diff --git a/lib/bcoin/protocol/parser.js b/lib/bcoin/protocol/parser.js
index 36ac8048..0fb97ff4 100644
--- a/lib/bcoin/protocol/parser.js
+++ b/lib/bcoin/protocol/parser.js
@@ -154,23 +154,21 @@ Parser.prototype.parsePayload = function parsePayload(cmd, p) {
 
 Parser.parsePing = function parsePing(p) {
   p = new BufferReader(p);
-
-  if (p.left() < 8)
-    throw new Error('pong packet is too small');
+  p.start();
 
   return {
-    nonce: p.readU64()
+    nonce: p.readU64(),
+    _size: p.end()
   };
 };
 
 Parser.parsePong = function parsePong(p) {
   p = new BufferReader(p);
-
-  if (p.left() < 8)
-    throw new Error('ping packet is too small');
+  p.start();
 
   return {
-    nonce: p.readU64()
+    nonce: p.readU64(),
+    _size: p.end()
   };
 };
 
@@ -178,29 +176,17 @@ Parser.parseVersion = function parseVersion(p) {
   var version, services, ts, recv, from, nonce, agent, height, relay;
 
   p = new BufferReader(p);
+  p.start();
 
-  version = p.readU32();
+  version = p.read32();
   services = p.readU64();
-
-  // Timestamp
   ts = p.read64();
-
-  // Our address (recv)
   recv = Parser.parseAddress(p, false);
-
-  // Their Address (from)
   from = Parser.parseAddress(p, false);
-
-  // Nonce, very dramatic
   nonce = p.readU64();
-
-  // User agent length
   agent = p.readVarString('ascii');
+  height = p.read32();
 
-  // Start height
-  height = p.readU32();
-
-  // Relay
   try {
     relay = p.readU8() === 1;
   } catch (e) {
@@ -216,9 +202,13 @@ Parser.parseVersion = function parseVersion(p) {
   try {
     services = services.toNumber();
   } catch (e) {
-    services = 1;
+    services = 0;
   }
 
+  assert(version >= 0, 'Version is negative.');
+  assert(ts >= 0, 'Timestamp is negative.');
+  assert(height >= 0, 'Height is negative.');
+
   return {
     version: version,
     services: services,
@@ -232,7 +222,8 @@ Parser.parseVersion = function parseVersion(p) {
     nonce: nonce,
     agent: agent,
     height: height,
-    relay: relay
+    relay: relay,
+    _size: p.end()
   };
 };
 
@@ -241,6 +232,7 @@ Parser.parseInvList = function parseInvList(p) {
   var i, count;
 
   p = new BufferReader(p);
+  p.start();
 
   count = p.readUIntv();
 
@@ -251,6 +243,8 @@ Parser.parseInvList = function parseInvList(p) {
     });
   }
 
+  items._size = p.end();
+
   return items;
 };
 
@@ -297,6 +291,7 @@ Parser.parseHeaders = function parseHeaders(p) {
   var i, count;
 
   p = new BufferReader(p);
+  p.start();
 
   count = p.readUIntv();
 
@@ -312,6 +307,8 @@ Parser.parseHeaders = function parseHeaders(p) {
     });
   }
 
+  headers._size = p.end();
+
   return headers;
 };
 
@@ -346,8 +343,8 @@ Parser.parseBlock = function parseBlock(p) {
     bits: bits,
     nonce: nonce,
     txs: txs,
-    _size: p.end(),
-    _witnessSize: witnessSize
+    _witnessSize: witnessSize,
+    _size: p.end()
   };
 };
 
@@ -413,13 +410,13 @@ Parser.parseInput = function parseInput(p) {
   sequence = p.readU32();
 
   return {
-    _size: p.end(),
     prevout: {
       hash: hash,
       index: index
     },
     script: script,
-    sequence: sequence
+    sequence: sequence,
+    _size: p.end()
   };
 };
 
@@ -433,9 +430,9 @@ Parser.parseOutput = function parseOutput(p) {
   script = new bcoin.script(p.readVarBytes());
 
   return {
-    _size: p.end(),
     value: value,
-    script: script
+    script: script,
+    _size: p.end()
   };
 };
 
@@ -443,6 +440,7 @@ Parser.parseCoin = function parseCoin(p, extended) {
   var version, height, value, script, hash, index, spent;
 
   p = new BufferReader(p);
+  p.start();
 
   version = p.readU32();
   height = p.readU32();
@@ -471,7 +469,8 @@ Parser.parseCoin = function parseCoin(p, extended) {
     script: script,
     hash: hash,
     index: index,
-    spent: spent
+    spent: spent,
+    _size: p.end()
   };
 };
 
@@ -593,8 +592,8 @@ Parser.parseWitnessTX = function parseWitnessTX(p) {
     locktime: locktime,
     // _raw: raw,
     // _size: raw.length,
-    _size: p.end(),
-    _witnessSize: witnessSize + 2
+    _witnessSize: witnessSize + 2,
+    _size: p.end()
   };
 };
 
@@ -611,8 +610,8 @@ Parser.parseWitness = function parseWitness(p) {
     witness.push(p.readVarBytes());
 
   return {
-    _size: p.end(),
-    witness: new bcoin.script.witness(witness)
+    witness: new bcoin.script.witness(witness),
+    _size: p.end()
   };
 };
 
@@ -620,6 +619,7 @@ Parser.parseReject = function parseReject(p) {
   var message, ccode, reason, data;
 
   p = new BufferReader(p);
+  p.start();
 
   message = p.readVarString('ascii');
   ccode = p.readU8();
@@ -630,7 +630,8 @@ Parser.parseReject = function parseReject(p) {
     message: message,
     ccode: constants.rejectByVal[ccode] || ccode,
     reason: reason,
-    data: data
+    data: data,
+    _size: p.end()
   };
 };
 
@@ -638,6 +639,7 @@ Parser.parseAddress = function parseAddress(p, full) {
   var ts, services, ip, port;
 
   p = new BufferReader(p);
+  p.start();
 
   if (full) {
     ts = p.readU32();
@@ -666,7 +668,8 @@ Parser.parseAddress = function parseAddress(p, full) {
     witness: (services & constants.services.witness) !== 0,
     ipv6: utils.array2ip(ip, 6),
     ipv4: utils.array2ip(ip, 4),
-    port: port
+    port: port,
+    _size: p.end()
   };
 };
 
@@ -675,12 +678,15 @@ Parser.parseAddr = function parseAddr(p) {
   var i, count;
 
   p = new BufferReader(p);
+  p.start();
 
   count = p.readUIntv();
 
   for (i = 0; i < count; i++)
     addrs.push(Parser.parseAddress(p, true));
 
+  addrs._size = p.end();
+
   return addrs;
 };