Implement M_SKIP in binkp protocol

app/Classes/Protocol/Binkp.php

@@ -489,6 +489,11 @@ final class Binkp extends BaseProtocol
 								$rc = $this->M_get($data);
 								break;
 
+							case self::BPM_SKIP:
+								Log::debug(sprintf('%s:- SKIP:Remote requested to skip file [%s]',self::LOGKEY,$data));
+								$rc = $this->M_skip($data);
+								break;
+
 							case self::BPM_GOTSKIP:
 								Log::debug(sprintf('%s:- GOT:Remote received, or already has a file [%s]',self::LOGKEY,$data));
 								$rc = $this->M_gotskip($data);
@@ -1008,7 +1013,45 @@ final class Binkp extends BaseProtocol
 	}
 
 	/**
-	 * M_GOT/M_SKIP commands
+	 * M_SKIP commands
+	 *
+	 * @param string $buf
+	 * @return bool
+	 * @throws \Exception
+	 */
+	private function M_skip(string $buf): bool
+	{
+		Log::info(sprintf('%s:+ Remote request to skip the file for now [%s]',self::LOGKEY,$buf));
+
+		if ($file = $this->file_parse($buf)) {
+			if ($this->send->nameas
+				&& ! strncasecmp(Arr::get($file,'file.name'),$this->send->nameas,self::MAX_PATH)
+				&& $this->send->mtime === Arr::get($file,'file.mtime')
+				&& $this->send->size === Arr::get($file,'file.size'))
+			{
+				if ((! $this->sessionGet(self::SE_SENDFILE)) && (! $this->sessionGet(self::SE_WAITGOT))) {
+					Log::error(sprintf('%s:! M_skip for unknown file [%s]',self::LOGKEY,$buf));
+
+				} else {
+					Log::info(sprintf('%s:= Packet/File [%s], type [%d] skipped.',self::LOGKEY,$this->send->nameas,$this->send->type));
+					$this->sessionClear(self::SE_WAITGOT|self::SE_SENDFILE);
+
+					$this->send->close(FALSE,$this->node);
+				}
+
+			} else {
+				Log::error(sprintf('%s:! M_skip not for our file? [%s]',self::LOGKEY,$buf));
+			}
+
+		} else {
+			Log::error(sprintf('%s:! UNPARSABLE file info [%s]',self::LOGKEY,$buf));
+		}
+
+		return TRUE;
+	}
+
+	/**
+	 * M_GOTSKIP command
 	 *
 	 * @param string $buf
 	 * @return bool