https://bz.apache.org/bugzilla/show_bug.cgi?id=58411
Bug ID: 58411
Summary: CoyoteWriter throws StringIndexOutOfBoundsException
when concurrently printing lines
Product: Tomcat 8
Version: 8.0.26
Hardware: All
OS: All
Status: NEW
Severity: major
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: sdav...@gmail.com
I am currently opening multiple InputStreams and attempting to use println send
data through the Servlet's PrintWriter, unfortunately this sends back a
StringIndexOutOfBoundsException: String index out of range: -49
at java.lang.String.getChars(String.java:812)
at org.apache.tomcat.util.buf.CharChunk.append(CharChunk.java:333)
at org.apache.catalina.connector.OuputBuffer.write(OuputBuffer.java:533)
at org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:170)
at org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:180)
at org.apache.catalina.connector.CoyoteWriter.print(CoyoteWriter.java:238)
at org.apache.catalina.connector.CoyoteWriter.println(CoyoteWriter.java:305)
Using PrintWriter's printf or format methods work properly since the
CoyoteWriter doesn't override those methods and the appropriate synchronized
blocks are enforced, unlike the print overrides which specifically removed the
synchronized blocks. I would suggest removing the unnecessary overrides, it
looks like the PrintWriter handles everything the CoyoteWriter is doing. I
checked the history on the 8.x branch for the file and there isn't a reason why
the class was ever needed in the first place.
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