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authorVadim Troshchinskiy <vtroshchinskiy@qindel.com>2015-06-16 23:02:05 +0200
committerMihai Moldovan <ionic@ionic.de>2015-06-16 23:02:05 +0200
commit371348148b9bedbb5eb0a401c1ff54a75adc9907 (patch)
tree8cca142f29d5d0200e716155dfe748a12db5d327 /debian/patches
parent16df117e563e53a77410b7fd0719c2014eef6a16 (diff)
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nxcomp: fix "negotiation in stage 10" error.
Problem fixed by adding a select() call to implement a timeout, and retrying writes if needed. v2: backport to nx-libs 3.5.0.x (Mihai Moldovan) Adds: - 0660_nxcomp_fix-negotiation-in-stage-10-error.full+lite.patch
Diffstat (limited to 'debian/patches')
-rw-r--r--debian/patches/0660_nxcomp_fix-negotiation-in-stage-10-error.full+lite.patch67
-rw-r--r--debian/patches/series1
2 files changed, 68 insertions, 0 deletions
diff --git a/debian/patches/0660_nxcomp_fix-negotiation-in-stage-10-error.full+lite.patch b/debian/patches/0660_nxcomp_fix-negotiation-in-stage-10-error.full+lite.patch
new file mode 100644
index 000000000..3d4c584fb
--- /dev/null
+++ b/debian/patches/0660_nxcomp_fix-negotiation-in-stage-10-error.full+lite.patch
@@ -0,0 +1,67 @@
+commit f982cbc85e9ffff24a6a348c3637b54a7e8cbc34
+Author: Vadim Troshchinskiy <vtroshchinskiy@qindel.com>
+Date: Wed May 20 15:47:45 2015 +0200
+
+Fix negotiation in stage 10 error
+
+Problem fixed by adding a select() call to implement a timeout,
+and retrying writes if needed.
+
+v2: backport to nx-libs 3.5.0.x (Mihai Moldovan)
+
+--- a/nxcomp/Loop.cpp
++++ b/nxcomp/Loop.cpp
+@@ -8073,16 +8073,52 @@ int ReadRemoteData(int fd, char *buffer,
+ int WriteLocalData(int fd, const char *buffer, int size)
+ {
+ int position = 0;
++ int ret = 0;
++ fd_set writeSet;
++ struct timeval selectTs = {30, 0};
+
+ while (position < size)
+ {
++
++ // A write to a non-blocking socket may fail with EAGAIN. The problem is
++ // that cache data is done in several writes, and there's no easy way
++ // to handle failure without rewriting a significant amount of code.
++ //
++ // Bailing out of the outer loop would result in restarting the sending
++ // of the entire cache list, which would confuse the other side.
++
++ FD_ZERO(&writeSet);
++ FD_SET(fd, &writeSet);
++
++ ret = select(fd+1, NULL, &writeSet, NULL, &selectTs);
++
++ #ifdef DEBUG
++ *logofs << "Loop: WriteLocalData: select() returned with a code of " << ret << " and remaining timeout of "
++ << selectTs.tv_sec << " sec, " << selectTs.tv_usec << "usec\n" << logofs_flush;
++ #endif
++
++ if ( ret < 0 )
++ {
++ *logofs << "Loop: Error in select() when writing data to FD#" << fd << ": " << strerror(EGET()) << "\n" << logofs_flush;
++
++ if ( EGET() == EINTR )
++ continue;
++
++ return -1;
++ }
++ else if ( ret == 0 )
++ {
++ *logofs << "Loop: Timeout expired in select() when writing data to FD#" << fd << ": " << strerror(EGET()) << "\n" << logofs_flush;
++ return -1;
++ }
++
+ int result = write(fd, buffer + position, size - position);
+
+ getNewTimestamp();
+
+ if (result <= 0)
+ {
+- if (result < 0 && EGET() == EINTR)
++ if (result < 0 && (EGET() == EINTR || EGET() == EAGAIN || EGET() == EWOULDBLOCK))
+ {
+ continue;
+ }
diff --git a/debian/patches/series b/debian/patches/series
index 7e5768f90..b797339a0 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -81,6 +81,7 @@
0630_nx-X11_fix-underlinking-dlopen-dlsym.full.patch
0640_nx-X11_fix-underlinking-libNX_Xcomposite_damage_fixes.full.patch
0650_nxcompshad_link-to-NX_Xext.full.patch
+0660_nxcomp_fix-negotiation-in-stage-10-error.full+lite.patch
0990_fix-DEBUG-and-TEST-builds.full.patch
0991_fix-hr-typos.full+lite.patch
0991_fix-hr-typos.full.patch