompleted = false;
     bool completedResponse = false;
     bool endSearch = false;
     struct esp_mail_message_header_t header;

src/ESP_Mail_Error.h

@@ -7,7 +7,7 @@
 #define ESP_MAIL_ERROR_H
 
 #include "ESP_Mail_Client_Version.h"
-#if !VALID_VERSION_CHECK(30200)
+#if !VALID_VERSION_CHECK(30201)
 #error "Mixed versions compilation."
 #endif