diff --git a/src/common/protocol.h b/src/common/protocol.h
--- a/src/common/protocol.h
+++ b/src/common/protocol.h
@@ -20,6 +20,7 @@
 #ifndef DISTREN_PROTOCOL_H
 #define DISTREN_PROTOCOL_H
 
+#include <openssl/evp.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ -138,12 +139,34 @@ enum distren_request_type
     DISTREN_REQUEST_STATUS_GET = 10,
 
     /**
+     * Declare that a client is preparing to post a file using a
+     * particular post-id and with a user-friendly filename.
+     *
+     * Yes, this is evil. Yes, this tries to replicate
+     * well-established protocols like FTP and HTTP (which is
+     * sometimes itself mistreated as FTP). Yes, this will be
+     * buggy. Why is it needed? For my personal coding experience and
+     * because I don't know off-hand of any libraries that allow a
+     * file upload to be interleaved over an existing connection with
+     * its own protocol. Over TCP? We aren't doing real-time streaming
+     * or anything :-p.
+     *
+     * Possible future expansions: ``transparent'' zlib compression.
+     *
+     * DATA: struct distren_request_file_post_start
+     *
+     * REQUIRED: DISTREN_SERVERTYPE_SUBMIT, DISTREN_SERVERTYPE_DISTRIBUTE
+     */
+    DISTREN_REQUEST_FILE_POST_START = 11,
+
+    /**
      * Allow a client to upload a job tarball over a remoteio line.  A
      * client that wants to do this must take care not to overbuffer
      * his sendqueue so as to be able to respond to PING packets in
      * time. A server receiving such a message will want to write the
-     * file as directly to disk as possible to avoid bagging a server
-     * down in swap.
+     * file as directly to disk as possible to avoid bogging the
+     * server down in swap. This packet may only be sent if
+     * DISTREN_REQUEST_FILE_POST_START has previously been sent.
      *
      * It is potential that if a server is DISTREN_SERVERTYPE_SUBMIT
      * but not also DISTREN_SERVERTYPE_DISTRIBUTE, that this request
@@ -159,7 +182,18 @@ enum distren_request_type
      *
      * REQUIRED: DISTREN_SERVERTYPE_SUBMIT, DISTREN_SERVERTYPE_DISTRIBUTE
      */
-    DISTREN_REQUEST_FILE_POST = 11,
+    DISTREN_REQUEST_FILE_POST = 12,
+
+    /**
+     * Marks a post-id's file as having completely uploaded. Provides
+     * verification information so that the file's integrity may be
+     * verified.
+     *
+     * DATA: struct distren_request_file_post_finish
+     *
+     * REQUIRED: DISTREN_SERVERTYPE_SUBMIT, DISTREN_SERVERTYPE_DISTRIBUTE
+     */
+    DISTREN_REQUEST_FILE_POST_FINISH = 13,
 
     /**
      * Request information about obtaining a file (such as a
@@ -169,7 +203,7 @@ enum distren_request_type
      *
      * REQUIRED: DISTREN_SERVERTYPE_DISTRIBUTE
      */
-    DISTREN_REQUEST_FILE_FIND = 12,
+    DISTREN_REQUEST_FILE_FIND = 14,
 
     /**
      * Provide information about obtaining a file (such as a URL).
@@ -178,7 +212,7 @@ enum distren_request_type
      *
      * REQUIRED: DISTREN_SERVERTYPE_DISTRIBUTE
      */
-    DISTREN_REQUEST_FILE = 13,
+    DISTREN_REQUEST_FILE = 15,
   };
 
 struct distren_request
@@ -202,6 +236,45 @@ struct distren_request_version
   char package_string[DISTREN_REQUEST_VERSION_PACKAGE_STRING_LEN + 1];
 };
 
+#define DISTREN_REQUEST_FILE_POST_NAME_LEN (64)
+struct distren_request_file_post_start
+{
+  /**
+   * Uniquely identify this file upload (per connection).
+   */
+  uint32_t post_id;
+  /**
+   * The user-friendly filename
+   */
+  char filename[DISTREN_REQUEST_FILE_POST_NAME_LEN];
+};
+
+#define DISTREN_REQUEST_FILE_POST_DATA_LEN (1024*128)
+struct distren_request_file_post
+{
+  /**
+   * Uniquely identify this file upload (per connection).
+   */
+  uint32_t post_id;
+};
+
+struct distren_request_file_post_finish
+{
+  /**
+   * Uniquely identify this file upload (per connection).
+   */
+  uint32_t post_id;
+  /**
+   * Marks this upload as failed/cancelled.
+   */
+  uint32_t cancel;
+  /**
+   * An SHA1sum of the entire file. Only set if last_packet is
+   * nonzero. Should be otherwise ignored.
+   */
+  unsigned char sha[EVP_MAX_MD_SIZE];
+};
+
 /**
  * initializes and allocates request
  */