.

wcfs/internal/wcfs_misc.cpp

@@ -167,7 +167,7 @@ error map_into(void *addr, size_t size, int prot, int flags, const os::File f, o
 namespace strings {
 
 bool has_prefix(const string &s, const string &prefix) {
-    return s.compare(0, prefix.size(), prefix);
+    return s.compare(0, prefix.size(), prefix) == 0;    // XXX -> pygolang + tests
 }
 
 bool has_prefix(const string &s, char prefix) {

wcfs/internal/wcfs_watchlink.cpp

@@ -117,6 +117,7 @@ error _WatchLink::_serveRX(context::Context ctx) {    // XXX error -> where ?
 
     // when finishing - wakeup everyone waiting for rx
     defer([&]() {
+        printf("serveRX: close all chans\n");
         wlink._acceptq.close();
         wlink._rxmu.lock();
         wlink._rxdown = true;   // don't allow new rxtab registers
@@ -135,7 +136,7 @@ error _WatchLink::_serveRX(context::Context ctx) {    // XXX error -> where ?
         // NOTE: .close() makes sure .f.read*() will wake up
         //printf("serveRX -> readline ...\n");
         tie(l, err) = wlink._readline();    // XXX +maxlen
-        //printf("    readline -> woken up; l='%s'  ; err='%s'\n", l.c_str(), v(err));
+        printf("    readline -> woken up; l='%s'  ; err='%s'\n", l.c_str(), v(err));
         if (err == io::EOF_) {  // peer closed its tx
             // XXX what happens on other errors?
             wlink._rx_eof.close();
@@ -317,19 +318,25 @@ error _WatchLink::recvReq(context::Context ctx, PinReq *prx) {
     if (!ok)
         return io::EOF_;
 
-    pkt.to_string();
+    //pkt.to_string();
     return _parsePinReq(prx, &pkt);
 }
 
 // _parsePinReq parses message into PinReq according to wcfs invalidation protocol.
 static error _parsePinReq(PinReq *pin, const rxPkt *pkt) {
     // XXX err ctx "bad pin"
+    printf("parse pinreq: stream=%lu msg='%s'\n", pkt->stream, &pkt->data[0]);
     pin->stream = pkt->stream;
-    auto msg = pkt->to_string();
+    string msg = pkt->to_string();
+    printf("'%s'\n", msg.c_str());
+    printf("has_prefix: %i\n", strings::has_prefix(msg, "pin "));
 
     // pin <foid>) #<blk> @<at>
-    if (!strings::has_prefix(msg, "pin "))
+    if (!strings::has_prefix(msg, "pin ")) {
+        printf("\n\n\nnot a pin request: '%s'\n", msg.c_str()); // XXX temp
+        abort();
         return fmt::errorf("not a pin request: '%s'", msg.c_str());    // XXX msg -> errctx ?
+    }
 
     auto argv = strings::split(msg.substr(4), ' ');
     if (argv.size() != 3)