diff -r a5a142fea2ae -r 9a49c245a49c src/server/test/io.c
--- a/src/server/test/io.c	Tue Sep 12 18:08:11 2023 +0200
+++ b/src/server/test/io.c	Sat Mar 30 12:35:09 2024 +0100
@@ -445,6 +445,7 @@
     size_t msglen = strlen(msg);
     
     st->max_write = 1; // limit the test stream max write size
+    io_set_max_writes(1);
     
     // only 1 byte of the header is written, 0 bytes of msg
     ssize_t w = net_write(http, msg, msglen);
@@ -493,6 +494,7 @@
     
     // limit first write to 3 to only write the header
     st->max_write = 3;
+    io_set_max_writes(1);
     
     ssize_t w = net_write(http, msg, msglen);
     
@@ -535,6 +537,7 @@
     TestIOStream *st = testutil_iostream(2048, TRUE);
     IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
     httpstream_enable_chunked_write(http);
+    io_set_max_writes(1);
     
     UCX_TEST_BEGIN;
     
@@ -595,6 +598,7 @@
     TestIOStream *st = testutil_iostream(2048, TRUE);
     IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
     httpstream_enable_chunked_write(http);
+    io_set_max_writes(1);
     
     UCX_TEST_BEGIN;
     
@@ -654,6 +658,7 @@
     TestIOStream *st = testutil_iostream(2048, TRUE);
     IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
     httpstream_enable_chunked_write(http);
+    io_set_max_writes(1);
     
     UCX_TEST_BEGIN;
     
@@ -700,6 +705,7 @@
     TestIOStream *st = testutil_iostream(2048, TRUE);
     IOStream *http = httpstream_new(sn->pool, (IOStream*)st);
     httpstream_enable_chunked_write(http);
+    io_set_max_writes(1);
     
     UCX_TEST_BEGIN;