Dnsmasq webmin error bad header

dnsmasq webmin error bad header

2020-09-24 https://stackoverflow.com/questions/146657/c-header-file-loops .com/questions/3364816/django-model-retrieval-gives-wrong-type-error. address-unreachable bad-header beyond-scope communication-prohibited no-route packet-too-big parameter-problem port-unreachable. com/questions/993003/windows-cannot-access-share-with-0x800704cf-error -following-multiple-files-capturing-empty-data-despite-showing-file-header. dnsmasq webmin error bad header LISTEN\n";-} elsif ( lc $ARGV[0] eq "add" ) {- die "Usage: $0 ADD USER PASS HOSTNAME\n" unless @ARGV == 4;- add_acct($ARGV[1], $ARGV[2], $ARGV[3]);-} elsif ( lc $ARGV[0] eq "del" ) {- die "Usage: $0 DEL USER\n" unless @ARGV == 2;- print "Are you sure you want to delete user \"$ARGV[1]\"? [N/y] ";- my $resp = <STDIN>;- chomp $resp;- if ( lc substr($resp,0,1) eq "y" ) {- del_acct($ARGV[1]);- }-} elsif ( lc $ARGV[0] eq "listusers" or lc $ARGV[0] eq "writehostsfile" ) {- my $X = tie my %h, "DB_File", $accountdb, O_RDWR F_NXDOMAIN, name, NULL, 0, NULL, 0);-+ if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, -+ daemon->local_ttl, NULL,-+ T_LOC, t->class, "t", 16, t->loc))-+ anscount++;-+-+ }-+ }-+ }-+ }-+- if (qclass == C_IN)- {- if (qtype == T_PTR

How to fix cURL 56 recv failure connection reset by peer in CentOS?

Having trouble with cURL 56 recv failure connection reset by peer in the CentOS server?

The error occurs mainly due to failure in receiving network data.

At Bobcares, we often get requests to fix cURL errors as part of our Server Management Services.

Today, let’s get into the details on how our Support Engineers fix this error.


Why does cURL 56 recv failure dnsmasq webmin error bad header reset by peer occurs?

cURL error 56 is a temporary error that happens due to different reasons like, idle server connection, firewall restrictions, whitespace in the URL, etc.

For instance, the error appears as follows.

cURL 56 recv failure connection reset by peer CentOS

Let’s detail how our Support Engineers fix this for our customers.


How we fix this error cURL error?

At Bobcares, we have more than a decade of expertise in managing servers, dnsmasq webmin error bad header, we see many customers facing errors. It happens mainly when fetching package updates, installing new software, etc.

Now, let’s see the major reasons and how our Support Engineers fix this error.


Idle server connection

Recently, dnsmasq webmin error bad header, one of the customers approached us with a cURL error. He was getting the following error while transferring the backup to the remote destination.

So we checked the backup log files and confirmed that the backups have been generated successfully.

On further checking, we found that the server was idle while transferring the backups to the remote destination. However, dnsmasq webmin error bad header, the backups were successfully exported to Google drive.

In addition, to avoid this situation, the tips we follow are:

  • We always upgrade the user’s OS to avoid TCP/IP issues.
  • Also, we use the recent versions of PHP and cURL.
  • Set the Maximum Transmission Unit (MTU) or the size of packets traveling over the network to the default value, 1500 bytes.
  • We ensure that the firewall is not blocking the user’s connection.

Bad repository

Often bad repository URL can also trigger curl 56 errors.

For instance, while trying to install PHP on CentOS7 server one of our customers cpu over voltage error bios the error:

Here, the customer was using an outdated repository and that caused the error. Dnsmasq webmin error bad header, we corrected the repo settings on the server and the package install went on fine.

Similarly, the repository may fail to load due to DNS resolution failures as well. In such scenarios, we make use of the /etc/hosts files to map the repo website vsftpd error 550 access denied the correct IP address.


Whitespace in the URL

Another customer approached us with a similar problem.

On further investigation, we found whitespace in the URL. We then removed whitespace from the URL.

And in the PHP settings, we added the following.

In addition, If whitespace is a valid part of the URL, we use rawurlencode() function in PHP, to store the URL as encoded including whitespace.


[Need assistance in fixing cURL errors? – We can help you.]



In short, cURL 56 recv failure connection reset by peer in CentOS occurs when the server is idle due to running a long process or due to improper usage of URL. Today, we saw how our Support Engineers fixed the error.


Never again lose customers to poor server speed! Let us help you.

Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.


var google_conversion_label = "owonCMyG5nEQ0aD71QM";
$SORT -un`-+ $AWK -F: '/^dnsmasq .* UDP / {print $2}' die "Couldn't opendir /proc: $!\n";- my @dirs = grep(/^\d+$/, readdir(DIR));- closedir(DIR);- foreach my $process (@dirs) {- if ( open(FILE,"</proc/$process/cmdline") ) {- my $cmdline = <FILE>;- close(FILE);- if ( (split(/\0/,$cmdline))[0] =~ /dnsmasq/ ) {- kill(1, $process);- }- }- }- }- return(0);-}diff --git a/contrib/lease-access/README b/contrib/lease-access/README deleted file mode 100755 index fc66bdf.0000000 --- a/contrib/lease-access/README +++ /dev/null @@ -1,20 +0,0 @@ -Hello,--For some specific application I needed to deny access to a MAC address-to a lease. For this reason I modified the dhcp-script behavior and is-called with an extra parameter "access" once a dhcp request or discover-is received. In that case if the exit code of the script is zero,-dnsmasq continues normally, and if non-zero the packet is ignored.--This was not added as a security feature but as a mean to handle-differently some addresses. It is also quite intrusive since it requires-changes in several other subsystems.--It attach the patch in case someone is interested.--regards,[email protected] --git a/contrib/lease-access/lease.access.patch b/contrib/lease-access/lease.access.patch deleted file mode 100755 index ad76e25.0000000 --- a/contrib/lease-access/lease.access.patch +++ /dev/null @@ -1,578 +0,0 @@ -Index: src/dnsmasq.c-===================================================================---- src/dnsmasq.c (revision 696)-+++ src/dnsmasq.c (revision 821)[email protected]@ -59,7 +59,6 @@- static int set_dns_listeners(time_t now, fd_set *set, int *maxfdp);- static void check_dns_listeners(fd_set *set, time_t now);- static void sig_handler(int sig);--static void async_event(int pipe, time_t now);- static void fatal_event(struct event_desc *ev);- static void poll_resolv(void);- [email protected]@ -275,7 +274,7 @@- piperead = pipefd[0];- pipewrite = pipefd[1];- /* prime the pipe to load stuff first time. */-- send_event(pipewrite, EVENT_RELOAD, 0); -+ send_event(pipewrite, EVENT_RELOAD, 0, 0); - - err_pipe[1] = -1;- [email protected]@ -340,7 +339,7 @@- dnsmasq webmin error bad header }- else if (getuid() == 0)- {-- send_event(err_pipe[1], EVENT_PIDFILE, errno);-+ send_event(err_pipe[1], EVENT_PIDFILE, errno, 0);- _exit(0);- }- }[email protected]@ -372,7 +371,7 @@- (setgroups(0, &dummy) == -1


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