diff --git a/adb/adb.cpp b/adb/adb.cpp
index c03d7db..484e561 100644
--- a/adb/adb.cpp
+++ b/adb/adb.cpp
@@ -857,8 +857,7 @@
 #if ADB_HOST
         SendOkay(reply_fd);
 #endif
-        SendProtocolString(reply_fd, listeners);
-        return 1;
+        return SendProtocolString(reply_fd, listeners);
     }
 
     if (!strcmp(service, "killforward-all")) {
diff --git a/adb/adb_client.cpp b/adb/adb_client.cpp
index cb5e488..bbc4dc7 100644
--- a/adb/adb_client.cpp
+++ b/adb/adb_client.cpp
@@ -124,7 +124,7 @@
 
 int _adb_connect(const std::string& service, std::string* error) {
     D("_adb_connect: %s", service.c_str());
-    if (service.empty() || service.size() > 1024) {
+    if (service.empty() || service.size() > MAX_PAYLOAD_V1) {
         *error = android::base::StringPrintf("bad service name length (%zd)",
                                              service.size());
         return -1;
diff --git a/adb/adb_io.cpp b/adb/adb_io.cpp
index 176b7bd..ae16834 100644
--- a/adb/adb_io.cpp
+++ b/adb/adb_io.cpp
@@ -22,14 +22,16 @@
 
 #include <android-base/stringprintf.h>
 
+#include "adb.h"
 #include "adb_trace.h"
 #include "adb_utils.h"
 #include "sysdeps.h"
 
 bool SendProtocolString(int fd, const std::string& s) {
-    int length = s.size();
-    if (length > 0xffff) {
-        length = 0xffff;
+    unsigned int length = s.size();
+    if (length > MAX_PAYLOAD_V1 - 4) {
+        errno = EMSGSIZE;
+        return false;
     }
 
     // The cost of sending two strings outweighs the cost of formatting.
diff --git a/adb/sockets.cpp b/adb/sockets.cpp
index eb0ce85..d8e4e93 100644
--- a/adb/sockets.cpp
+++ b/adb/sockets.cpp
@@ -698,17 +698,17 @@
         p = s->pkt_first;
     }
 
-        /* don't bother if we can't decode the length */
+    /* don't bother if we can't decode the length */
     if(p->len < 4) return 0;
 
     len = unhex(p->data, 4);
-    if((len < 1) ||  (len > 1024)) {
+    if ((len < 1) || (len > MAX_PAYLOAD_V1)) {
         D("SS(%d): bad size (%d)", s->id, len);
         goto fail;
     }
 
     D("SS(%d): len is %d", s->id, len );
-        /* can't do anything until we have the full header */
+    /* can't do anything until we have the full header */
     if((len + 4) > p->len) {
         D("SS(%d): waiting for %d more bytes", s->id, len+4 - p->len);
         return 0;